Propensity Score Matching

Propensity score matching is a statistical technique used to reduce bias in studies comparing different groups. When researchers want to understand the effect of a treatment or intervention (like a new drug), they often compare those who received the treatment to those who didn’t. However, these groups may differ in important ways. Propensity score matching involves pairing individuals from both groups with similar characteristics, so the comparisons are fairer. This helps isolate the treatment's effect by ensuring that the groups being compared are more alike, making the results more reliable and credible.