Table 1 Baseline Epidemiological Characteristics of Confirmed Cases and Clinically Diagnosed Cases in Wuhan

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)

——