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Nutritional Status - Science topic

Nutritional Status are state of the body in relation to the consumption and utilization of nutrients.
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I am looking for a database with images and related locations of coffee crops and their nutritional status for a study.
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Hi, Professor Elsahookie, thank you for your answer.
I mean nutritional status from the crop in the field, like images of leaves/plants with nitrogen deficiency.
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In checking for child malnutrition in a household, if there is more than one child, some are malnourished while others are not and we want to check the resilience capacity of the household, how do we classify the household, malnourished or not? and this is to check transition from one state to another between years.
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this is an interesting question because obviously it makes more sense to look at the trends for the individual child if it is possible to capture that data. you could juxtapose child nutrition trends against household food security indices to see what shows up. you could create a composite index with the nutritional indicators of all members of the household - but like other composite indices it hides a lot more than it demonstrates. for instance - a child with malnutrition might get mathematically completely hidden by two siblings with normal nutrition.
in one study where we did not have the facility to do anthropometry of individual children we quantified something we termed 'nutritional poverty' based upon consumption of protein which is a major gap in our context. you could think along those lines based on previous understanding of what the main determinants of malnutrition are in your study population.
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Hallo,
I have researched the relationship between food consumption patterns and nutritional status. The result showed that significant relationship between iron intake with nutritional status (BMI). What causes iron intake to be related to nutritional status (BMI)? What is the mechanism? Are there other influencing factors that cause a relationship between iron intake with nutritional status?
Thanks.
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I think this publication may answer your question Nira Delina
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I'm searching For a standard or any others questionnaire for Assessing nutritional status of GDM
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I have data from households, where two types of data were collected:
  • A validated questionnaire (Household Dietary Diversity Score (HDDS)), which gives a score between 0 and 12 for each household.
  • Anthropometric measurements of all children < 5 years old in each household = a measure of nutritional status for the children.
I now wish to perform a regression analysis with HDDS score as independent variable and the anthropometric measurements as dependent variable.
The challenge is: In some households there were more than one child, which results in more observations of nutritional status than households scores, and the observations for the nutritional status are not independent, as some of the children come from the same household.
One way to g about it, is to take a mean of the nutritional status for all children in one household, but I would rather not do this, as children of different ages are difficult to compare regarding nutrition.
So what do I do to make sure I respect the assumption of independent observation in this analysis?
In case it's just not possible to perform a regression on this data, please feel free to suggest another analysis!
Hope there's someone out there who can help.
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You could use linear mixed models with fixed and random effects, which allows handling more than one group and the covariance.
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Please suggest standard questionnaire or format for interview schedule that can be used for conducting clinical assessment of deficiency signs and symptoms in relation to assessment of nutritional status in a rural community.
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Based on personal experiences of both design and daily use to conduct an immediate clinical evaluation of the nutritional and mathematically real status, it is based on the visual reading of the five fundamental colors of nutrition from which, according to the answers of only two questions, it is possible to know deep within the internal biochemistry, the deficiency and opposition of substances linked to the five colors. I am available for experimentation and the predictive heads designed by me, in order to contribute to research and evaluation with Natural Mathematical Medicine. Dr. Luigi Barone Nutritionist
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In the literature we can find research on the relationships: (1) emotional state and disease; (2) nutrition and disease. Can the two factors be considered together?
For example, if a person watches TV while eating - could this be a reason to get sick in the future?
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Yes, we can consider, both together. In a long-term emotional state, like continuous anxiety, stress, etc., individuals tend to overeat or undereat. In Both conditions; overnutrition or undernutrition, the nutritional status of the body suffers which can predispose to metabolic diseases in the future.
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I am working on comparative analysis of food and nutrition ( 6-23 months) security in two different production systems (groups). For the first phase of analysis, food security part, I have taken 182 households from one group and 188 from another group and finally I have conducted data analysis on household food security status. When I come to the second phase of the analysis, i.e. nutritional status of children between 6-23 months, I have found that the number of households who have children between 6 to 23 moths were only 54 in one group( which means 54 out of 188 households) and 172 in another group( which means 172 out 182 households) . So my question here is that , can I proceed with these sample sizes to make comparison between these groups?
N.B 1. I have already collected data
2. I am using ordinal logit( nutritional status and food security status) and Binary logit for some of nutritional status outcomes such as wasting , stunting and underweight.
