Table 2.
Clinical baseline characteristics at the two institutions.
| Variable | Institution 1 (n = 221) | Institution 2 (n = 113) | p-value |
|---|---|---|---|
| Age, (years) | 72 (66–80) | 69 (63–78) | 0.055 |
| BMI, (kg/m2) | 21.36 (19.51–24.42) | 22.48 (20.24–24.77) | 0.084 |
| Gender, n (%) | 0.173 | ||
| Female | 157 (71.0) | 72 (63.7) | |
| Male | 64 (29.0) | 41 (36.3) | |
| ASA score, n (%) | <0.001 | ||
| I or II | 154 (69.7) | 101 (89.4) | |
| III or above | 67 (30.3) | 12 (10.6) | |
| Anesthesia, n (%) | <0.001 | ||
| General anesthesia | 94 (42.5) | 3 (2.7) | |
| Other anesthesia method | 127 (57.5) | 110 (97.3) | |
| Fracture type, n (%) | 0.705 | ||
| Intertrochanteric fracture | 93 (42.1) | 50 (44.2) | |
| Femoral neck fracture | 128 (57.9) | 63 (55.8) | |
| Surgical procedure, n (%) | 0.901 | ||
| PFNA | 93 (42.1) | 50 (44.2) | |
| Hip arthroplasty | 110 (49.8) | 55 (48.7) | |
| Cannulated screws | 18 (8.1) | 8 (7.1) |
BMI, body mass index; ASA, American Society of Anesthesiologists; PFNA, proximal femoral nail antirotation.