Department of Community Health Sciences, Brock University, St. Catharines, Ontario, Canada.
Ann Epidemiol. 2012 Feb;22(2):120-5. doi: 10.1016/j.annepidem.2011.11.002.
To determine whether leg-length to height ratio (LLHR) measured in children can be used to assess overweight and obese status 3 years later.
A total of 1166 children from South Ontario, Canada, were assessed in grade five and again in grade eight were included in this analysis. On the basis of LLHR gender-specific quartile cutoffs in grade five, children were categorized into four groups (Q1[low]-Q4). Gender and age specific cutoffs of body mass index were used to categorize children as overweight/obese or normal weight in grade eight. Multiple logistic regression models were used to examine the overweight/obesity risk association with LLHR.
In comparing those in Q1 of LLHR, we found the odds ratios (OR, 95% confidence interval) of overweight/obese for those in the Q2-Q4 were 0.60 (0.29-1.21), 0.43 (0.21-0.89), and 0.32 (0.15-0.70) for boys and 0.77 (0.36-1.64), 0.60 (0.28-1.29), and 0.27 (0.12-0.62) for girls, respectively. The overweight/obesity risk association with LLHR remains after removing those who were considered overweight/obese at grade five.
LLHR is associated with risk of childhood overweight/obesity. Further studies are warranted to investigate the role of LLHR on development of obesity.
确定儿童下肢长与身高的比例（LLHR）是否可用于评估 3 年后超重和肥胖状况。
本分析纳入了来自加拿大安大略省南部的 1166 名五、八年级儿童。根据五年级时 LLHR 的性别特异性四分位间距截断值，将儿童分为四组（Q1[低]-Q4）。八年级时使用性别和年龄特异性的体重指数截断值将儿童分为超重/肥胖或正常体重。采用多因素逻辑回归模型来研究 LLHR 与超重/肥胖风险之间的关联。
在比较 Q1 组和 Q2-Q4 组时，我们发现男性 Q2-Q4 组的超重/肥胖比值比（OR，95%置信区间）分别为 0.60（0.29-1.21）、0.43（0.21-0.89）和 0.32（0.15-0.70），女性的相应比值比分别为 0.77（0.36-1.64）、0.60（0.28-1.29）和 0.27（0.12-0.62）。去除五年级时已被认为超重/肥胖的儿童后，LLHR 与超重/肥胖的相关性仍然存在。
LLHR 与儿童超重/肥胖的风险相关。需要进一步研究以探讨 LLHR 在肥胖发展中的作用。
