Qiang Li

Xi'an Jiaotong University, Xi’an, Shaanxi Sheng, China

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Publications (7)0 Total impact

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    ABSTRACT: To understand the growth and malnutrition status of Tibetan children aged 0 to 35 months in rural Lhasa in 2010. Cross-sectional study and multistage sampling design were used to randomly select sampling units. A total of 640 children were studied. Height and weight were measured and nutritional status was evaluated with WHO reference in 2006 using Z-scores. Z-scores of weight-for-age (WAZ), Z-scores of height-for-age (HAZ) and Z-scores of weight-for-height (WHZ) were analyzed. At the age of 18 - 35 months, the children in rural Lhasa were 3.0 cm shorter as compared to the China national length reference. At the age of 6 - 11, 12 - 17 months, weight ((8.84 ± 1.23) and (10.20 ± 1.08) kg) and length ((70.45 ± 4.46) and (76.73 ± 4.78) cm) of boys were significantly higher than girls (weight: (8.42 ± 1.30) and (9.59 ± 1.26) kg; length: (67.61 ± 3.98) and (74.25 ± 4.50) cm) (all P values < 0.05). WAZ and HAZ were -0.17 ± 1.11 and -1.11 ± 1.46, respectively. The HAZ of 18 - 23 months children (-1.51 ± 1.24) was significantly different from the HAZ of 0 - 5, 6 - 11, 12 - 17 months children (HAZ: -0.75 ± 1.50, -0.83 ± 1.72, -1.07 ± 1.55, respectively) (all P values < 0.05), comparison with the HAZ of 24 - 29, 30 - 35 months children (HAZ: -1.41 ± 1.25, -1.24 ± 1.05), the results showed that there were no significant difference (all P values > 0.05), HAZ of 18 - 23 months children was the lowest. The prevalence of stunting, underweight, and wasting were 24.6% (155/630), 5.4% (33/616) and 1.0% (6/608), respectively. The malnutrition of boys was more serious than that of girls, the stunting of 18 - 23 and 24 - 29 months children had reached 35.0% (36/103) and 29.1% (25/86), respectively. The growth and development status of children in rural Lhasa under 3 years old was poor, and the malnutrition of local children should not be ignored with variations by gender and months of age.
    Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] 10/2012; 46(10):932-6.
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    ABSTRACT: To examine the relationship between cigarette smoking and body mass index (BMI) as well as waist circumference (WC) of men from 9 rural districts of Hanzhong, Shaanxi province. Cross-sectional data was analyzed from Hanzhong Health Survey on rural residents in 2010. Quantile regression mode was used to compare the results using the BMI (WC) and smoking status (degree) as the dependent variables and independent variable and confounding factors were also controlled. 1039 rmale residents of rural areas of Hanzhong city were investigated. The prevalence rates on overweight and obesity among the males were 28.0% and 5.9%, with central obesity as 35.0% and the rate of current cigarette smoking was 63.6% in the areas. from the quantile regression showed that the relationship between smoking status and BMI beyond 80 percentile in men (BMI = 24.4) which was not significantly different BMI among the heavy smokers, was much higher than those mild smokers beyond 90 percentile (BMI = 24.9). WC of the current smokers was significantly higher than those ex-smokers beyond the 95 percentile (WC = 96.7 cm). WCs of the moderate and heavy smokers had an increase along with the increase of WCs beyond the 85 percentiles (WC = 89.9 cm). The effect of smoking status and BMI (WC) were inconsistent, however, with BMI and WC increased among the subjects whose BMI or WC were at the high extreme end of the distribution. Thus, we should advise the obese subjects to quit smoking.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 09/2012; 33(9):907-11.
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    ABSTRACT: The objective of this study was to investigate the prevalence rate of abdominal obesity and to explore the associated risk factors in rural communities from Hanzhong area, Shaanxi province, and to provide baseline data for further targeted intervention programs. A cross-sectional study was conducted among all the participants with questionnaires, interview and physical examination. Nine townships were selected in Hanzhong area, followed by one village randomly chosen from the selected township, using the stratified random sampling method. There were 3030 participants in this survey, among which 3021 samples were valid, including 1048 males and 1973 females. The overall prevalence rate of abdominal obesity was 38.9% (standardized rate as 33.4%) in rural communities of Hanzhong, and the prevalence rate on males abdominal obesity (35.0%) was significantly lower than that of females (40.9%). It was found that following factors as: being male, married, having more household wealth, frequent consumption of fried food, non-engagement of agricultural labor work, being nonsmoker or ex-smoker, spending longer time on watching-TV etc. were positively associated with the bigger odds of having abdominal obesity when using the logistic regression analysis. Meanwhile, data from this study indicated that factors as: at younger age, frequent participation in agricultural labor, under artificial feeding, with more years of education, less frequency of pregnancy etc. were negatively related to the prevalence of female abdominal obesity. The prevalence rate of abdominal obesity in Hanzhong area, Shaanxi province was significantly higher than the national average level which called for the development of related intervention programs to prevent chronic diseases associated with gender related-obesity in Hanzhong.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 04/2012; 33(4):356-9.
