Hi all
In order to conduct an epidemiological study, I need to do a power calculation where my intervention group has 200 participants and placebo has 100. I found only few papers in this regard (age of population does not entirely match and study setting is also different. My supervisor suggested I use standard deviation units to rather than actual scale of SD for reporting power calculations.
I am a little confused as to what is the right approach on this regard. Please suggest how can I proceed with these calculations.