Re: Randomised controlled trials: understanding confounding
Dr. Sedgwick gave four ways of tackling the confounding, viz.:
1. Random allocation
2. Stratifying the random allocation
3. Intention to treat analysis
4. Multiple regressions
Here we would like to add:
1. Strict subject selection criteria: Inclusion and exclusion criteria, where confounders are eliminated or made as selection elligibility criteria
2. Matching for confounders like, same socio-ecnomic status in the two groups, especially in the observational studies.
The above two methods as well will tackle the confounders.
Competing interests: No competing interests