Puberty and Influencing Factors in Schoolgirls Living in Istanbul: End of the Secular Trend?
Puberty and Influencing Factors in Schoolgirls Living in Istanbul: End of the Secular Trend?
复制标题
DOI：
10.1542/peds.2010-2267
复制
发表时间：
2011-07-01
期刊：
影响因子：
8
通讯作者：
Bereket, Abdullah
中科院分区：
文献类型：
--
作者：
Atay, Zeynep;Turan, Serap;Bereket, Abdullah
目的：为了（1）建立在月经初潮和青春期阶段的中位数年龄和调查的影响因素和（2）评估的长期趋势，达到青春期在一个过渡society.MATERIALS和METHODS：一个概率单位的方法被用来计算在月经初潮和青春期阶段的中位数年龄从一个横断面研究的4868名健康的女学生（6-18岁）在伊斯坦布尔，土耳其。这些发现与40年前进行的类似研究进行了比较。采用Logistic回归分析青春发育影响因素与进入青春期几率的关系。简单的统计模型被用来测试BMI和某些食物的消费对初潮的影响。结果：初潮的中位数年龄为12.74岁。乳房2 - 5期的中位年龄分别为9.65、10.10、11.75和14.17岁，阴毛2 - 5期的中位年龄分别为10.09、11.19、12.33和14.68岁。来自社会经济上层的女孩更有可能达到月经初潮和B4和B5阶段。较高的BMI似乎是达到初潮的促进因素。宫内生长和胎龄没有影响。初潮的平均年龄与牛奶、鸡蛋、鸡肉或鱼的摄入量无关。结论：青春期的长期趋势可能即将在土耳其结束。虽然乳房发育阶段的中位年龄呈下降趋势，但初潮的中位年龄与40年前大致相同。社会经济地位和BMI是影响初潮和青春期年龄的重要相关因素。儿科2011;128：e40-e45
OBJECTIVE: To (1) establish the median ages at menarche and pubertal stages and investigate influential factors and (2) assess the secular trend in reaching puberty in a transitional society.MATERIALS AND METHODS: A probit method was used to calculate the median age at menarche and pubertal stages from a cross-sectional study of 4868 healthy schoolgirls (aged 6-18 years) in Istanbul, Turkey. The findings were compared with those from a similar study performed 4 decades earlier. Logistic regression was used to analyze the associations between the odds of attaining puberty stages and putatively influential factors. Simple statistical models were used to test the effects of BMI and consumption of certain foods on the onset of menarche.RESULTS: The median age at menarche is 12.74 years. The median ages at breast stages 2 through 5 are 9.65, 10.10, 11.75, and 14.17 years, respectively, and at pubic-hair stages 2 through 5 are 10.09, 11.19, 12.33, and 14.68 years, respectively. Girls from upper socioeconomic classes are more likely to reach menarche and B4 and B5 stages. Higher BMI seems to be a promoting factor for attaining menarche. Intrauterine growth and gestational age had no effect. The average age at menarche was not associated with the consumption of milk, eggs, chicken, or fish.CONCLUSIONS: The secular trend in puberty is probably about to end in Turkey. Although the median ages at the breast stages show a decreasing trend, the median age at menarche is approximately the same as it was 4 decades ago. Socioeconomic status and BMI are important, and related, factors that affect the age at menarche and pubertal stages. Pediatrics 2011;128:e40-e45