It shows the sex ratio at birth, whereas the census shows the ratio for children aged 0-6 (census figures for the sex ratio at birth have not been published).

ECONOMIST: Banyan

The 2005 "mini-census" reported that the sex ratio at birth, expressed as the number of boys per 100 girls, was 119--when the global average was somewhere between 103 to 106.

FORBES

The sex ratio of 15-year-olds in 2005 was not far from the sex ratio at birth in 1990.

ECONOMIST: Gendercide

One of the few to have succeeded in ending the practice is South Korea, where the sex ratio at birth peaked in 1990 and has since fallen to near-normal levels.

ECONOMIST: Banyan

In Punjab state, the sex ratio at birth improved from 129 male births per 100 female births in 1999-2001 to 119 in 2005-07.

ECONOMIST: Letters

On the basis of the national sample surveys (NSS), they calculate that India's sex ratio at birth swung from 924 females per 1, 000 males in 2004-05 to 977 in 2011, a stunning turnaround in favour of girls.

ECONOMIST: Banyan