Doyle L W, Faber B, Callanan C, Ford G W, Davis N M
The Division of Newborn Services, the Royal Women's Hospital, Melbourne, Australia.
Arch Dis Child. 2004 Apr;89(4):347-50. doi: 10.1136/adc.2002.025924.
To determine the body size of extremely low birth weight (ELBW, birth weight 500-999 g) subjects in early adulthood.
Cohort study examining the height and weight of 42 ELBW survivors free of cerebral palsy between birth and 20 years of age. Weight and height measurements were converted to Z (SD) scores.
At birth the subjects had weight Z scores substantially below zero (mean birth weight Z score -0.90, 95% CI -1.25 to -0.54), and had been lighter than average at ages 2, 5, and 8 years. However, by 14, and again at 20 years of age their weight Z scores were not significantly different from zero. At ages 2, 5, 8, 14, and 20 years of age their height Z scores were significantly below zero. Their height at 20 years of age was, however, consistent with their parents' height. As a group they were relatively heavy for their height and their mean body mass index (BMI) Z score was almost significantly different from zero (mean difference 0.42, 95% CI -0.02 to 0.84). Their mean BMI (kg/m2) was 24.0 (SD 5.2); 14 had a BMI >25, and four had a BMI >30.
Despite their early small size, by early adulthood the ELBW subjects had attained an average weight, and their height was consistent with their parents' height. They were, however, relatively heavy for their height.
确定极早产儿（超低出生体重儿，出生体重500 - 999克）成年早期的身体尺寸。
队列研究，对42名无脑瘫的超低出生体重儿幸存者从出生到20岁期间的身高和体重进行检查。体重和身高测量值转换为Z（标准差）分数。
出生时，这些受试者的体重Z分数显著低于零（平均出生体重Z分数 -0.90，95%置信区间 -1.25至 -0.54），并且在2岁、5岁和8岁时体重均低于平均水平。然而，到14岁时，以及再次到20岁时，他们的体重Z分数与零无显著差异。在2岁、5岁、8岁、14岁和20岁时，他们的身高Z分数显著低于零。不过，他们20岁时的身高与父母身高相符。作为一个群体，他们相对身高而言体重较重，平均体重指数（BMI）Z分数几乎与零有显著差异（平均差值0.42，95%置信区间 -0.02至0.84）。他们的平均BMI（kg/m²）为24.0（标准差5.2）；14人的BMI > 25，4人的BMI > 30。
尽管这些超低出生体重儿早期体型较小，但到成年早期时已达到平均体重，且身高与父母身高相符。然而，相对身高而言他们体重较重。
