This study explores the relationship between gallstones, cholecystectomy, and cancer risk through both observational and Mendelian randomization (MR) methods. The research aims to clarify the ...

Pharmacogenetic testing, which is used to classify how patients with major depressive disorder (MDD) metabolize medications, reduces adverse drug-gene interactions, new research shows. In a randomized ...

The same BMI criteria were used to determine eligibility for study randomization. Any individual who completed the run-in phase but did not fulfill the BMI randomization criteria was considered ...

Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.