Table 1 Comparison of baseline characteristics between patients with no COVID-19 period and COVID-19 pandemic groups
| Â | no COVID-19 pandemic (1149) | COVID-2019 pandemic (1096) | OR (95% CI) | P* |
|---|---|---|---|---|
Age, y (mean SD) | 76.35 ± 6.40 | 76.14 ± 6.32 |  | 0.990 |
Female, n (%) | 567 (49.34) | 556 (50.72) | 1.06 (0.90–1.25) | 0.513 |
BMI ≥ 24 kg/m, n (%) | 369 (32.11) | 330 (30.11) | 0.91 (0.76–1.09) | 0.305 |
Current smoking, n (%) | 299 (26.02) | 298 (27.19) | 1.06 (0.88–1.28) | 0.532 |
Hypertension, n (%) | 373 (32.46) | 352 (32.12) | 0.98 (0.83–1.78) | 0.861 |
Diabetes, n (%) | 317 (27.59) | 301 (27.46) | 0.99 (0.83–1.20) | 0.947 |
Hyperlipidemia, n (%) | 588 (51.17) | 533 (48.63) | 0.903 (0.77–1.07) | 0.228 |
Dementia, n (%) | 38 (3.31) | 41 (3.74) | 1.14 (0.73–1.78) | 0.577 |
Heart disease, n (%) | 111 (9.66) | 105 (9.58) | 0.95 (0.63–1.42) | 0.949 |
Chronic renal disease, n (%) | 73 (6.35) | 88 (8.03) | 1.29 (0.93–1.78) | 0.124 |
Chronic liver disease, n (%) | 49 (4.26) | 54 (4.93) | 1.16 (0.78–1.73) | 0.453 |
COPD, n (%) | 115 (10.01) | 103 (9.40) | 0.93 (0.71–1.23) | 0.625 |
Fracture to operation duration, d (mean SD) | 5.31 ± 1.29 | 7.10 ± 3.52 |  |  < 0.001 |
ALB, g/l (mean SD) | 33.86 ± 4.96 | 34.01 ± 4.89 |  | 0.947 |
RBC, g/l (mean SD) | 135.53 ± 25.49 | 135.43 ± 26.07 |  | 0.996 |
Operating times, min (mean SD) | 80.77 ± 14.28 | 79.55 ± 15.14 |  | 0.879 |
Medical complication, n (%) | 144 (12.53) | 240 (21.90) | 1.96 (1.56–2.45) |  < 0.001 |
3-month dead, n (%) | 37 (3.22) | 57 (5.20) | 1.62 (1.06–2.47) | 0.025 |