confounding by indication

Question

معنی قسمت مشخص شده؟

confounding by indication may limit the validity of this finding.

Answer 1

اين يك اصطلاح تخصصی پزشکی است و شرحش خیلی مفصله.  در هر حال جمله فوق میگه که وجود این مسئله اعتبار یافته های تحقیق را زیر سوال می بره. 

 

Confounding by indication is a term used when a variable is a risk factor for a disease among nonexposed persons and is associated with the exposure of interest in the population from which the cases derive, without being an intermediate step in the causal pathway between the exposure and the disease. However, in the literature, the term confounding by indication is not always used consistently.