• 1. Zhuanqiao Community Health Service Center, Minhang District, Shanghai 201108, P.R.China;
  • 2. School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R.China;
LI Liqiu, Email: liliqiu344@163.com
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Objective To systematically review the risk factor for knee osteoarthritis among the Chinese population.Methods CNKI, WanFang Data, PubMed and EMbase databases were electronically searched to collect studies related to risk factors for knee osteoarthritis in the Chinese population from January 2005 to November 2020. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies; then, meta-analysis was performed by using RevMan 5.4 software.Results A total of 18 studies involving 46 375 patients were included. The results of meta-analysis showed that: body mass index (BMI)≥28 kg/m2 (OR=1.78, 95%CI 1.47 to 2.14, P<0.000 1), women (OR=2.20, 95%CI 1.98 to 2.45, P<0.000 1), family history of osteoarthritis (OR=3.56, 95%CI 1.88 to 6.73, P<0.000 1), age≥60 years old (OR=1.42, 95%CI 1.26 to 1.59, P<0.000 1), history of joint trauma (OR=4.11, 95%CI 2.85 to 5.93, P<0.000 1), manual labor (OR=1.57, 95%CI 1.32 to 1.86, P<0.000 1), heavy housework (OR=1.63, 95%CI 1.20 to 2.22, P<0.000 1), humid environment (OR=4.33, 95%CI 2.99 to 6.29, P<0.000 1), drinking habit (OR=1.69, 95%CI 1.21 to 2.36, P=0.002), non-elevator building (OR=1.78, 95%CI 1.18 to 2.70, P=0.006), joint load (OR=9.14, 95%CI 3.05 to 27.45, P<0.000 1), cold environment (OR=2.13, 95%CI 1.32 to 3.44, P=0.002), habit of sitting cross-legged (OR=7.56, 95%CI 1.74 to 32.79, P=0.007) were risk factors for knee osteoarthritis among the Chinese population.Conclusion Controlling and reducing weight, preventing knee injuries, keeping joint warm, controlling alcohol consumption, improving humid and cold living environment, appropriately reducing heavy physical labor, reducing joint weight, and changing the habit of sitting cross-legged can prevent the occurrence of knee osteoarthritis.