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Analysis of Variance from Summary Data
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I want to know, is there any association between fish consumption and nutritional status of adolescents; and its related review of literature if any. 
Thanks.
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Child growth is internationally recognized as an important indicator of nutritional status in populations and underweight, wasting, and stunting are the three most common indicators used to measure nutritional imbalance resulting in undernutrition. The percentage stunting in an area reflects the cumulative effects of undernutrition and infections since and even before birth. The percentage of underweight can reflect the percentage of ‘wasting’ indicating acute weight loss, ‘stunting’, or both. Thus, 'underweight' is a composite indicator and may therefore be difficult to interpret. But, scholars argue that wasting is not a preferable indicator of undernutrition in areas with a high prevalence of stunting, because it may underestimate undernutrition. Can this proposition be acceptable?
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why are we needing to chose between the two at all? they mean different things and provide overlapping but not identical sets of information about children and populations. i really do not accept this 'single-focus' way of dealing with public health problems. stunting is stunting and wasting is wasting and both are important in their own right and need to be worked upon in different ways. we need to calmly stick to a comprehensive approach instead of getting into false dichotomies and debates. in my work, wasting is important for individual children and their outcomes, and stunting is important for keeping track of population/community level trends.
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Can anyone have the information regarding the average nutritional status of this cocopeat and vermicompost? I want to know whether the cocopeat has the capacity to stand alone for a crop?
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1.Vermicompost contains 1.25 :1.14 : 1.19 percent NPK, respectively.
2. In Cocopeat 0.41:0.81:1.32 % NPK Respectively.
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I am comparing multiple questionnaires for assessing nutritional status. The comparison is based on ROC analysis and I'm using SPSS.
A questionnaire used for the reference standard has 3 result categories, while other questionnaires are based on point scales without defined categories. So, cut off points are needed.
Till now in my work I was always defining only one cut off point for a specific method, so my question is:
What is the difference in defining, in this case, two cut off points instead of one, is it even possible and if it is, how to define them by using ROC analysis?
Thank you in advance.
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For any help in advanced Data Analysis using , R, SPSS, MATLAB, TABLEAU, etc free feel to contact me at ngangam93@gmail.com
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A researcher wanted to determine the effects of nutritional status on tuberculosis treatment outcomes. There are BMI values and treatment outcome status on the TB register of previous 2 years.
1 What study design is best?
2 What is the dependent variable?
3 What is the biomarker?
4 Which multivariable model is appropriate for these analyses?
5 What are the outcome measures?
6 What assumptions due we need to check?
7 What is the measure of model fitness?
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Thanks James Leigh !
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I am currently undertaking a research pertaining the assessment of nutritional status of school age children  6-11 years, so I need help with more articles..
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the elderly people are often identified as a vulnerable group who appear susceptible to malnutrition and disease. At the moment there are no standards for assessing the nutritional status of the elderly. In adults, body size and nutritional status are calculated using Body Mass Index (BMI is weight divided by height squared). The problem with doing the same for the elderly is that it can be difficult to measure their height because of spinal curvature or osteoporosis...
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Please go through the following PDF attachments.
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I am working on comparative analysis of household food security and nutritional status of coffee growers and what producer households of Ethiopia. Recently, Food and nutrition security is considered as single entity, rather than treating them as separate subjects. However, I couldn't find clear and sufficient sources to refer and work with. Most of researches indicated the title as " food and nutrition security" and yet their analyses came up with " food security" and " nutrition security " separately rather than "food and nutrition security" as combined analyses. I would appreciate if, anyone can help me to in this regard?
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World Recognized Definition of Food Security means that When All people at all time have physical and economic acess to safe, sufficient and nutritious food for their healthy and an active life
Nutritional Security
When all people at all times have physical and economic acess to provision of adequate nutrients for their healthy and an active life
Both these are related to each other as most developed nations are now mitigating nutritional Security since they have achieved food security whereas Developing nations are facing both food security as well as nutritional Security. Owing to it's immense importance it has now been included in SDGs goal 2 addressing Hunger, Food Security and Nutritional security comparatively.
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Document can be Crop diversification and nutrition, Impact of crop diversification on household nutritional status, and etc.
