Table 3 The demographic characteristics of the patients who underwent routine primary THA
Baseline characteristic | Drain use (n = 4943) | No drain (n = 1724) | All (n = 6667) |
|---|---|---|---|
Demographic characteristics | |||
 Age (X ± S) | 58.31 ± 13.62 | 58.61 ± 14.34 | 58.39 ± 13.81 |
 Female, N (%) | 2654 (53.69%) | 988 (57.31%) | 3642 (54.63%) |
 BMI (kg/m2) | 23.69 ± 3.37 | 23.79 ± 4.72 | 23.71 ± 4.41 |
 Diagnosis, N (%) | |||
  OA | 4033 (81.59%) | 1392 (80.74%) | 5425 (81.37%) |
  Inflammatory arthritis | 199 (4.03%) | 67 (3.89%) | 266 (3.99%) |
  Fracture of femoral neck | 711 (14.38%) | 265 (15.37%) | 976 (14.64%) |
Comorbidities, N (%) | |||
 Hypertension | 624 (12.62%) | 262 (15.20%) | 886 (13.29%) |
 Type 2 diabetes | 171 (3.46%) | 56 (3.25%) | 227 (3.40%) |
 CHD | 55 (1.13%) | 32 (1.86%) | 87 (1.30%) |
 COPD | 19 (0.38%) | 7 (0.41%) | 26 (0.39%) |