Introducing new data on gestation-specific infant mortality among babies born in 2005 in England and Wales |
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Authors: | Moser Kath Macfarlane Alison Chow Yuan Huang Hilder Lisa Dattani Nirupa |
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Affiliation: | Child Health Team, Office for National Statistics, London. |
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Abstract: | Gestational age is highly correlated with birth outcomes including birthweight and infant mortality. Since gestational age is not recorded at the registration of live births in England and Wales, it has not been possible to produce routine statistics on gestation-specific infant mortality rates. A new system, introduced in 2002, for allocating NHS numbers at birth (NN4B) provided the opportunity to obtain gestational age information. NN4B records have been linked with birth registration data for all births occurring in 2005, and further linked with registration records for deaths in the first year of life. Thus, for the first time, we produce gestation-specific infant mortality rates for England and Wales as a whole, including in relation to birthweight, multiplicity, age of mother, marital status/registration type, and the National Statistics Socio-Economic Classification. |
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