Department of Orthopedics, Clinical Sciences Lund, Sweden.
Ann Rheum Dis. 2013 Mar;72(3):401-5. doi: 10.1136/annrheumdis-2012-201472. Epub 2012 Jun 7.
To investigate sick leave and disability pension in working-age subjects with knee osteoarthritis (OA) compared with the general population.
Population-based cohort study: individual-level inpatient and outpatient Skåne Health Care Register data were linked with data from the Swedish Social Insurance Agency. In 2009 all working-age (16-64 years) Skåne County residents who in 1998-2009 had been diagnosed with knee OA (International Classification of Diseases-10 code M17) were identified and their sick leave and disability pension in 2009 related to those of the general working-age population (n=789 366) standardised for age.
15 345 working-age residents (49.6% women) with knee OA were identified. Compared with the general population, the RR (95% CI) of having had one or more episodes of sick leave during the year was 1.82 (1.73 to 1.91) for women and 2.03 (1.92 to 2.14) for men with knee OA. The corresponding risk for disability pension was 1.54 (1.48 to 1.60) for women and 1.36 (1.28 to 1.43) for men with knee OA. The annual mean number of sick days was 87 for each patient with knee OA and 57 for the general population (age- and sex-standardised). Of all sick leave and disability pension in the entire population, 2.1% of days were attributable to knee OA or associated comorbidity in the patients with knee OA (3.1% for sick leave and 1.8% for disability pension).
Subjects with doctor-diagnosed knee OA have an almost twofold increased risk of sick leave and about 40-50% increased risk of disability pension compared with the general population. About 2% of all sick days in society are attributable to knee OA.
调查膝骨关节炎（OA）患者与普通人群相比，其在工作年龄人群中的病假和残疾抚恤金情况。
基于人群的队列研究：个体层面的斯科讷保健注册数据与瑞典社会保险局的数据进行了链接。2009 年，在 1998-2009 年间被诊断为膝 OA（国际疾病分类第 10 版代码 M17）的所有斯科讷县工作年龄（16-64 岁）居民均被确定，并根据年龄对他们在 2009 年的病假和残疾抚恤金与普通工作年龄人群（n=789366）进行了标准化。
共确定了 15345 名患有膝 OA 的工作年龄居民（49.6%为女性）。与普通人群相比，女性和男性膝 OA 患者当年发生一次或多次病假的 RR（95%CI）分别为 1.82（1.73 至 1.91）和 2.03（1.92 至 2.14）。女性和男性膝 OA 患者残疾抚恤金的相应风险分别为 1.54（1.48 至 1.60）和 1.36（1.28 至 1.43）。每位膝 OA 患者的年平均病假天数为 87 天，普通人群为 57 天（年龄和性别标准化）。在整个人群中，所有病假和残疾抚恤金的 2.1%归因于膝 OA 或膝 OA 患者的相关合并症（病假为 3.1%，残疾抚恤金为 1.8%）。
与普通人群相比，经医生诊断患有膝 OA 的患者病假的风险增加近两倍，残疾抚恤金的风险增加约 40-50%。社会中约有 2%的病假归因于膝 OA。
