Table 1 Demographic and Epidemiological Characteristics of COVID-19 Patients with Different BMI

Age(years)

43.3(15.7)

46.3(13.3)

0.028

Sex

< 0.001

 men

97(36.2%)

119(63.6%)

 women

171(63.8%)

68(36.4%)

BMI (kg/m²)

21.62(20.20–22.86)

26.12(24.69–27.92)

< 0.001

 Exposure to Wuhan

122(45.5%)

84(44.9%)

0.899

 Contact with confirmed or suspected patients

130(48.5%)

76(40.6%)

0.097

 Familial cluster

93(34.7%)

61(32.6%)

0.644

Current smoking

14(5.2%)

20(10.7%)

0.029

 Any

67(25.0%)

82(43.9%)

< 0.001

 Hypertension

26(9.7%)

48(25.7%)

< 0.001

 Diabetes

19(7.1%)

21(11.2%)

0.125

 Heart disease

5(1.9%)

5(2.7%)

0.563

 Chronic liver disease

8(3.0%)

14(7.5%)

0.028

 Chronic renal disease

1(0.4%)

2(1.1%)

0.753

 Cancer

3(1.1%)

3(1.6%)

0.977

 COPD

0(0.0%)

1(0.5%)

0.411

 Immunosuppression

0(0.0%)

1(0.5%)

0.411

 Fever

213(79.5%)

164(87.7%)

0.022

 Highest temperature(°C)

0.085

   < 37.3

55(20.5%)

23(12.3%)

  37.3–38.0

92(34.3%)

80(42.8%)

  38.1–39.0

101(37.7%)

72(38.5%)

   > 39.0

20(7.5%)

12(6.4%)

 Cough

165(61.6%)

136(72.7%)

0.013

 Sputum production

87(32.5%)

79(42.2%)

0.033

 Sore throat

48(17.9%)

20(10.7%)

0.034

 Nasal obstruction

20(7.5%)

5(2.7%)

0.027

 Myalgia

32(11.9%)

20(10.7%)

0.681

 Fatigue

58(21.6%)

35(18.7%)

0.787

 GI symptoms^a

36(13.4%)

30(16.0%)

0.437

 Headache

20(7.5%)

23(12.3%)

0.083

Incubation period (days)

7(4–11) (n = 86)

7(4–10) (n = 46)

0.578

Days from illness onset to first medical visit(days)

2(1–5)

3(1–5)

0.143

Days from illness onset to confirm the diagnosis(days)

5(3–8)

5(3–8)

0.393

Days from illness onset to first hospitalization(days)

4(2–7)

4(3–8)

0.491

Clinical Type

0.004

 Mild/ Moderate

249(92.9%)

158(84.5%)

 Severe/ Critical

19(7.1%)

29(15.5%)