Vital Statistics and Indicators
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Direct answer
Vital statistics are the continuous registration and analysis of vital events — births, deaths, marriages, divorces — from which a nation measures its health; health indicators are the summary numbers derived from those statistics and surveys that make population health comparable across place and time. India's data spine runs from the decennial Census (2011 the most recent; 2021 postponed), the Civil Registration System (legal registration, compulsory under the Registration of Births and Deaths Act 1969), the Sample Registration System (dual-record estimation of fertility and mortality), the National Family Health Survey (NFHS-5, 2019-21, the household survey benchmark), disease notification, and the routine HMIS. Indicators divide into mortality, morbidity, disability, nutritional, health-care-delivery, utilisation, social and mental-health families.
What you must remember
- Census: complete enumeration every ten years since 1881; Census 2011 counted 1.21 billion people, density 382 per sq km, sex ratio 943, child sex ratio 919, literacy 74 per cent.- CRS: registration of births and deaths is a legal right and duty under the RBD Act 1969, within 21 days; completeness is imperfect, so SRS supplies the official rates.
- SRS: dual-record system (continuous enumeration plus half-yearly retrospective survey) in sampled units — India's source for IMR 28 (2020) and CDR, NMR and MMR estimates.
- NFHS-5 (2019-21): TFR 2.0, institutional births about 89 per cent, and anthropometric anchors — stunting 35.5, wasting 19.3, underweight 32.1 per cent of under-fives.
- Mortality indicators: crude death rate, life expectancy at birth, IMR, neonatal and perinatal mortality, MMR, child mortality rate, disease-specific and proportional mortality — life expectancy and IMR are the two flagship indicators.
- Fertility indicators: general fertility rate, total fertility rate (India 2.0 per NFHS-5, replacement 2.1), gross and net reproduction rates.
- Other indicator families: morbidity (incidence and prevalence), disability (DALY — Years of Life Lost plus Years Lived with Disability), nutritional (low birth weight, anaemia), health services and utilisation (bed-population and doctor-population ratios, immunisation coverage), and positive health indicators such as DALY-free life expectancy.
Reading one state's dashboard
A district health officer receives three reports on the same year: HMIS shows 92 per cent institutional delivery; NFHS-5 for the state shows 89 per cent; the census-based projection estimates a crude birth rate of 20. Knowing the source design explains every gap. HMIS counts only public and reporting-private facilities, so it inflates among populations that use them and misses those who do not. NFHS interviews a stratified sample of households, capturing private deliveries but carrying confidence intervals. The census projection is a model, not a measurement. A competent officer triangulates rather than venerates one number, and the exam tests precisely this literacy.
Apply the same literacy to indicator selection. Life expectancy summarises mortality across all ages but hides distribution — it can rise while tribal districts stagnate. IMR is sensitive to primary-care quality, which made it the choice for international comparison and for NPP 2000's target of below 30. DALY, the great leveller of the Global Burden of Disease, adds non-fatal burden: cataract, depression and hearing loss barely kill yet rank high in DALYs, which is why programme priorities shifted when India began measuring DALYs. Every indicator is a lens, and knowing its blind spot — mean versus distribution, fatal versus non-fatal burden, count versus estimate — is the mark the examiner is hunting.
Where students slip
The recurring errors are source-blending and date-dropping. Candidates quote "India's IMR is 28" without saying SRS 2020, or pair NFHS stunting with SRS IMR in one sentence as though from one system — each figure must travel with its source and year or a viva will dismantle it. The second slip is definitional: child mortality rate (1-4 years) versus under-five mortality rate (0-4), and perinatal mortality (stillbirths plus first-week deaths per 1000 total births) versus neonatal mortality — rapid-fire territory. Third, candidates describe CRS and SRS interchangeably; the CRS is a legal record with completeness problems, while the SRS is a designed sample that produces the official rates. Finally, positive health is a listed indicator category — quoting it (health-adjusted life expectancy) separates the prepared from the parroting.
Frequently asked questions
What are vital statistics and their main sources in India?
Continuous data on births, deaths and other vital events, drawn in India from the Census, Civil Registration System, Sample Registration System, NFHS, disease notification and routine HMIS reporting.
How do the CRS and SRS differ?
The CRS is compulsory legal registration of every birth and death under the 1969 Act, while the SRS is a dual-record sample survey that generates India's official fertility and mortality rates.
What is the total fertility rate as per NFHS-5?
India's TFR is 2.0 children per woman (2019-21), slipping just below the replacement level of 2.1.
Why is DALY preferred over mortality for burden comparisons?
Disability-adjusted life years add years lived with disability to years of life lost, so non-fatal but disabling conditions such as depression and cataract count alongside killers.
Which two mortality indicators are used most for international comparison?
Life expectancy at birth and the infant mortality rate — the former summarising all-cause mortality, the latter flagging the quality of primary care and socio-economic development.