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This question is interesting for me
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Dear all
One of our students is interested to do research on effect of physical exercise on nutritional status and academic performance of sport sciences students. His subjects are university students studying for BSc in Sports sciences. He wanted to follow the students for two semesters. The aim is to see if the dietary intake of the students is inline with their physical activities and academic results... He proposed longitudinal study design but not sure how to calculate sample size. Please advise. Sincerely
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Good afternoon!
It is important to understand how homogeneous the study group is and whether it will identify the links between the types of exercise and dietary characteristics.
If in the studied array it is possible to single out established groups, then it will be sufficient to have 20% in them, selected according to significant criteria. If the array is very diverse in characteristics, then all
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I am interested to study the gut microbiome of children of different nutritional status through metagenomics . I need to know how many subjects I need to enroll per group. Can anyone please help me? Thank you!
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You could do a power calculation, check this paper Power and sample-size estimation for microbiome studies using pairwise distances and PERMANOVA. Bioinformatics. 2015 Aug 1;31(15):2461-8. doi: 10.1093/bioinformatics/btv183. Epub 2015 Mar 29.
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My study 's evaluation change in nutritional status of surgical patient.
I don't know suitable method to assess nutritional status at the time of admission and discharge.
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Simplest and easiest way for nutritional assessment is regular weight management. Professional approach includes: Assessment of body composition and biochemical assessment for various micro-nutrients, proteins and various metabolites also. On the basis of clinical symptoms of anorexia and polyphasia also. 
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I am looking for articles on nutritional status and spirituality, ideally related to elderly persons. If you know of any good articles I would appreciate them.  Thanks.
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Hello Geoffrey,
I cannot give you references but what food one consumes, is said to have a relationship to the state of one´s mind or surface consciousness.  In India they talk of food that is sattvic, ragastic and tamasic.  Sattvic food is said to produce more clarity of mind whereas non vegetarian food is generally considered tamarsic - it produces dullness and is heavy.  Rajastic is more energetic  and can cause imbalances. These days there is an additional problem with food as much of our diet may  be  full of toxins such as pesticides etc if it is not grown organically. Hence people on the spiritual path need to also be aware of this. It would be interesting finding out more about these differences with regards to food intake in elderly people  so I wish you every success in your research. 
Warm regards Tina 
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FCR is calculated by dividing the weight of food consumed by the weight gained by fish in a finite time.  
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 Yes, that term is correct reflects the apparent food conversion rate. can be improved by calculating the real conversion rate by amount of energy lost through waste and put it up from the food consumed and calculated weighted increase achieved relative to the amount of food metabolism
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CND and DRIS models are used for diagnosing nutritional status of the plant. Can we use these models in grains at maturity instead of leaves?
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Yes , you can use it as effective as leaves , since leaves are considered to act as both sink and source for various stages of grains...
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If an individual was suffering from a nutritional deficiency, what would be an adequate length of time following the introduction/re-introduction of such a nutrient to observe a biological difference (e.g 3 months?).
In particular, I am interested in studying/quantifying plasma/serum: Vitamin B12, ferritin, calicum, zinc, DHA.   
Any advice is greatly apprecoated.
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Hans,
Many thanks for your response. Very helpful.
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HD patients
Nutritional and Inflammation Status
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Hello Toh Yoon,
thank you very much for your answer and orientation.Me and my team have already assessed about 3000 MHD, and We're currently trying to study the outcomes for the mortality over one year, so I'll sure be doing a ROC analysis and estimate the best cut-off value for our country's population, as you said.
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I want to assess the nutritional status of PLWs in community settings. I've read a few papers that used BMI as the indicator. Can we use this? Is MUAC measurement appropriate?
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BMI is a good indicator for all time. A physical appearance examination like presence or absence of oedema , presence of goitre is there or not, condition of nails, skin , eye. This gives a good data. It's easy to carry in field. Studies have shown MUAC as a potential indicator even for pregnant women. 
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I'd like to get into contact with researchers who have knowledge about food/meal services for elderly people and nutritional status of elderly people in different countries. Addition: elderly people living in their own homes
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I would like to present our paper research that about Dietary habits and neurological features of Parkinson's disease patients: Implications for practice.We conducted a large case-control study. Consecutive PD patients (N = 600) receiving systematic nutritional care and healthy controls (N = 600) matched (1:1) for age, gender, education, physical activity level and residence were studied using a 66-item food frequency questionnaire. The relationship between dietary habits and the following features of PD were investigated in patients: body weight, energy balance, constipation, and levodopa therapy (dose) and its related motor complications.
