Zwahr C, Voigt M, Kunz L, Thielemann F, Lubinski H
Zentralbl Gynakol. 1980;102(13):738-47.
Polydimensional retrospective studies were conducted into correlations between interruption of pregnancy, abortion, and premature birth of infants weighing less than 2,501 g, on the one hand, and the general phenomenon of low birth weight, on the other. Reference was made to parity. The studies were undertaken over a period between 1969 and 1977. The birth total investigated was 17,076, stillbirths and twins excluded.-The impact of all factors involved as well as the statistical significance were tested and verified by calculation of information measure 2-I, followed by an approximative chi 2-test. The results suggested that the parameters studied were of somewhat staggered impact upon low birth weight. Premature birth, interruption of pregnancy, and abortion was the order of impact at all parity levels studied.
针对妊娠中断、流产以及体重不足2501克婴儿的早产与低体重这一普遍现象之间的相关性，开展了多维度回顾性研究。研究涉及了产次。研究在1969年至1977年期间进行。所调查的出生总数为17076例，不包括死产和双胞胎。通过计算信息测度2-I，对所有相关因素的影响以及统计学意义进行了检验和验证，随后进行了近似卡方检验。结果表明，所研究的参数对低体重的影响在一定程度上参差不齐。在所研究的所有产次水平上，早产、妊娠中断和流产的影响顺序如此。
