Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, The Netherlands.
Department of Child Health, TNO, Leiden, The Netherlands.
Int J Obes (Lond). 2018 Jun;42(6):1230-1238. doi: 10.1038/s41366-018-0135-9. Epub 2018 Jun 11.
Overweight is shown to track (= to maintain a relative position in a distribution) from childhood to adulthood, but is mostly studied in preobesogenic cohorts and in single ethnic groups. Little is known about tracking of thinness by ethnicity.
to determine (differences in) tracking of BMI (class) from 3 through 15 years and the prediction of BMI class at 13-15 years of age in contemporary Dutch, Turkish, Moroccan and South Asian children living in the Netherlands.
Historical cohort of 7625 children, born 1994-1997, with 24,376 measurements of BMI. BMI z-score and BMI class was analysed using universal criteria. South Asian children were also assessed using ethnic specific BMI criteria. Diagnostic odds ratios (OR) and test properties were calculated to estimate the ability of BMI class at 3-4 years to predict BMI class at 13-15 years.
Tracking of thinness between 3 and 15 years was stronger than that of overweight, as indicated by a generally higher diagnostic OR. BMI trajectories between 3 and 15 years of age of thin, normal weight and overweight adolescents were, although significantly different, quite similarly shaped in children of Dutch, Turkish and Moroccan descent. The South Asian BMI trajectory deviated considerably from the other ethnic groups, but the differences disappeared when South Asian specific BMI criteria were applied. A substantial proportion of overweight developed between 5-10 years, after which less children shifted to other BMI classes. A total of 55-78% of children with overweight at 3-4 years retained their overweight at 13-15 years, and 10-20% of 3-4 year olds with thinness remained thin.
In all ethnic groups, overweight and especially thinness highly tracked into adolescence. South Asian children differed from the other ethnic groups when universal BMI criteria were applied, but with South Asian specific BMI criteria tracking patterns became more concordant.
超重与成年期的肥胖相关，从儿童期到成年期一直保持相对稳定。但这主要在肥胖前期队列和单一族群中进行研究。关于不同族群的消瘦情况的追踪研究则很少。
确定荷兰、土耳其、摩洛哥和南亚裔儿童从 3 岁到 15 岁的 BMI（类别）的追踪（差异）情况，以及预测他们在 13-15 岁时的 BMI 类别。
对 1994-1997 年出生的 7625 名儿童进行了历史队列研究，共进行了 24376 次 BMI 测量。采用通用标准分析 BMI z 分数和 BMI 类别。对南亚裔儿童也采用了特定的 BMI 标准。计算诊断比值比（OR）和测试特性，以评估 3-4 岁时的 BMI 类别预测 13-15 岁时 BMI 类别的能力。
消瘦的追踪性在儿童期到成年期之间比超重更强，这表明诊断 OR 普遍较高。尽管瘦、正常体重和超重青少年的 BMI 轨迹在 3 至 15 岁之间有显著差异，但荷兰、土耳其和摩洛哥裔儿童的 BMI 轨迹形状非常相似。南亚裔的 BMI 轨迹与其他族群有很大的不同，但当应用南亚裔特定的 BMI 标准时，差异就消失了。相当一部分的超重是在 5-10 岁之间发展起来的，此后，较少的儿童转变为其他 BMI 类别。3-4 岁时超重的儿童中有 55-78%在 13-15 岁时仍然超重，而 3-4 岁时消瘦的儿童中有 10-20%仍然消瘦。
在所有族群中，超重，尤其是消瘦，在青少年时期高度追踪。当应用通用 BMI 标准时，南亚裔儿童与其他族群存在差异，但应用南亚裔特定 BMI 标准后，追踪模式变得更加一致。
