Table 1 Characteristics of patients with laboratory-confirmed COVID-19 in Shijiazhuanga
Characteristic | Overall | Immediately confirmed cases | Later becoming symptomatic cases | P value | |
|---|---|---|---|---|---|
Patients | Â | 869 (100.0) | 679 (78.1) | 190 (21.9) | Â |
Sex | Male | 349 (40.2) | 265 (39.1) | 84 (44.2) | 0.234 |
| Â | Female | 519 (59.8) | 413 (60.9) | 106 (55.8) | Â |
Age (years) | Â | 47.0 (30.0,60.0) | 47.0 (31.0,60.0) | 45.0 (24.5,59.8) | <0.001 |
Age group (years) | 0–19 | 142 (16.3) | 99 (14.6) | 43 (22.6) | 0.055†|
|  | 20–39 | 231 (26.6) | 188 (27.7) | 43 (22.6) |  |
|  | 40–59 | 272 (31.3) | 216 (31.8) | 56 (29.5) |  |
|  | 60–79 | 203 (23.4) | 159 (23.4) | 44 (23.2) |  |
| Â | 80+ | 21 (2.4) | 17 (2.5) | 4 (2.1) | Â |
Centralized quarantine | No | 454 (52.2) | 309 (45.5) | 145 (76.3) | <0.001 |
| Â | Yes | 415 (47.8) | 370 (54.5) | 45 (23.7) | Â |
Cases per period | 2–5 Jan | 33 (3.8) | 31 (4.6) | 2 (1.1) | 0.007 |
|  | 6–9 Jan | 139 (16.0) | 108 (15.9) | 31 (16.3) |  |
|  | 10–19 Jan | 607 (69.9) | 480 (70.7) | 127 (66.8) |  |
|  | 20 Jan–14 Feb | 90 (10.4) | 60 (8.8) | 30 (15.8) |  |