Table 1 Baseline characteristics for responders and non-respondersa
From: Quality of life following hip fractures: results from the Norwegian hip fracture register
|  | Responders (n = 10325) | Non-responders (n = 19672) | P value |
|---|---|---|---|
Mean age (yrs) (SD) | 77.3 (11.7) | 79.8 (11.7) | <0.001* |
Female (%) | 7471 (72.4) | 14420 (73.3) | 0.097** |
ASAb-class (%) | Â | Â | <0.001** |
 1 | 1402 (13.6) | 1420 (7.2) |  |
 2 | 4525 (43.8) | 7262 (36.9) |  |
 3 | 3964 (38.4) | 9878 (50.2) |  |
 4 | 261 (2.5) | 791 (4.0) |  |
 5 | 1 (0) | 11(0.1) |  |
 Data missing | 172 (1.7) | 310 (1.6) |  |
Cognitive impairment (%) | Â | Â | <0.001** |
 No | 8267 (80.1) | 12581 (64.9) |  |
 Yes | 834 (8.1) | 4290 (22.1) |  |
 Uncertain | 659 (6.4) | 2090 (10.8) |  |
 Data missing | 565 (5.5) | 431 (2.2) |  |
Fracture type (%) | Â | Â | <0.001** |
 Femoral neck fracture | 5639 (54.6) | 10236(52.0) |  |
 Trochanteric fracture | 3706 (35.9) | 7635 (38.8) |  |
 Subtrochanteric fracture | 875 (8.5) | 1586 (8.1) |  |
 Other/missing | 105 (1.0) | 215 (1.1) |  |
Primary operation (%) | Â | Â | <0.001** |
 Screws/pins | 2643 (25.6) | 4638 (23.6) |  |
 Hemiarthroplasty | 2567 (24.9) | 5161 (26.2) |  |
 Total hip arthroplasty | 382 (3.7) | 280 (1.4) |  |
 Sliding hip screw | 3154 (30.5) | 6466 (32.9) |  |
 Intramedullary nail | 1249 (12.1) | 2539 (12.9) |  |
 Other | 330 (3.2) | 588 (3.0) |  |