Table 1 The characteristics of COVID-19 cases based on surveillanc data from January 19 to March 19 in 2020 in China
From: Risk factors for developing severe COVID-19 in China: an analysis of disease surveillance data
Variables | All cases, n (%) | Severe cases, n (%) |
|---|---|---|
Sex | ||
 Male | 6581 (52.0) | 965 (58.1) |
 Female | 6066 (48.0) | 697 (41.9) |
Age group, years | ||
 0–19 | 826 (6.5) | 6 (0.4) |
 20–39 | 4132 (32.7) | 253 (15.2) |
 40–59 | 5241 (41.4) | 686 (41.3) |
 ≥ 60 | 2448 (19.4) | 717 (43.1) |
Living area | ||
 Urban | 6923 (54.7) | 959 (57.7) |
 Rural | 5724 (45.3) | 703 (42.3) |
Regions | ||
 East | 4860 (38.4) | 590 (35.5) |
 Central | 5351 (42.3) | 730 (44.0) |
 West | 2436 (19.3) | 342 (20.6) |
From symptom onset to diagnosis, days | ||
 0–2 | 3811 (30.1) | 272 (16.4) |
 3–5 | 3610 (28.5) | 447 (26.9) |
 6–8 | 2583 (20.4) | 451 (27.1) |
 ≥ 9 | 2643 (20.9) | 492 (29.6) |
Underlying disease | ||
 No | 9664 (76.4) | 927 (55.8) |
 Yes | 2983 (23.6) | 735 (44.2) |
Exposure history | ||
 No | 1009 (8.0) | 215 (12.9) |
 Yes | 11 638 (92.0) | 1447 (87.1) |