Rajan Sharma

Rajan Sharma
Macquarie University

About

13
Publications
137,080
Reads
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366
Citations
Additional affiliations
July 2014 - December 2014
University of Southern Denmark
Position
  • Research Assistant
February 2011 - August 2012
IRHDTC
Position
  • District coordinator

Publications

Publications (13)
Article
Objectives Prostate-specific membrane antigen (PSMA) positron emission tomography/computed tomography (PET/CT) has emerged as a promising imaging tool in prostate cancer diagnosis. PSMA PET/CT radiotracers are produced in-house (gallium-68, eg, ⁶⁸Ga-PSMA-11) or provided by commercial entities (fluorine-18, eg, ¹⁸F-DCFPyL). Nevertheless, the cost pe...
Article
Full-text available
Non‐preference‐based patient‐reported outcome measures (PROMs) are popular in health outcomes research. These measures, however, cannot be used to estimate health state utilities, limiting their usefulness for economic evaluations. Mapping PROMs to a multi‐attribute utility instrument is one solution. While mapping is commonly conducted using econo...
Article
Full-text available
Background and objectives: Prostate-specific membrane antigen (PSMA) positron emission tomography (PET) combined with computed tomography (CT) is a new imaging modality to detect the extra-prostatic spread of prostate cancer. PSMA PET/CT has a higher sensitivity and specificity than conventional imaging (CT ± whole body bone scan [WBBS]). This stu...
Article
Objectives: Hearing loss is one of the most prevalent congenital disorders among children. Many countries have implemented universal newborn hearing screening (UNHS) for the early diagnosis and treatment of hearing loss. Despite widespread implementation, the value for money of UNHS is unclear due to lack of cost and outcomes data from rigorous st...
Article
Full-text available
Importance Female community health volunteers (FCHVs) are frontline community health workers who have been a valuable resource in improving public health outcomes in Nepal, but their value is understudied in diabetes care. Objective To assess whether an FCHV-delivered intervention is associated with reduced blood glucose levels among adults with t...
Article
Full-text available
Importance Congenital cytomegalovirus infection (cCMVi) is one of the most common infections associated with childhood hearing loss. Prevention and mitigation of cCMVi-related hearing loss will require an increase in newborn screening, which is not yet available in China. Objective To estimate the cost-effectiveness of newborn screening strategies...
Article
Full-text available
Purpose Non-preference-based measures cannot be used to directly obtain utilities but can be converted to preference-based measures through mapping. The only mapping algorithm for estimating Child Health Utility-9D (CHU9D) utilities from Strengths and Difficulties Questionnaire (SDQ) responses has limitations. This study aimed to develop a more acc...
Article
Background Permanent childhood hearing loss is one of the most common birth conditions associated with speech and language delay. A hearing screening can result in early detection and intervention for hearing loss. Objectives To update and expand previous systematic reviews of economic evaluations of childhood hearing screening strategies, and exp...
Article
Full-text available
**Objective:** General practitioners (GPs) play an important role in caring for people with Alzheimer’s disease (AD). However, the cost and the extent of service utilization from GPs due to AD patients are difficult to assess. This study aimed to explore the principles of propensity score matching (PSM) technique to assess the additional GP service...
Article
Full-text available
Background: Understanding the prevalence of type 2 diabetes in Nepal can help in planning for health services and recognising risk factors. This review aims to systematically identify and collate studies describing the prevalence of type 2 diabetes, to summarise the findings, and to explore selected factors that may influence prevalence estimates....
Article
Full-text available
Hypertension is a leading attributable risk factor for mortality in South Asia. However, a systematic review on prevalence and risk factors for hypertension in the region of the South Asian Association for Regional Cooperation (SAARC) has not carried out before. The study was conducted according to the Meta-Analysis of Observational Studies in Epid...
Article
Full-text available
Background: This study was carried out to estimate the prevalence of intestinal parasites among school-going children of the Baglung municipality from December 2010 to January 2011. Objective: To find out prevalence of parasitosis among school aged children and to make necessary recommendations for preventive measures. Method: A total of 260 s...
Article
Full-text available
The purpose of this study was to analyze the distribution of chronic obstructive pulmonary disease (COPD) in terms of time, place, and person among inpatients at the Mid Western Regional Hospital (MWRH) in Nepal. A descriptive cross-sectional study was carried out by analyzing trends using secondary data for the fiscal years 2006-2009 in the inpati...

Questions

Questions (18)
Question
Hi guys,
Instead of doing tedious job of writing up all conditions, I am trying a simple STATA loop such that a 'replace' command works if all variables satisfy an assigned criteria. My loop does work as such the replacement happens if any one of the variables fulfill a given condition. Any idea regarding this? My loop looks something like this:
gen xyz=.
forvalues i=0/10{
foreach v of varlist X1-X100{
replace xyz=1 if `v'[`i']>=5&`v'[`i']<=7&`v'<.
}
}
Thanks in advance.
Question
I have this little (bizarre) problem. Having created a R markdown file and connecting it to scheduler via batch file, I want the output file to be named along with the date in which the batch runs..eg. xx.2016-03-03.html. 
The problem arises when attaching file in email system created using  mailR package. Manually, I could simply change the name of the file (for example: attach.files="C:/cc/xyz/xx.2016-03-16.html") which is not something I want. I want the above statement to happen through command and not manually.
Is there a way to solve this problem?
Regards,
Rajan
Question
Hi all, I have created html slides from Rstudio presentation (.Rpres file) after combining R with Mysql. Now I want to automate the whole process such that .html output can be sent daily to desired emails. I think I can schedule the file through windows scheduler but I need some input with Rscript/batch file. Does somebody have experience of creating Rscript.exe (batch) file such that it captures .html output and email function to email that output?
Thank you in advance.
Regards
Question
Hi everyone,
I have tried to collapse multiple rows per id in terms of the maximum values. I can do it using dplyr command:
data<-tbl_df(data) %>%
group_by(id) %>%
summarise_each(funs(max(., na.rm = TRUE)))
However, for a large data, it is little too slow. I tried the following using data.table but it produces wrong result:
data<-setDT(data)[, lapply(.SD, max,na.rm=TRUE), by=id]
I shall be grateful for suggestions.
Regards,
Rajan
Question
I have large data tables in MySQL and is connected to R. I am using sqldf package in R to read tables from SQL and combining required tables to obtain the final table to carry out further analyses. But this is not very efficient as it occupies memory in R as well as it takes long time to extract big tables.
Is there a package or something in R that will help me work by directly referencing to tables in MySQL without having to read them first in R?
Thanks!
Question
Hi friends, I have to find possible matches in a large database for a small number of cases (on the basis of many variables).  There are many missing values in the variables which make it unfit for matching (I am doing this using 'matchit' package in R). That's why I did imputation first and did matching after that but I have doubts surrounding this. My question is: Is imputation the best way to address missing values before matching? Is there a matching technique that ignores the missing values and matches irrespective of whether there are missing values or not? (R and/or STATA)
Question
Hi friends,
I am working in a reproducible presentation in R where I've to show some numbers in the form of a flow chart. I tried some packages like DiagrammeR but they give error messages when I put in the R chunk.
Is there any other way?

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