Table 1 Comparison of the patient characteristics for hip fracture with and without low muscle mass
Variables | Low muscle mass N = 231 | Without low muscle mass N = 106 | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
Sex | male N = 61 | female N = 170 | total | male N = 6 | female N = 100 | total | male | female | total < 0.0001 |
Age (years) | 82.4 ± 7.0 | 84.3 ± 7.1 | 83.8 ± 7.1 | 80.5 ± 8.1 | 85.0 ± 6.9 | 84.7 ± 7.0 | 0.307 | 0.616 | 0.262 |
BMI (kg/m2) | 19.6 ± 3.1 | 19.1 ± 2.8 | 19.2 ± 2.9 | 23.5 ± 3.8 | 22.6 ± 3.0 | 22.7 ± 3.0 | 0.004 | 0.0001 | < 0.0001 |
Cognitive impairment (N, %) | 28, 45.9% | 85, 50.0% | 113, 48.9% | 1, 16.7% | 49, 46.2% | 50, 47.2% | 0.148 | 0.737 | 0.635 |
Home residence (N, %) | 46, 75.4% | 112, 65.9% | 158, 68.4% | 5, 83.3% | 76, 76.0% | 81, 76.4% | 0.664 | 0.081 | 0.132 |
Barthel index (before injury) | 70.5 ± 32.7 | 67.9 ± 30.7 | 68.5 ± 31.2 | 81.7 ± 27.3 | 76.7 ± 25.2 | 77.2 ± 25.3 | 0.426 | 0.02 | 0.019 |
GNRI | 90.2 ± 11.2 | 89.8 ± 9.5 | 89.9 ± 9.9 | 100.9 ± 11.4 | 99.0 ± 8.7 | 99.2 ± 8.8 | 0.03 | 0.0001 | < 0.0001 |
Osteoporosis (N, %) | 37, 60.7% | 145, 85.3% | 182, 78.8% | 2, 33.3% | 73, 72.3% | 75, 70.8% | 0.195 | 0.013 | 0.108 |
Femoral neck fracture (N, %) | 24, 39.3% | 87, 51.2% | 111, 48.1% | 5, 83.3% | 29, 29.0% | 34, 32.1% | 0.038 | 0.001 | 0.006 |
SMI (kg/m2) | 5.40 ± 0.70 | 4.68 ± 0.49 | 4.87 ± 0.64 | 7.08 ± 1.16 | 6.08 ± 0.57 | 6.14 ± 0.65 | < 0.0001 | < 0.0001 | < 0.0001 |