Otremski Itshak, Livshits Gregory, Cohen Zvi
Department of Traumatology and Orthopaedics, Ichilov Municipal Hospital, Tel Aviv University, Ramat Aviv 69987, Tel Aviv, Israel.
Research Unit-Human Population Biology, Division of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv 69987, Tel Aviv, Israel.
Am J Hum Biol. 1992;4(3):337-344. doi: 10.1002/ajhb.1310040309.
A sample (1,031 individuals) of infants born at varying gestational ages (26-42 weeks) and birth weights (860-4,750 g) was used in a study of 5 developmental traits appearing during the first 2 years of life: the ages at which a child could turn over, sit up, stand up, walk without support, and eruption of the first tooth. The mean age of attaining each developmental milestone was not significantly different among the Jewish ethnic groups represented in the sample. In addition, the following potential predictor variables were evaluated: the infant's weight, length, and head circumference at birth and at 1.5 years of age; maternal body weight, height at the infant's birth, and number of miscarriages; family size and parental occupation. Only few variables showed significant effects with developmental milestone; birth weight made the greatest contribution. Highly significant intraclass and Pearson correlations were observed between siblings in the ages of appearance of each of the 5 developmental milestones. The correlations ranged between 0.30 and 0.53 for the total group, after adjusting for all significant covariates. © 1992 Wiley-Liss, Inc.
一项研究使用了一个样本（1031名个体），这些婴儿出生时孕周不同（26 - 42周），出生体重也不同（860 - 4750克），该研究针对生命最初两年出现的5种发育特征展开：孩子能够翻身、坐起、站立、独立行走以及长出第一颗牙的年龄。在样本所代表的犹太族裔群体中，达到每个发育里程碑的平均年龄没有显著差异。此外，还评估了以下潜在预测变量：婴儿出生时及1.5岁时的体重、身长和头围；母亲的体重、婴儿出生时母亲的身高以及流产次数；家庭规模和父母职业。只有少数变量对发育里程碑有显著影响；出生体重的影响最大。在5个发育里程碑出现的年龄方面，观察到兄弟姐妹之间存在高度显著的组内相关性和皮尔逊相关性。在调整所有显著协变量后，整个样本组的相关性在0.30至0.53之间。© 1992威利 - 利斯公司。
