Olsen S F, Olsen J
Institute of Epidemiology and Social Medicine, University of Aarhus.
Scand J Soc Med. 1994 Sep;22(3):219-24. doi: 10.1177/140349489402200311.
The objectives were to compare perinatal mortality (PNM) in the Faroes and Denmark while accounting for the high birth weights in the Faroes, and to discuss methodological aspects related to this task. We applied conventional methods employing absolute birth weight standards, and the Wilcox-Russell way of comparing relative birth weights. During 1977-85 perinatal mortality (PNM) in the Faroes was 14.7 (98 cases) per 1,000 births, and 1.57 times higher than that in Denmark. Conventional method: birth weight-standardised risk ratio for PNM in the Faroes v Denmark was 1.95; the risk ratio declined with increasing birth weight. Wilcox-Russell model: the risk tended to be more uniformly increased across the birth weight distribution when babies with same relative birth weights were compared; the residual component of the birth weight distribution (i.e. the excess of observed births in the lower tail beyond what could be predicted by a Gaussian distribution) was 2.1% in the Faroes and 3.6% in Denmark, which does not fit with the model assumption that the size of the residual component is a strong determinant of a population's PNM.
研究目的是比较法罗群岛和丹麦的围产期死亡率（PNM），同时考虑法罗群岛较高的出生体重，并讨论与该任务相关的方法学问题。我们采用了采用绝对出生体重标准的传统方法，以及比较相对出生体重的威尔科克斯 - 拉塞尔方法。1977年至1985年期间，法罗群岛的围产期死亡率（PNM）为每1000例出生中有14.7例（98例），比丹麦高1.57倍。传统方法：法罗群岛与丹麦围产期死亡率的出生体重标准化风险比为1.95；风险比随出生体重增加而下降。威尔科克斯 - 拉塞尔模型：当比较相对出生体重相同的婴儿时，风险在整个出生体重分布中倾向于更均匀地增加；法罗群岛出生体重分布的残差分量（即观察到的出生数在较低尾部超过高斯分布预测值的部分）为2.1%，丹麦为3.6%，这与残差分量大小是人群围产期死亡率的强决定因素这一模型假设不符。
