Zwahr C, Voigt M, Thielemann F, Lubinski H, Kunz L
Zentralbl Gynakol. 1979;101(16):1015-24.
Retrospective polydimensional studies were conducted into correlations between age, parity, and occupation (social status) of gravidae, on the one hand, and deliveries of "infants of low birth weight", on the other. The reference group amounted to 16.729 newborns, twins and stillbirth excluded, with 5.85 per cent of those newborns with low birth weights up to 2,500 g. Included in the above figure are all newborns delivered in the Regional Hospital of Schwerin, between 1969 and 1977.--Any single factor quoted, age, parity, and occupation, was found to affect birth weight, effects being by the following order: parity, age, occupation.
我们进行了回顾性多维度研究，以探讨孕妇的年龄、胎次和职业（社会地位）与“低体重儿”分娩之间的相关性。参考组包括16729名新生儿，不包括双胞胎和死产儿，其中出生体重低于2500克的低体重新生儿占5.85%。上述数字包括1969年至1977年在什未林地区医院分娩的所有新生儿。研究发现，所提及的任何单一因素，即年龄、胎次和职业，都会影响出生体重，影响程度按以下顺序排列：胎次、年龄、职业。