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    ABSTRACT: To investigate the relationship between dietary patterns and hypertension in Hanzhong city of Shaanxi province. A cross-sectional survey on dietary pattern and hypertension together with a semi-quantitative food frequency questionnaire was conducted among rural residents aged from 18 to 80 in Hanzhong of Shaanxi province in 2010. Factor analysis by SPSS was used to identify food patterns based on the frequency of food. Logistic regression was used to analyze the relationship between dietary patterns and hypertension. 2929 rural residents were investigated with an average age as 50.0 years old and average schooling-years as 6.8. The prevalence rate of hypertension was 34.3%, with 35.4% in males and 33.7% in females. Among 29 kinds of food under investigation, only 11 kinds with the frequencies of consumption more than 1 time per week. Four main factors were derived as four dietary patterns by factor analysis and they were diversity dietary pattern, alcohol dietary pattern, beverage dietary pattern and simple dietary pattern. Among them, the balanced dietary pattern was significantly associated with hypertension. All the participants were categorized into 4 groups (Q1-Q4) according to their factor scores, quartile with Q1 as a reference. The residents who were more closer to having balance dietary pattern, were under less risk of suffering from hypertension after controlling for age, sex, BMI, education and income. Compared to Q1, the Q4 had lower risk of hypertension (OR = 0.59, 95%CI: 0.44 - 0.77) for the balanced pattern. Dietary pattern could be related to the prevalence of hypertension. A rational diet with diversity of foods should be suggested as one of the major measures for the prevention of hypertension.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 01/2012; 33(1):37-41.
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    ABSTRACT: The study was to describe the breastfeeding status of children under the age of three in counties of western China and to provide evidence to the government for decision-making on intervention. A cross-sectional study with probability-proportional-to-size (PPS) sampling method was used. The information on breastfeeding was obtained through memory of the mothers. Fourteen thousand and seventy-seven children were studied. Data on breastfed status in counties of western China was compared with those of the children from the survey of the counties of western China in 2001. The breastfeeding rate of children under 3 years old in western China was 96.5%. However, the overall breastfed rate of children under 6 months were only 33.4%, with rates of 11.4% and 22.0% on exclusively and predominantly breastfed groups respectively. Timely first-suckling rate was 43.5% with the continued breastfeeding rate (1 year) as 64.9%, but the continued breastfeeding rate (2 year) was only 9.7%. Reasons causing mothers to wean would include according to her own intention and to be able to attend the physical labor while exclusive breastfeeding under 6 months was for the growth and development of children, which might reduce the two-week prevalence of diarrhea. Major risks of exclusive breastfeeding of children under 6 months were seen as: level of education of the mothers, economic depression of the counties and mother's nationality (if as minority). Most of the children were ever or being breastfed at the time of interview with timely first-suckling took place earlier than in 2001. However continued breastfeeding did not last long. During these five years, the exclusive breastfeeding rate had been at low level, especially at the economic depression and the minority area.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 03/2007; 28(2):109-14.
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    ABSTRACT: To understand the current situation of maternal health care and the association between maternal health care and relevant factors. According to a cross sectional study design, 1512 mothers having children under 3 years old were drawn under stratified random sampling method and interviewed at their households in 15 counties, Tibet Autonomous Region of China. 77.6% of the pregnant women received at least one antenatal checkup with an average of 3.89 times while the rate of antenatal checkup over 5 times was 26.3%. The hospital delivery rate was 40.4% in this area. 83.9% of the women received education under the health care program during pregnancy and 66.2% of them were visited by health workers after delivery. Major factors of the antenatal checkups would include the resource of income, living in nomadic area, personal sanitation, antenatal health care education, mobilization of delivery at hospital, knowledge of antenatal health care etc. There had been great improvement in women's health care in this area as compared with the status in 1999, but the frequency of receiving antenatal checkup was still not enough and the rate of hospital delivery was also low as compared with 46 counties in western areas of China. Poor knowledge of health care during pregnancy seemed to be the major factor that limited the utilization of antenatal health care. Knowledge on health and common sense of health care should be disseminated to improve the antenatal care and to enhance the hospital delivery rate.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 02/2006; 27(1):9-11.
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    ABSTRACT: To assess nutritional status among children younger than 3 years in 40 counties of western China, using anthropometry. With cross-sectional study and random sampling, a survey with a sample size of 7252 was conducted in 40 counties of western China on children under 3 years old. Height and weight were measured and nutrition status was evaluated with WHO/NCHS reference using Z scores. SD of height for age (HA) and weight for age (WA) were 1.10 - 1.30 and 1.06 - 1.40, respectively and SD of WAZ for infants varied. The distribution of HA Z and WAZ shifted downward to 1 unit and 0.4 unit for distribution of weight for height (WHZ). The prevalence of stunting, underweight and wasting were 23.0%, 22.6% and 7.5% respectively. The prevalence rates were low among those yourger than 3 months. Stunting and underweight increased sharply after 6 months and reached 20% - 30%. Significant correlation was found between underweight and stunting or wasting with coefficients of 0.815 and 0.636, respectively. No correlation was found between stunting and wasting. The nutrition status adversely affected children as a whole but not only for individuals. There was a higher prevalence of malnutrition mainly on low height to children. Weight for age must be interpreted cautiously because of the inability of this indicator in distinguishing stunting and wasting just by itself. Assessment by anthropometry called for accurate information on age and measurement of height and weight.
    Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi 04/2005; 26(3):177-81.