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Table 1 The characteristics of COVID-19 in middle-aged (40–59 years) patients without comorbidities on admission

From: Risk factors for severe COVID-19 in middle-aged patients without comorbidities: a multicentre retrospective study

Characteristics

All patients N = 119

Non-severe N = 101

Severe N = 18

p valuea

Median age (IQR),yr

50 (45,54)

50 (45,55)

51(46,54)

0.970

Gender

 Female

42 (35.3)

37 (36.6)

5 (27.8)

NS

 Male

77 (64.7)

64 (63.4)

13 (72.2)

0.469

Fever

38.5 (38.0,39.0)

38.5 (38.0,39.0)

39.0 (38.5,39.9)

0.002

 37.3–38.0 ℃

27 (22.7)

25 (24.8)

2 (11.1)

0.203

 38.1–39.0 ℃

56 (47.1)

47 (46.5)

9 (50.0)

0.786

  > 39℃

22 (18.5)

15 (14.9)

7 (38.9)

0.016

Dry cough

76 (63.9)

68 (67.3)

8 (44.4)

0.063

Expectoration

38 (31.9)

28 (27.7)

10 (55.6)

0.020

Myalgia

7 (5.9)

4 (4.0)

3(16.7)

0.035

Fatigue

36 (30.3)

29(28.7)

7(38.9)

0.387

Dyspnea

52 (43.7)

38(37.6)

14(77.8)

0.002

Headache

5 (4.2)

5 (5.0)

0 (0)

0.229

Diarrhea

13 (10.9)

13 (12.9)

0 (0)

0.034

Heart rate, median (IQR),bpm

86 (80,96)

85 (80,96)

87 (84,96)

0.509

Respiratory rate, median (IQR)

20 (20,24)

20 (20,23)

21 (20,28)

0.095

Pulse oximetry %, median (IQR)

95 (86,98)

96 (93,98)

87 (80,93)

0.232

PaO2/FiO2 ratio, median (IQR)

362 (246,380)

383 (345,420)

313 (180,370)

0.423

Time from symptom onset to admission, median (IQR),d

7 (5,10)

6 (4,9)

9 (6,13)

0.797

  1. Values are numbers (percentages) unless stated otherwise
  2. COVID-19 coronavirus disease 2019, IQR interquartile range
  3. ap values indicate differences between severe and non-severe. p < 0.05 was considered statistically significant