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Nutritionist
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Nutritional status is a broad term. A most basic and fundamental component of nutritional status is obesity and body composition. Below is a summary of the commonly used indicators of obesity and adiposity:
1. BMI: As others have pointed out, BMI is an easy-to-obtain and inexpensive indicator of obesity status for nutritional status assessment among adults. Despite its strong correlation with body fat levels, its limitation is well recognized given that it cannot distinguish between fat and fat free mass. Also, at a given BMI, significant gender and racial/ethnic variation exists with respect to body fat or more broadly, body composition. Nonetheless, a rich body of literature have shown that BMI can be used to predict increased risk of chronic disease and mortality. 
2. Waist circumference waist-to-hip ratio: These two measures are also easy-to-measure and inexpensive, which can be used to assess central or abdominal obesity. These two indicators also have good correlation with body fat and disease risk among adults. However, waist and hip circumferences could be difficult to measure and less accurate among individuals with a 35+ (kg/m2) BMI. 
3. Skindfold thickness: The strengths include its convenience, low cost, and portability of the equipment. However, skindfold thickness may not be as accurate and reproducible as other body composition measurements. Also, it is difficult to measure among obese individuals with a BMI of 35 or higher. 
4. Other body composition assessment methods: 
    - Bioelectric impedance (BIA)
    - Underwater weighing (densitometry)
    - Air-displacement plethysmography: BodPod
    - Dual energy X-ray absorptiometry (DEXA or DXA)
    - Imaging techniques: Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI)
For these "relatively advanced" body composition assessment tools, this review article may be helpful regarding their respective strengths and limitations: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2741386/
Notably, it is important to recognize that there is no single "best" indicator of nutritional status in adults. Selection of the indicator(s) to be used in a particular research (or field) setting would depend on the research question, outcomes of interest, cost, feasibility,  subject burden, study population, etc. Hope the information above could be somewhat helpful.
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Elderly people may have worn dental prostheses, or edentulous without any prostheses, or there may be faulty occluding (crushing/incising) units in their mouths. What could be impact of such condition in nutritional status of elderly?
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It is not just assess the nutritional status quantify the nutritional risk.
As you know, the method most used in Europe to detect malnutrition in the elderly is the MNA, but for me it has the disadvantage that the Nutritional Risk detected too late, when the damage from advanced malnutrition can be irreversible in the elderly, as with all nutritional screening systems based on anamnestic and anthropometric parameters.
For persons under medical surveillance with routine analytical tests or to assess the CLINICAL RISK of the elderly who consult us for any reason, I suggest the use of CONUT method, based on monitoring three analytical parameters commonly used in the clinic. It is as simple, efficient and reliable.
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I need a self-administered, validated questionnairre for assessing physical activity for children below 15 years of age to look for its relation to nutritional status. The available IPAQ questionnaire is for those above 15 years old and the Canadian Community Health Survey doesn't mention the details of the questionnairre
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Dear Prof Meaad,
There are a few published questionnaires aimed to assess the physical activity level of children and adolescents. However, kindly check through if these questionnaires are valid and applicable to your population.
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India has got its freedom in the year 1947 and we have already passed 68 year. Children are country's future human resources. Their health & nutrition should be in good condition. But recent survey revealed that the state-wide (West Bengal) prevalence of malnutrition was 26.1% & 19.6% in primary & upper-primary students respectively. Another 28.6% & 26.1% of the studied population were `At High Risk’ of developing under-nutrition (3rd to <10th percentile weight & height in respect to age & sex of Indian Academy of Paediatric standard) among primary & upper-primary students. State-wide Ideal Nutritional status was 17% & 23.5% among primary & upper-primary students. Prevalence of anaemia was 29% & 19% among primary & upper-primary students. Other important observations indicated that malnutrition was higher in rural students than their urban counterpart and more in boys than girls. But prevalence of anaemia was higher among girls than boys. Problem of exclusive stunting was 6.9% & 5.7% and that of exclusive under-weight was 6.4% & 4.6% among primary and upper-primary students respectively. Both under-weight and stunting was present in the tune of 12.8% & 9.3% in primary & upper-primary students respectively.
