Kelishadi Roya, Qorbani Mostafa, Hosseini Mostafa, Bahreynian Maryam, Djalalinia Shirin, Motlagh Mohammad Esmail, Ardalan Gelayol, Khoramdad Maliheh, Mansourian Morteza, Asayesh Hamid, Heshmat Ramin
J Pediatr Endocrinol Metab. 2016 Sep 1;29(9):1069-76. doi: 10.1515/jpem-2016-0041.
The aim of the study was to provide the age- and sex-specific percentile values of anthropometric measures for Iranian children and adolescents.
This cross-sectional nationwide survey was conducted on a representative sample of 14,880 school students, selected by multistage random cluster sampling from urban and rural areas of 30 provinces in Iran. Anthropometric measures including body mass index (BMI), waist circumference (WC), hip circumference (HC), and wrist circumference were measured under standard protocols by using calibrated instruments. Age- and gender-specific reference values were developed for anthropometric measures by the maximum penalized likelihood approach [Cole's least mean square (LMS) method].
In the present study, 13,486 out of the 14,880 invited subjects completed all the required data of the study (participation rate: 90.6%). Participants consisted of 6640 girls (49.2%) and 75.6% urban residents; their mean and standard deviation (SD) age was 12.47±3.36 years. The BMI percentile curves of girls had a sharp increase from 14 to 18 years, and then began to plateau, but among boys, these curves had a consistent increase until the age of 18 years. In addition, the higher percentiles were higher in adolescent boys than girls. The HC percentile curves of both sexes had a persistent increase and the percentiles for HC were higher in adolescent girls than in boys. WC had a sharp increase from 7 to 18 years of age for boys, whereas for girls, these curves had a less sharp increase with age. In all ages, the percentiles for wrist circumference were higher in adolescent boys than girls.
The findings of this study highlight the necessity of paying special attention to developing age- and gender-specific percentiles of anthropometric measures in children and adolescents.
本研究的目的是提供伊朗儿童和青少年人体测量指标的年龄和性别特异性百分位数。
这项全国性横断面调查在14880名学生的代表性样本上进行，这些学生通过多阶段随机整群抽样从伊朗30个省的城乡地区选取。使用校准仪器按照标准方案测量包括体重指数（BMI）、腰围（WC）、臀围（HC）和腕围在内的人体测量指标。通过最大惩罚似然法[科尔最小均方（LMS）法]制定人体测量指标的年龄和性别特异性参考值。
在本研究中，14880名受邀受试者中有13486人完成了研究的所有所需数据（参与率：90.6%）。参与者包括6640名女孩（49.2%）和75.6%的城市居民；他们的平均年龄和标准差（SD）为12.47±3.36岁。女孩的BMI百分位数曲线在14至18岁时急剧上升，然后开始趋于平稳，但在男孩中，这些曲线在18岁之前持续上升。此外，青少年男孩的较高百分位数高于女孩。两性的HC百分位数曲线持续上升，青少年女孩的HC百分位数高于男孩。男孩的WC在7至18岁时急剧上升，而女孩的这些曲线随年龄增长上升幅度较小。在所有年龄段，青少年男孩的腕围百分位数高于女孩。
本研究结果强调了在儿童和青少年中制定年龄和性别特异性人体测量指标百分位数时特别关注的必要性。
