David S Bennett

4 Questions 11 Answers 0 Followers

Questions related from David S Bennett

How to calculate effect sizes from multiple odds ratios for a single exposure variable for a meta-analysis?

For a meta-analysis, I'm including some studies that report the exposure variable in hours as categorical variables (e.g., "1 to 60 mins"; "61 mins to 120 mins"; "121 mins to 180 mins", etc.),...

20 April 2023 6,079 2 View

SPSS - Merging files by ID numbers that contain letters?

Hi, I'm trying to merge files from a data base of 20 files, each containing about 4000 subjects. Unfortunately the ID numbers are actually a combination of numbers and letters (e.g., b1458219)....

16 February 2021 6,303 3 View

Examining an outcome longitudinally, if some data points are positively skewed, should the other data points be log transformed as well?

We measured CD4 levels over 12 months, and the levels are skewed at 2 of the 12 data points. In running a longitudinal analysis (e.g., mixed models) with CD4 as the outcome, should I correct for...

15 September 2016 9,265 3 View

Can oxidative stress be assessed via saliva in young children?

And if so, which assay(s) might be best for examining possible effects of chronic stress in children aged 1 to 3 years?

15 January 2013 9,609 2 View