Chassé M, Fergusson D A, Chen Y
Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.
Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada.
Int J Obes (Lond). 2014 Nov;38(11):1403-9. doi: 10.1038/ijo.2014.28. Epub 2014 Feb 14.
To investigate the association between body mass index (BMI) and the risk of nonfatal body injury.
We analyzed data from 113,203 adults who participated in the Canadian Community Health Survey conducted in 2009-2010. Log-binomial models were used to estimate crude and adjusted relative risks of the association between BMI and the risk of body injury for men and women.
Of 113,203 adult participants, 15,194 had self-reported body injuries during the past 12 months, with a 12-month cumulative incidence of 13.7% (weighted to Canadian population). There was a significant interaction between gender and BMI in relation to the risk of body injury, and therefore, analyses were stratified by gender. For women, we found a significant association between BMI and an increased risk of body injury. Women with an increased BMI had a significant increased risk of body injuries as compared with those with normal weight (adjusted relative risk: 1.13, 95% confidence interval (CI)=1.02-1.25 for BMI 30.0-34.9 kg m(-)(2); 1.17, 95% CI=1.00-1.37 for BMI 35.0-39.9 kg m(-)(2); 1.41, 95% CI=1.16-1.69 for BMI ⩾ 40 kg m(-)(2)). A reduced risk of injury was observed in underweight women. There was no significant association between BMI and the risk of body injury for men. Obese persons of both gender were more likely to suffer injuries to the knee and lower leg, and in less demanding activities such as household chores or using the stairs.
We therefore conclude that increased BMI may be a risk factor for body injury in women, but not in men.
研究体重指数（BMI）与非致命身体损伤风险之间的关联。
我们分析了2009年至2010年参与加拿大社区健康调查的113,203名成年人的数据。采用对数二项式模型来估计BMI与男性和女性身体损伤风险之间关联的粗相对风险和调整后相对风险。
在113,203名成年参与者中，有15,194人在过去12个月内有自我报告的身体损伤，12个月累积发病率为13.7%（加权至加拿大人口）。在身体损伤风险方面，性别与BMI之间存在显著交互作用，因此，分析按性别分层。对于女性，我们发现BMI与身体损伤风险增加之间存在显著关联。与体重正常的女性相比，BMI升高的女性身体损伤风险显著增加（调整后相对风险：BMI为30.0 - 34.9 kg m⁻²时，1.13，95%置信区间（CI）=1.02 - 1.25；BMI为35.0 - 39.9 kg m⁻²时，1.17，95% CI = 1.00 - 1.37；BMI≥40 kg m⁻²时，1.41，95% CI = 1.16 - 1.69）。体重过轻的女性损伤风险降低。BMI与男性身体损伤风险之间无显著关联。两性肥胖者在诸如家务或爬楼梯等要求较低的活动中更易发生膝盖和小腿受伤。
因此，我们得出结论，BMI升高可能是女性身体损伤的一个风险因素，但不是男性的风险因素。
