Baseline characteristics of patients included in the study
| Characteristic | No. (%) of patients* | Standardized difference (hospitalized – not hospitalized) | ||
|---|---|---|---|---|
| All patients n = 36 323 | Hospitalized n = 2583 | Not hospitalized n = 33 740 | ||
| Age, yr, median (IQR) | 45 (31–58) | 64 (54–77) | 43 (30–56) | 1.175 |
| No. of comorbidities, median (IQR)† | 1 (0–3) | 3 (2–6) | 1 (0–3) | 0.935 |
| Male | 17 428 (48.0) | 1453 (56.3) | 15 975 (47.3) | 0.179 |
| Female | 18 895 (52.0) | 1130 (43.7) | 17 765 (52.7) | −0.179 |
| Asthma | 5460 (15.0) | 480 (18.6) | 4980 (14.8) | 0.103 |
| Cancer | 1453 (4.0) | 297 (11.5) | 1156 (3.4) | 0.311 |
| Chronic heart failure | 831 (2.3) | 275 (10.6) | 556 (1.6) | 0.381 |
| COPD | 1959 (5.4) | 457 (17.7) | 1502 (4.5) | 0.432 |
| Diabetes | 5273 (14.5) | 940 (36.4) | 4333 (12.8) | 0.568 |
| Hypertension | 8994 (24.8) | 1477 (57.2) | 7517 (22.3) | 0.763 |
| Hospitalized for COVID-19 | 2583 (7.1) | 2583 (100) | 0 (0) | NA |
| Died from COVID-19 | 906 (2.5) | 543 (21.0) | 364 (1.1) | 0.67 |
Note: COPD = chronic obstructive pulmonary disease, IQR = interquartile range, NA = not applicable.
↵* Unless otherwise stated.
↵† The variable “no. of comorbidities” accounts for the following conditions (see Model development under Methods): acute myocardial infarction, arrhythmia, arthritis, asthma, cancer, chronic heart failure, colitis, COPD, coronary disease, diabetes, hypertension, osteoarthritis, osteoporosis and kidney disease.