Why is there variation in India’s fertility rates? | Explained

The story so far: The Sample Registration System (SRS) Statistical Report of 2021, released by the Office of the Registrar General of India recently, showed that India has maintained its Total Fertility Rate (TFR) at 2.0 — the same as reported in 2020.

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While the national average for TFR has remained the same, there is a wide regional variation in TFR data for States and Union Territories (UTs) reported independently.

Which State saw highest TFR?

The highest TFR was recorded in Bihar at 3.0 and the lowest was reported for West Bengal and Delhi at 1.4. The data went on to reveal that in the decade between 2009-11 and 2019-21, TFR has been on an overall decline, in States, and nationally, albeit at different rates.

What does TFR measure?

The SRS report calculates TFR to measure the number of children each woman in India is expected to have throughout her reproductive age, which the survey defines between 15 and 49 years. According to the report, this value is derived from other indicators for fertility — more specifically age-specific fertility rates put together through a formula. Age-specific fertility rates measure the number of children women of a particular age range are expected to have. This data is gathered as part of the SRS survey, which is the largest demographic survey conducted by India to measure various fertility and mortality indicators annually. The SRS 2021 survey was conducted across 8,842 sample units in all the States and UTs, and compiles data gathered from a sample size of about 84 lakh people.