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- W2971485280 abstract "The sex ratio at birth (male divided by total births: M/F is often quoted as approximating 0.515. Many factors have been shown to influence this ratio, and these include both acute events and chronic circumstances, both of which may be man-made or natural. This study was carried out in order to attempt to narrow down the range for M/F from a large and internationally recognised dataset of countries reporting live births to the World Health Organisation (WHO). Male and female live births were obtained from a WHO (Health for All – HFA) database for the five year period 1996–2000, for all countries reporting to WHO, and for which these values were reported. This study analysed 88,875,750 live births. M/F is estimated at 0.5147 (95% CI: 0.5146–0.5148), quite close to the widely quoted value of 0.515. M/F may be less due to female foeticide which cannot be accurately assessed, an unavoidable limitation. Other limitations for M/F estimates such as these are broad, cyclic secular variations, broad demographic population changes, chronic stress and an overall declining M/F in industrialised countries." @default.
- W2971485280 created "2019-09-12" @default.
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- W2971485280 date "2020-01-01" @default.
- W2971485280 modified "2023-10-16" @default.
- W2971485280 title "What is the sex ratio at birth?" @default.
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- W2971485280 doi "https://doi.org/10.1016/j.earlhumdev.2019.104858" @default.
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