Table 1 Demographics and epidemiological characteristics of patients with COVID-19

Age, years, Mean (SD)

50 (14)

46 (12)

52 (15)

0.030

 Range

21–83

21–73

27–83

 ≥ 29

6 (6.6%)

2 (5.7%)

4 (7.1%)

0.410

 30–39

20 (22.0%)

10 (28.6%)

10 (17.9%)

 40–49

15 (16.5%)

8 (22.9%)

7 (12.5%)

 50–59

25 (27.5%)

9 (25.7%)

16 (28.6%)

 60–69

19 (20.9%)

5 (14.3%)

14 (25.0%)

  ≥ 70

6 (6.6%)

1 (2.9%)

5 (8.9%)

Sex

0.670

 Female

39 (42.9%)

16 (47.2%)

23 (41.1%)

 Male

52 (57.1%)

19 (52.8%)

33 (58.9%)

Chronic medical illness

31 (34.1%)

8 (22.9%)

23 (41.1%)

0.074

 Hypertension

12 (13.2%)

2 (5.7%)

10 (17.9%)

0.120

 Cardiovascular disease

5 (5.5%)

1 (2.9%)

4 (7.1%)

0.645

 Diabetes

5 (5.5%)

0 (0.0%)

5 (8.9%)

0.152

 Respiratory system disease

7 (7.7%)

1 (2.9%)

6 (10.7%)

0.243

 Thyroid disease

2 (2.2%)

0 (0.0%)

2 (3.6%)

0.521

 Chronic liver disease

5 (5.5%)

1 (2.9%)

4 (7.1%)

0.645

 Chronic kidney disease

3 (3.3%)

1 (2.9%)

2 (3.6%)

1.000

 Digestive system disease

2 (2.2%)

1 (2.9%)

1 (1.8%)

1.000

 Malignant tumor

1 (1.1%)

1 (2.9%)

0 (0.0%)

0.385

 Other

6 (6.6%)

1 (2.9%)

5 (8.9%)

0.400

 Live or travel history in epidemic area^a

53 (58.2%)

0 (0.00%)

53 (94.6%)

< 0.001

 Time of out of epidemic area to onset, days, n = 53, Median (IQR), [range]

5 (2–10) [1–34]

NA

5 (2–10) [1–34]

NA

 Close contacts with COVID-19 patient

42 (46.2%)

24 (68.6%)

18 (32.1%)

0.001

 Time of contacted COVID-19 patient to onset, days, n = 26, Median (IQR) [range]

26/42; 8 (4–13) [1–22]

17/24; 6 (4–15) [1–22]

9/18; 8 (5–16) [2–20]

0.570

 Cluster outbreak

53 (58.2%)

27 (77.1%)

26 (46.4%)

0.004