sample size

[usr]

hello

in a drug trial, what is the n? the number of the subjects that took the drug, or all the subjects included the ones in the placebo group?

thanks

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[usr]

anyone???

 

[PhDMD]

"n" depends on the structure of the clinical trial, how many arms there are in the trial, etc. You would need to be more specific with your question.

 

[usr]

let's say two arms, one of placebo and another one of the drug that is examined in that trial