Mangold W D
Am J Public Health. 1981 Jun;71(6):601-5. doi: 10.2105/ajph.71.6.601.
This study is an analysis of daily variations in neonatal mortality among 66,049 live births in the 1974-75 Arkansas live birth cohort. Weekends and holidays in general, and Sundays in particular, were found to have the fewest number of deliveries. Variations in deliveries by the day of the week were attributed to obstetric practices. Births weighing less than 2500 gms. were over-represented among weekend deliveries as were infants experiencing a birth-related injury. Neonatal mortality was found to be higher among weekend deliveries with a Sunday rate that was 27 per cent above the weekly average. Separate analysis by race and birth weight revealed the weekend peak to be more pronounced among non-whites. Analysis of daily variations by cause of death showed that Sundays exceeded the overall average for seven of the eight cause of death categories examined. (Am J Public Health 1981;71:601-605.)
本研究分析了1974 - 1975年阿肯色州出生队列中66049例活产儿的新生儿死亡率日变化情况。总体而言，周末和节假日，尤其是周日，分娩数量最少。一周中不同日期分娩数量的差异归因于产科操作。体重不足2500克的婴儿在周末分娩中占比过高，与分娩相关受伤的婴儿也是如此。研究发现，周末分娩的新生儿死亡率较高，周日的死亡率比周平均水平高出27%。按种族和出生体重进行的单独分析显示，非白人中周末死亡率峰值更为明显。按死因进行的日变化分析表明，在所研究的八个死因类别中，有七个类别的周日死亡率超过了总体平均水平。（《美国公共卫生杂志》1981年；71:601 - 605）