My question is how to improve this situation further as all studied subjects have been receiving receiving school meal programme (freshly prepared cooked meal that is served hot during lunch time)? Does nutrition surveillance at school level will improve the scenario apart from strengthening school meal services including its health components?
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Responding to Ms. Prasad's statement, I do not agree to the statement as Mid day Meal activitiy is going well in many schools with their limited resources. If it is stopped, many under-privileged children will be deprived of one meal, who just come to school for the sake of mid day meal. On holidays, they remain starved or partially fed.
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Hello
One of my students is interested in assessing the nutritional status of school going children in a particular city. How can we calculate sample size for this and what will be the formula?
Thanks.
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please see the attached file. After reading that you will be able to calculate the sample appropriate sample size by keeping in mind error margins.
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Can i use hand grip strength as nutritional status in healthy individual ?
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Dear Arbind:
In my opinion, you can use the handgrip strength as an indicator associated with the nutritional status, considering other factors such as age group, gender, physical activity habitual, as has been done in the United States in the NHANES. Alone is not an indicator of nutritional status.
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Is it possible to estimate the level of food security using nutritional status of children. if it so, how to estimate the same. 
Please share some information.
Thanking you.
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Yes, nutritional indicators would indicate the type of undernutrition in terms of protein- energy malnutrition or specific deficiencies and you can relate that to non-availability or insufficient intake of specific foods. As for example, growth retardation would mean  a food gap itself, vitamin A deficiency would indicate less of green and yellow vegetables and fruits and milk intake. Iron deficiency would mean lower level of ion rich foods, You can find an association between both. 
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I would like to draw the vector graphic according to the metodology descrited by Haase and Rose, 1995 (Vector analysis and its use for interpreting plant nutrient shifts...). Thanks.
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Thanks  Giridhar kalidasu for you advice...
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Dear all:
Based on your experience, what do you think are the most reliable indicators of nutritional status in birds?
I would like to measure them in both adults and nestlings of seabirds.
Many thanks and best regards
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In addition, body weight and measurements of growth (e.g., remiges, tarsus, bill length, etc.) up to a certain age (growth stops at certain ages depending on the species of study) can function as indications of nutritional status in nestlings. See the link below to papers with Tree Swallow nestlings and petrel nestlings as examples.
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I am looking for literature on nutritional status of adult specially focusing on daily laborers. I want to use these literature discussion part of my current study done on nutritional status of daily laborers. I was trying to look on google scholar and pubmed but I am not satisfied with search results. Any recommendation?
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I suggest you to open science direct website, then find out what topic of article you need by entering keywords. I think many articles with good impact you will find. OR you may search based on the references of this article link:
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The phenol concentration is too high for the modified Lowry assay (for proteins) to be reliable. I've found that in most methods phenol in some way interferes in one of the reactions and selectively removing the phenol (or the proteins) seems like a tricky task as well.
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Refractive index can be a good parameter for protein and carbohydrate concentration measurements.
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Hi, I am confused with the assumption of linearity to the logit for continuous predictor variables in logistic regression analysis. Do we need to check for the linear relationship while screening for potential predictors using univariable logistic regression analysis? 
In my case, I am using the multiple logistic regression analysis to identify factors associated with nutritional status (dichotomous outcome) among the participants. The continuous variables including age, Charlson comorbidity score, Barthel Index score, hand grip strength, GDS score, BMI etc. My first step is to screen for significant variables using simple logistic regression. Do I need to check for the linearity assumption during simple logistic regression analyses for each continuous variables? Or should I just check for it in the final multiple logistic regression model?
Besides, from my understanding, we need to log transform the non-linear continuous variable before enter it into the model. Can I categorize the non-linear continuous variable instead of transformation? 
Thanks!
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Several things
1 the use of the log odds - the logit - is already non-linear and this may be enough to capture the underlying non-linearity
2 to asses this you can fit a Generalized Additive Model where the output is a picture of the possibly non-linear relation as a graph and a test of whether it is linear - see the two papers below - this procedure is deliberately exploratory and fits an underlying smooth to the data
The Gam logit model is implemented in R ; in SAS and in Stata  and that is just the software that I know of.
