Post-graduation Department, Bahian School of Medicine and Public Health, Federal University of Bahia, Salvador, BA, Brazil.
Pain Med. 2011 Mar;12(3):394-402. doi: 10.1111/j.1526-4637.2011.01063.x. Epub 2011 Feb 18.
To estimate the association among knee pain and central obesity.
A cross-sectional study was carried out in Salvador, Brazil, with a sample of 2,297 individuals ≥20 years of age. A standardized questionnaire was applied at home to collect data about pain, sociodemographic characteristics and abdominal circumference measurement. Unadjusted (bivariate analysis) and adjusted odds ratio (OR) and 95%CI were estimated by using backward stepwise logistic regression.
The prevalence of knee pain was found in 11.2% of the studied sample. Unadjusted OR associations (P<0.1) were found for male (OR 2.70, CI [confidence interval] 2.01-3.63), older age (OR 2.98, CI 1.89-4.42), and obesity (OR 1.62, CI 1.22-2.15). Adjusted ORs (P<0.05) were found for obesity-married individuals (OR 4.69, CI 1.09-20.11), separated (OR 11.03, CI 2.09-58.20) or widowed (OR 7.17, CI 1.40-36.61), and male (OR 2.35, CI 1.25-4.41). The OR of nonobese men was 2.66, CI 1.74-4.06, but being married seems to protect them of knee pain (OR 0.66, CI 0.45-0.96).
In this study, we found a knee pain prevalence of 11.2% and positive association with the male gender, married, separated or widowed, and a protective association for knee pain in nonobese married male. Aging, obesity, and excessive alcohol consumption were independent correlates of knee pain in the studied population sample.
评估膝关节疼痛与中心性肥胖之间的关联。
本研究为巴西萨尔瓦多的一项横断面研究，样本量为 2297 名≥20 岁的个体。在家中应用标准化问卷收集疼痛、社会人口学特征和腰围测量数据。使用逐步向后逻辑回归进行未调整（双变量分析）和调整后的比值比（OR）和 95%置信区间（CI）的估计。
在所研究的样本中，膝关节疼痛的患病率为 11.2%。未调整的 OR 关联（P<0.1）为男性（OR 2.70，CI [置信区间] 2.01-3.63）、年龄较大（OR 2.98，CI 1.89-4.42）和肥胖（OR 1.62，CI 1.22-2.15）。调整后的 OR（P<0.05）为肥胖已婚个体（OR 4.69，CI 1.09-20.11）、离异（OR 11.03，CI 2.09-58.20）或丧偶（OR 7.17，CI 1.40-36.61）和男性（OR 2.35，CI 1.25-4.41）。非肥胖男性的 OR 为 2.66，CI 1.74-4.06，但已婚似乎可以保护他们免受膝关节疼痛（OR 0.66，CI 0.45-0.96）。
在这项研究中，我们发现膝关节疼痛的患病率为 11.2%，与男性、已婚、离异或丧偶、非肥胖已婚男性膝关节疼痛的保护关联呈正相关，与年龄增长、肥胖和过量饮酒呈独立相关。
