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Table 2 Univariate Cox regression analysis

From: DAIR (Debridement, Antibiotics and Implant Retention) less effective in hematogenous total knee arthroplasty infections

Variable HR (95% CI) p value
Age 1.05 (0.97–1.31) 0.24
Gender
 Male Ref  
 Female 1.02 (0.40–2.60) 0.97
Side
 Right Ref  
 Left 1.98 (0.79–4.96) 0.14
Smoker 3 (0.34–26.84) 0.33
Body mass index 0.91 (0.78–1.06) 0.23
Deyo-Charlson Index 0.958 (0.721–01.274) 0.77
ASA
 I Ref  
 II 0.34 (0.04–2.95) 0.33
 III 0.61 (0.08–5.02) 0.65
 IV 0 (0) 0.99
Comorbidities
 Diabetes mellitus 1.62 (0.45–5.85) 0.46
 Obesity (BMI > 30 kg/m2) 0.83 (0.33–2.08) 0.70
 Malignancy 0.25 (0.03–1.98) 0.19
 Hypertension 2.86 (0.90–9.11) 0.07
 Cardiac disease 0.70 (0.09–5.37) 0.73
 Chronic pulmonary disease 0.63 (0.21–1.92) 0.42
 Chronic renal failure 1.66 (0.47–5.94) 0.43
 Vascular disease 0.87 (0.25–3.04) 0.83
 Thyroid disease 6.25 (0.70–55.92) 0.10
 Rheumatoid arthritis 1.24 (0.28–5.54) 0.78
 Immunosuppressive therapy 1.59 (0.45–5.65) 0.48
 Steroid therapy 0.86 (0.32–2.30) 0.77
 Repetitive urine infection 1.70 (0.48–6.06) 0.41