York University.
J Res Adolesc. 2016 Dec;26(4):889-901. doi: 10.1111/jora.12239. Epub 2015 Nov 11.
Growth mixture modeling was used to identify different trajectories of body mass index (BMI) among adolescents ages 10-15 from a national sample. Three distinct classes were found for both boys and girls: "normative" (90.9% and 89.7%), "high increasing" (6.3% and 7.4%), and "decreasing" (2.8% and 2.9%). Multinomial logistic regression identified family income as predictive of class membership for boys and pubertal status and being rural as predictive for girls. Parent-reported health was a common predictor across gender. Growth curves of internalizing symptoms and physical activity were modeled to explore trends across classes. Findings highlight complexities in the relations between BMI, internalizing symptoms, and physical activity in this developmental period.
采用增长混合建模方法，从全国性样本中确定了 10-15 岁青少年的体重指数 (BMI) 的不同轨迹。对于男孩和女孩，都发现了三个不同的类别：“正常”（90.9%和89.7%）、“高增长”（6.3%和7.4%）和“下降”（2.8%和2.9%）。多项逻辑回归确定家庭收入对男孩的类别归属具有预测性，而青春期状态和农村地区则对女孩具有预测性。父母报告的健康状况是性别共有的预测因素。对内在症状和体育活动的增长曲线进行建模，以探索各类别之间的趋势。研究结果强调了在这一发展时期 BMI、内在症状和体育活动之间关系的复杂性。
