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Sex ratio at birth by birth order
Sex ratio at birth measures the number of male births per 100 female births. This is shown below by birth order of children i.e. the first, second or third-born child. Birth ratios are naturally male-biased, with an expected ratio of 105 male births per 100 female births.
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Exact citation
Jiang et al. (2017). Changes in sex ratio at birth in China: a decomposition by birth order.
Attribution: Jiang et al. and NSO Korea
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