Lecture On Case-Control vs Cohort Studies: Odds Ratio & Relative Risk | Epidemiology | MBBS

In this high-yield epidemiology and biostatistics session, we break down the core differences between Cross-Sectional, Case-Control, and Cohort studies. Designed to help medical students tackle tricky university exam questions and prepare for NEET-PG / USMLE Step 2, this lecture explains how to set up a 2x2 contingency table, define cases and controls, overcome recall bias, and practically calculate the Odds Ratio (OR) and Relative Risk (RR) using real-world clinical examples like smoking and lung cancer. 📌 Lecture Chapters (Click to Jump to a Topic): [00:00] Introduction to Epidemiological Study Types [00:29] Common University Exam Questions on Study Designs [03:39] Overview of Experimental vs Observational Studies [04:43] Cross-Sectional Studies (Prevalence Study) Explained [11:20] The 2x2 Table: Calculating Prevalence & Risk Factors [18:33] Case-Control Studies: Retrospective Analysis & Matching [27:02] How to Calculate the Odds Ratio (AD/BC) [35:00] Advantages & Disadvantages of Case-Control Studies (Recall Bias) [37:07] Cohort Studies: Prospective, Retrospective & Longitudinal [48:10] Challenges in Cohort Studies: Loss to Follow-Up [50:01] Calculating Relative Risk (RR) & Attributable Risk #Epidemiology #CommunityMedicine #Biostatistics #PSM #MBBSLectures #CohortStudy #CaseControl #OddsRatio #NEETPG #USMLE #SantiniketanMedicalCollege #MedicalStudents SANTINIKETAN MEDICAL COLLEGE & HOSPITAL Real Classroom Demonstration/Lecture On: COMMUNITY MEDICINE by Dr. VTK Menon MBBS Batch: (2023-24) Conducted on: 20-06-26