Lazzeri Giacomo, Rossi Stefania, Kelly Colette, Vereecken Carine, Ahluwalia Namanjeet, Giacchi Mariano V
1Department of Molecular and Developmental Medicine,Research Centre for Health Promotion and Education,University of Siena,Via A. Moro,53100 Siena,Italy.
2Health Promotion Research Centre,National University of Ireland Galway,Galway,Republic of Ireland.
Public Health Nutr. 2014 Oct;17(10):2207-15. doi: 10.1017/S1368980013002541. Epub 2013 Sep 24.
To describe the prevalence of 'graded thinness' in children aged 11, 13 and 15 years in eleven developed countries and to identify trends in the prevalence of 'thinness' (BMI < 17 kg/m2 at age 18 years) by age and gender.
Cross-sectional study using data collected through self-reported questionnaires.
Data were taken from the 1997/1998, 2001/2002 and 2005/2006 surveys of the Health Behaviours in School-aged Children (HBSC) Study.
Children and adolescents from ten European countries and the USA (n 158 000).
Prevalence of grades 1, 2 and 3 of thinness was higher among 11-year-old students compared with the 13- and 15-year-olds in all countries. A higher prevalence of thinness was observed in girls than in boys. Since 1998 the prevalence of thinness decreased steadily in Czech boys and girls, while it increased for French girls. In the total European sample of females, thinness decreased from 1998 to 2006 (χ 2 for trend, P < 0·01). Age-adjusted logistic regression analysis showed that Czech boys and girls, and Flemish and American girls were less likely to be thin in 2006 than in 1998; while a noteworthy increment, even if borderline significant, was observed for French girls with a 41% increase in the likelihood to be thin.
Our findings suggest that thinness is an important overlooked phenomenon with wide variation in prevalence and trends across developed countries. It deserves further longitudinal studies in a multinational context that could increase the understanding of the factors associated with thinness and contribute to developing preventive and nutritional programmes targeted at controlling obesity and chronic diseases, while monitoring thinness.
描述11个发达国家11岁、13岁和15岁儿童中“分级消瘦”的患病率，并确定按年龄和性别划分的“消瘦”（18岁时BMI<17kg/m²）患病率趋势。
采用通过自我报告问卷收集的数据进行横断面研究。
数据取自1997/1998年、2001/2002年和2005/2006年学龄儿童健康行为（HBSC）研究的调查。
来自10个欧洲国家和美国的儿童及青少年（n=158000）。
在所有国家中，11岁学生的1级、2级和3级消瘦患病率高于13岁和15岁学生。女孩的消瘦患病率高于男孩。自1998年以来，捷克男孩和女孩的消瘦患病率稳步下降，而法国女孩的患病率则有所上升。在欧洲女性总样本中，消瘦率从1998年到2006年有所下降（趋势χ²检验，P<0.01）。年龄调整后的逻辑回归分析表明，2006年捷克男孩和女孩、佛兰芒女孩和美国女孩消瘦的可能性低于1998年；而法国女孩的消瘦可能性显著增加，即使临界显著，增加了41%。
我们的研究结果表明，消瘦是一个重要但被忽视的现象，在发达国家中患病率和趋势差异很大。它值得在跨国背景下进行进一步的纵向研究，这可以增进对与消瘦相关因素的理解，并有助于制定旨在控制肥胖和慢性病的预防和营养计划，同时监测消瘦情况。