3 while it is useful to model the data at the start one predictor at a time, you have to be careful as apparent relationships may disappear when you take account of other variables  ; or indeed new relationships might appear (that is they have been suppressed) - particular problems may arise if the predictors are highly related ; ie collinear. The best advice is to include predictors on the basis of strong theory and not just by trial and error.
 4 You can break the predictor down into say quartile groups and this can be useful for uncovering non-linearities but it is inefficient if the underlying relationship is linear and consumes degrees of freedom
5 you could also try a low-order polynomial (say age and age-squared) to capture the basic shape of the non-linearity but this imposes a far more rigid curve than the GAM approach   
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Nutrition is a indicator of poverty as it comes under the dimension of poverty i.e  'health'. How  nutritional status of a particular community or a particular respondent can be calculated? What will be the criteria or on what basis we will do survey.
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Dear Aparna,
first of all: a holistic assessment of nutritional status is a complex topic.
The nutritional status depends on recommended energy intake (in the narrower sense of a well-balanced energy status), macronutrient and micronutrient intakes and liquid intake.
The quantification of energy intake per capita as well as the protein and carbohydrate intakes per capita could be first marker of nutritional status.
Associated with micronutrient intake is carbohydrate quality (i.e. whole grain products).
For micronutrient assessment: nutrient density (micronutrient amount in mg / 100 kcal or kJ) is a valuable marker.
Further criteria are food supply and food security and related markers.
Also good socio-economic status and education are correlated with all-balanced nutritional status. 
There are several possibilities to assess the nutritional status of a community.
1. aggregate data from national or international databases in terms of food supply (i.e. FAO, FAOSTAT)
2. publications or data about prevalence of malnutrition (= undernutrition, overnutrition)
3. antropometric data like BMI, weight-to-hight (esp.  children)...
4. more labour.intensiv: clinical examinations and bio-chemical testings
5. It exists some "tools" which can be used for malnutrition assessement, ie. Malnutrition Universal Screening Tool (MUST): http://www.bapen.org.uk/pdfs/must/must_full.pdf 
Here you find some helpful sources: 
Remark: Obesity could be both a marker of wealth and poverty...this is to be discussed...
With best regards,
Nicolas Ting
Nutritional Scientist
Cologne, Germany
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Dear all,
     I have studied two populations of school boys (8-16 yrs age). The indices of malnutrition were calculated according to the classification of World Health Organization (WHO, 1995). Results shows that Population 2 has lower stunting values, but higher thinness and overweight values in comparison to population 1.
So, Which population has better nutritional status?
Can anybody answer the cause of this type of prevalence .
Is there any similar publication?
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Dear Sandeep !!!
Greetings from Udaipur !!! Determination of Nutrtional Status is a vast Area to discuss. Nutritional Status in terms of what ??? Under the umbrella of Nutrition there are so many disorders. One population may have high frequency of night blindness and the other may have high frequency of marusmus !!! Another one may have high iodine deficiency and the fourth may have high iron deficiency anemia. How you can compare them in terms of nutritional status. BMI, Height and Weight for age shows different situation of nutritional status. The best way is to tell the actual situation rather than to compare in terms of Nutritional Status. Infact, in a particular area also like BMI , it will show different result in a single population with the application of different indices. New indices are also available like IOTF, WHO 2007. You can have a look into my publication in North American journal of Medical Sciences for that.  The other better way is to use the Composite Index of Malnutrition where you can add thinness, stunting as well as underweight at the same time. Best of luck and regards.   
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Need speedy reply
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@Ignatius Onimawo - Thanks for your contribution Sir. it has helped a lot
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Human beings have adapted well through maintaining dietary habits in mountainous areas but it is also fact that people in such areas especially children have low nutritional status in compare to lowland areas. The changing dietary habits in mountainous areas have either degraded or bettered the nutritional status of these people. The growing food insecurity in such fragile environments is a global concern today. Anybody working is this line may kindly share information.
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You might want to specifically consider Iodine deficiency if you collect data on nutritional habits of people living in mountainous regions. From the Himalayas to the Balkans people suffer from Iodine deficiency disorders especially where the natural pattern includes alternating flood plains and mountains. Iodine deficiency is associated with high prevalence of endemic cretinism, goiter, short stature, and deafness resulting in loss of intellectual capacity.
