Table 2 Patient background and the classification of fracture type
| Â | Gamagori City Hospital | Tsushima City Hospital | Nagoya Daini Red Cross Hospital | Overall | P-value | |
|---|---|---|---|---|---|---|
Mean age at time of injury (95% CI) | 81.8 (70.4, 93.2) | 81.4 (70.9, 91.9) | 80.1 (67.6, 92.6) | 81.1 (69.6, 92.6) | < 0.001* | |
Sex (male/female) | 340/1156 | 287/829 | 566/1673 | 1193/3658 | 0.13 | |
Fracture type | Garden (I,II/III,IV) | 275/450 | 191/324 | 528/897 | 994/1671 | < 0.001* |
AO31- (A1/A2/A3) | 489/253/54 | 383/185/48 | 509/322/76 | 1381/760/178 | 0.09 | |
Greater trochanteric fracture | 96 | 74 | 88 | 258 | < 0.001* | |
Number of X-rays | 1617 | 1205 | 2420 | 5242 | Â | |
Complications | Pathologic fractures due to tumors | 3 | 2 | 7 | 12 | 0.80 |
Osteoarthritis of the hip | 26 | 15 | 43 | 84 | 0.50 | |
Hip implants on the opposite side | 132 | 125 | 195 | 452 | 0.05 | |
Spine implants | 7 | 4 | 35 | 46 | < 0.001* | |
Complicated pubic or sciatic fracture | 23 | 17 | 53 | 93 | 0.12 | |