CM7.4 | CM7.4 | Morbidity and Mortality Measures — Summary & Reflection

KEY TAKEAWAYS

Morbidity and mortality measures transform raw counts into comparable, actionable rates. Incidence rate counts new disease events per population at risk per time unit; attack rate and secondary attack rate are outbreak-specific proportions. Point prevalence counts existing cases at a moment in time; period prevalence across an interval. The link prevalence ≈ incidence × mean duration is a fundamental formula. Mortality measures range from the crude death rate (all deaths per population) through cause-specific rates, case fatality rate (deaths / cases × 100), and programme-relevant indicators: IMR (deaths <1 year per 1,000 live births), NMR (0–28 days), U5MR (deaths <5 years per 1,000 live births), and MMR (maternal deaths per 100,000 live births — denominator is live births). Age standardisation (direct or indirect via SMR) is required before comparing crude rates across populations with different age structures. India's key benchmarks: IMR ≈35 (NFHS-5), MMR ≈97 (SRS 2018-20), U5MR ≈32 (NFHS-5).

REFLECT

You are reviewing annual health data for two districts in the same state. District A has an IMR of 30 per 1,000 but a neonatal MR of 26 (neonatal deaths dominate). District B has an IMR of 34 per 1,000 but a neonatal MR of only 10 (post-neonatal deaths dominate). Both districts receive the same health budget. How would you advise the state health department to allocate programme priorities differently between the two districts? In your answer, identify which specific interventions address neonatal vs post-neonatal mortality, drawing on what you have learned about morbidity and mortality measures and their interpretive implications.