Even in areas with moderate iodine deficiency (iodine ingestion 20 to 49 μg/day), clinically euthyroid children and adults often have definite abnormalities of psychomotor and intellectual development.
Delange F, Bürgi H, Chen ZP et al. Thyroid 2002;12:915–24
Berbel P, Obregón MJ, Bernal J et al. Trends Endocrinol
Metab 2007;18:338–43
Modern Nutrition 11th ed. Chapter 95
Hope that helps
IG
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Organic fertilization: source of macro and micronutrients considered essential for plants and also other nutrients and organic substances.
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The internal needs and nutrient balance of the plants are not supposed to depend on the agricultural system we use or on the origin of the nutrientes (already in mineral form, mineralised, directely absorved or with the intervention of microorganisms). So, and considering most of the remarques already done, my opinion is yes, you can leaf analysys as a diagnostic tool to assess the nutritional  status of plants cultivated in organic farming systems.
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To estimate the nutritional condition of fish and invertebrate larvae, biochemical methods are widely used. One of the most important is the RNA/DNA ratio. Since the quantity of DNA remains constant in the cells regardless the condition of the individual, but RNA levels are associated to metabolic activity, this ratio provides an accurate indication of the nutritional status of the individual.
Samples collected for this purpose are generally frozen or kept in RNAlater, which avoids any RNAse activity. However, often samples are collected with other purposes and kept, for example, in ethanol. Would it be feasible to use these samples for this type of analysis?
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Hi David,
I am afraid that 70% ethanol might not be sufficient to inhibit RNA degradation. The two methods that are commonly used in my lab are snap freeze in liquid nitrogen followed by storage in a -80 freezer or sampling a little piece of tissue immediately after euthanasia then store in RNAlater.
Maybe this paper will help you as it provides a discussion on how good ethanol is at preserving nucleic acids.
good luck with your project!
Tullio
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In this study, the results showed an association between nutritional status with intelligence by using the correlation test. But it was not clearly stated in the abstract if the nutritional statuses, which were used in the analysis of correlation with intelligence, were by height for age or weight for age.
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Lesley Haynes no longer practises as a Registered Dietitian and is now retired.
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Eclamsia is a major cause of maternal mortality, morbidity and adverse fetal and neonatal outcome. There are research attempts to investigate the factors associated with eclamsia; but is there any recent finding that suggests the association of eclamsia with specific nutrient deficiency in developing countries.
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Yes interesting we are investigating the topic where severe anemia is associated with  preeclampsia.   Furthermore calcium Vit D, Zinc  deficiency  were found to  be associated with  preeclampsia.  Perhaps through  antioxidant effect,
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Why is fighting hidden hunger important?
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Agree with Ali and Namukolo
At WHO data base  there is a data on  minerals and vitamins and their assessment methodds  
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I am working on some topics related to nutritional status in children and poverty, but I cannot understand the ideas of " stunting, overweight" etc. Would anybody like to explain and provide the standard formulas to calculate them?
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The reference that Eliz suggested will be useful for sure. If you go to the WHO website you can search WHO anthro and this is software that you can use to calculate z scores used to determine the different forms of malnutrition.
The fact is that poor nutrition affects child growth and that chronic malnutrition can lead to retarded linear growth leading to infants and young children being of shorter stature than standard expectations. This is stunting! However the stunting does not only affect linear growth but also development in general including brain and cognitive develoment with long term effects on educational outcomes. The link between educational outcomes and malnutrition in developing countires makes poverty difficult to combat with further impact on economic development. Besides being caused by chronic malnutrition stunting can also be caused by what is termed hidden hunger which refers to micronutrient deficiencies resulting from low nutrient  density diets. This is why there is so much emphasis on micronutrients currently in nutrition globally.
Overweight on the other hand is usually as a result of dietary energy intake in excess of requirments leading to a Body mass index higher than 25Kg/m2 for children older than 9 years and adults. This situation can further lead to obesity. For infants and young children up to 9 years Weigh-for-height z scores above +2 SD. This puts the child at risk of developing noncommunicable diseases like diabetes and others and puts the child at risk of the same later in adulthood also with impact on health.
I hope this quick summary will help you.
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Diet diaries and food frequency questionnaires are time consuming.
What alternative methods exist as alternative to 24 hours recall and diet diaries to assess the dietary patterns in epidemiological studies?
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Send out short surveys.