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Questions related from Zohaib Khan
As a part of study on the tobacco retail environment, our study participants were reluctant to sign the consent for (Written Informed Consent) but gave a verbal consent to participate int he...
02 June 2020 8,283 0 View
So most universities around the globe have been shutdown in these strange and testing times. Researchers, particularly those from the developing countries face a unique dilemma; Having collected...
24 March 2020 1,480 8 View
I have to recruit a sample of 300 secondary sampling units (elements) from X number of Clusters ( primary sampling units), how do I determine X when my primary sampling frame has 93 clusters. I...
19 June 2018 3,285 5 View
We conducted an age and sex matched case control study (84 cases, 174 controls). The outcome was cancer X and the exposure of interest was Y. Sample size was calculated based on the prevalence of...
18 September 2016 9,404 7 View
I can not, despite trying for the last three hours, a systematic review and/or meta-analysis of observational studies where the the sysnthesized quantitative evidence has been evaluated by the...
04 August 2016 6,992 4 View
There are two large documents, the epi info user manual and the epi informatics guide but i find them a bit lacking when it comes to explaining advanced statistical analysis. I want to analyze...
02 June 2016 7,413 6 View
Hi all, we have a data set with 258 records (84 cases , 174 controls). We did frequency matching for age and sex during the data collection , however data entry did not involve a matched (link)...
10 May 2016 9,960 2 View
Does anyone know of some related text on how and when was smoking "pack-years" established for the first time and anything on the validity of this exposure assessment method/tool? I
06 May 2015 7,946 5 View
I can not seem to find any field(variable type) where I can enable multiple choices to be selected. I understand, I can make a group field and then put in check boxes for all my responses or I...
07 March 2015 6,876 3 View
I am at the data entry stage for my project. The questionnaire for both the cases and controls is similar apart from the details for the condition of interest. I will enter data in Epi Info, what...
19 January 2015 9,458 7 View
Should I submit a supplemental bibliography? I have to include these citations because of the work I am reviewing.
07 March 2014 9,791 6 View
Currently I am doing or at least trying to do a meta-analysis of some analytical studies in the field of smokeless tobacco and cancer, a few papers have given adjusted odds ratios, now when I...
14 November 2013 5,679 1 View
