Anand D, Pharoah P O
Department of Public Health, Muspratt Building, University of Liverpool, Liverpool L69 3GB, UK.
Arch Dis Child. 2000 Nov;83(5):397-400. doi: 10.1136/adc.83.5.397.
Birth weight mortality statistics are important for examining trends and monitoring the outcomes of neonatal care.
To determine the effects of errors in the registered birth weight on birth weight specific mortality.
All twins born in England and Wales during 1993-95 comprise the denominator population. For those twins that died, the Office for National Statistics (ONS) provided copies of the death certificates. From the information on the death certificates, the registered birth weight was validated and amended using predetermined rules. The neonatal, postneonatal, and infant mortality rates were recalculated.
In 2.5% of cases the registered birth weight was "not stated" and in others there were miscoding errors. Important differences between published and amended birth weight specific mortality rates especially in <500 g and >/=3500 g groups were evident.
The bias arising from these errors should be taken into account in interpreting mortality rates and their trends.
出生体重死亡率统计对于研究趋势和监测新生儿护理结果很重要。
确定登记出生体重的误差对特定出生体重死亡率的影响。
1993 - 1995年在英格兰和威尔士出生的所有双胞胎构成分母人群。对于那些死亡的双胞胎，国家统计局（ONS）提供了死亡证明副本。根据死亡证明上的信息，使用预定规则对登记的出生体重进行验证和修正。重新计算新生儿、新生儿后期和婴儿死亡率。
在2.5%的病例中，登记的出生体重为“未注明”，其他病例存在编码错误。已公布的和修正后的特定出生体重死亡率之间存在重要差异，尤其是在<500克和≥3500克的组中。
在解释死亡率及其趋势时应考虑这些误差产生的偏差。
