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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 (%)    <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 (%)    <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 (%)    <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 (%)    <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)  
  1. aResponders: patients who completely answered both the 4 and 12 months questionnaires; Non reseponders: patients who received both the 4 and 12 months questionnaire but did not completely answered one or both questionnaires
  2. bASA, American Society of Anaesthesiologists
  3. *independent t-test
  4. **Pearson chi-squared test