Table 1.
Baseline Epidemiological Characteristics of Confirmed Cases and Clinically Diagnosed Cases in Wuhan
| Baseline Characteristics | No. Confirmed Cases (%) | No. Clinically Diagnosed Cases (%) |
|---|---|---|
| Total | 29886 | 21960 |
| Age, median (IQR a), years | 57.0(44.0–67.0) | 54.0(41.0–65.0) |
| Age group, years | ||
| 0~ | 186(0.6) | 220(1.0) |
| 10~ | 226(0.8) | 173(0.8) |
| 20~ | 1371(4.6) | 1412(6.4) |
| 30~ | 3720(12.4) | 3280(14.9) |
| 40~ | 4435(14.8) | 3736(17.0) |
| 50~ | 6347(21.2) | 4851(22.1) |
| 60~ | 7678(25.7) | 5007(22.8) |
| 70~ | 3979(13.3) | 2285(10.4) |
| 80~ | 1671(5.6) | 839(3.8) |
| ≥90 | 217(0.7) | 121(0.6) |
| Missing | 56(0.2) | 36(0.2) |
| Sex | ||
| Male | 15059(50.4) | 10165(46.3) |
| Female | 14827(49.6) | 11795(53.7) |
| Occupation | ||
| Child and student | 439(1.5) | 482(2.2) |
| Cadre | 1489(5.0) | 1119(5.1) |
| Freelancer | 203(0.7) | 194(0.9) |
| Physical labor | 712(2.4) | 641(2.9) |
| Public service staff | 1816(6.1) | 1477(6.7) |
| Housework or unemployed | 5684(19.0) | 5401(24.6) |
| Retirees | 10012(33.5) | 6114(27.8) |
| Farmer or pastoral worker | 1390(4.7) | 1002(4.6) |
| Healthcare worker | 1188(4.0) | 1211(5.5) |
| Missing | 6953(23.3) | 4319(19.7) |
| Case severity | ||
| Mild | 18192(60.9) | 11326(51.6) |
| Moderate | 4148(13.9) | 7446(33.9) |
| Severe | 5278(17.7) | 2749(12.5) |
| Critical | 823(2.8) | 315(1.4) |
| Missing | 1445(4.8) | 124(0.6) |
| Death or not | ||
| Not | 28322(94.8) | 21703(98.8) |
| Yes | 1564(5.2) | 257(1.2) |
| Date of onset | ||
| Before Dec 31, 2019 | 135(0.5) | 92(0.4) |
| Jan 1–10, 2020 | 591(2.0) | 388(1.8) |
| Jan 11–20, 2020 | 2921(9.8) | 1981(9.0) |
| Jan 21–31, 2020 | 13502(45.2) | 7741(35.3) |
| Feb 1–10, 2020 | 9600(32.1) | 8583(39.1) |
| Feb 11–20, 2020 | 2758(9.2) | 3172(14.4) |
| Feb 21–24, 2020 | 355(1.2) | —— |
| Missing | 24(0.1) | 3(0.0) |
| Days from onset to diagnosis, median (IQR) | 9.0 (5.0–13.0) | 11.0 (5.0–18.0) |
| District of residence | ||
| City centre | 23768(79.5) | 17003(77.4) |
| Suburb | 5577(18.7) | 4755(21.7) |
| Outside Wuhan | 339(1.1) | 173(0.8) |
| Missing | 202(0.7) | 29(0.1) |
| Level of hospital | ||
| Tertiary hospital | 21622(72.3) | 18598(84.7) |
| Primary and secondary hospital | 8166(27.3) | 3362(15.3) |
| Missing | 98(0.3) | —— |
aIQR interquartile range