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两组患者的临床资料
Clinical data of patients
| Items | PFNA (n=28) | ZNN (n=31) | P |
| PFNA, proximal femoral nail anti-rotation; ZNN, zimmer natural nail. | |||
| Average age/years | 81.9±7.1 | 79.0±6.7 | 0.113 |
| Male/female | 8/20 | 11/20 | 0.570 |
| Right/left | 16/12 | 13/18 | 0.243 |
| Time from admission to operation/d | 4.6±2.1 | 4.5±2.0 | 0.770 |
| Classification of fracture, Ⅰ/Ⅱ/Ⅲ | 12/15/1 | 15/15/1 | 0.913 |
