Table 2.
Patient characteristics
| Variable | No. (%) | p value | |
|---|---|---|---|
| Year | 2019 | 2020 | |
| n = | 1027 | 888 | 0.003 |
| Sex; m:f | 510 : 517 | 468 : 420 | 0.18 |
| Age, y, mean ± SD | 35 ± 19 | 36 ± 20 | 0.24 |
| Children, < 18 years | 174 (16.9) | 151 (17.0) | 0.97 |
| Elderly, ≥ 75 years | 41 (4.0) | 43 (4.8) | 0.37 |
| Obesity, BMI > 30 kg/m2 | 138 (15.3) | 132 (17.0) | 0.36 |
| Comorbidity1 | 0.95 | ||
| None, CCI 0 | 831 (84.0) | 710 (83.7) | |
| Minor, CCI 1–2 | 104 (10.5) | 93 (11.0) | |
| Moderate, CCI 3–4 | 31 (3.1) | 28 (3.3) | |
| Major, CCI ≥ 5 | 23 (2.3) | 17 (2.0) | |
| ASA score | 0.41 | ||
| 1 | 545 (54.2) | 447 (51.9) | |
| 2 | 375 (37.3) | 328 (38.1) | |
| 3 | 75 (7.5) | 80 (9.3) | |
| 4 | 10 (1.0) | 6 (0.7) | |
| COVID-19 risk group2 | 120 (11.7) | 112 (12.6) | 0.54 |
mean ± SD, mean ± standard deviation; ASA, American Association of Anesthesiologists Score; CCI, Charlson comorbidity index; 1according to the Charlson comorbidity index; 2the COVID-19 risk group was defined as age ≥ 70 years, or risk factors such as diabetes, immunosuppression, obstructive pulmonary disease, or CCI ≥ 3