How is Medical Therapy Evaluated in Epidemiological Studies?
Epidemiologists utilize various study designs to evaluate the effectiveness and safety of medical therapies. Randomized controlled trials (RCTs) are considered the gold standard for assessing causality. In RCTs, participants are randomly assigned to receive either the treatment or a placebo, ensuring that the observed effects can be attributed to the intervention. Cohort studies and case-control studies are also frequently used, especially when RCTs are not feasible due to ethical or logistical reasons.