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Detailed comprehensive answers as per wbuhs exam answers according to park's textbook basically exam oriented answers
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analyse_media
analyse_media
analyse_media
analyse_media
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Finding Sources
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Finding Sources
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Finding Sources
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Finding Sources
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All answers above have been compiled directly from Park's Textbook of Preventive and Social Medicine. Here is a quick guide to what has been covered:
Summary of Questions Answered
Long Answer Questions (15 marks each)
| Q | Topic | Study Design |
|---|---|---|
| Q1 | Obesity prevalence in medical students (3 months) | Cross-Sectional Study |
| Q2/Q5 | 85 diarrhoea cases after community feast | Outbreak Investigation + Case-Control |
| Q3 | 45 diarrhoea cases, 2 deaths, village pop=1500 | Attack Rate (3%) + Sanitation Plan |
| Q4 | Jaundice in children after village fair (fuchka) | Hepatitis A Outbreak Investigation |
| Q6 | Radiation in nuclear workers over 5 years | Prospective Cohort Study |
| Q7 | Obesity as risk factor for knee OA (35-65 yrs) | Case-Control Study + Odds Ratio + Bias |
| Q8 | Rare fatal disease associated with smoking | Case-Control (best for rare disease) |
| Q9 | OCP and breast cancer | Cohort Study + RR |
| Q10 | Screen time vs. mental disorders | Cohort Study |
| Q11 | Definition + Classification of epi studies | Full classification tree |
| Q12 | Compare two drugs for hypertension | RCT (Double-blind) |
| Q13 | Obesity + hypertension, 15-year follow-up | RR = 4.0; AR = 7.5% |
| Q14 | Alcohol + dyslipidemia + nested case-control | Nested Case-Control defined |
Short Notes
- Bias vs. Confounding (NOT synonymous)
- Cohort = gold standard for temporal but bad for rare disease
- RR calculation for silicosis data (RR = 6.0)
- Randomization vs. Blinding (NOT same purpose)
- RR vs. AR (NOT synonymous)
- Incidence preferred over prevalence for causation
- Sentinel surveillance for early outbreak detection
- Population Attributable Risk (PAR)
- Surveillance vs. Monitoring (NOT synonymous)
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