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Table 1 Study characteristics

From: Comparison of complications in one-stage bilateral total knee arthroplasty with and without drainage

Study Study design Sample size Mean age (years) Gender (M/F) BMI (kg/m 2 ) Thrombosis prevention Follow-up(month)
Patients Knees OA
Kim YH et al. 1998 [10] RCT 69 138 84.1% 64 (37–80) 7/62 26 NR 16 (14–28)
Xiong MY et al. 2008 [11] RCT 16 32 62.5% 65 (45–84) 7/9 26 Aspirin 12
Fan Y et al. 2013 [12] RCT 40 80 100% 66.5 (49–75) 16/24 NR LMWH 12
  1. RCT randomized controlled trials, OA osteoarthritis, M/F male/female, BMI body mass index, LMWH low molecular weight heparin, NR not reported.