Table 1 Characteristics at baseline among severe and non-severe COVID-19 patients.

From: The predictive value of serum level of cystatin C for COVID-19 severity

 

Total (n = 162)

Severe (n = 28)

Non-severe (n = 134)

P-value

Age, (y) mean ± SD

61.7 ± 13.5

70.1 ± 12.7

59.8 ± 13.0

 < 0.001

Male, n (%)

84 (51.9)

20 (71.4)

64 (47.8)

0.023

Current smoker, n (%)

17 (10.5)

2 (7.1)

15 (11.2)

0.766

Often drinker, n (%)

3 (1.9)

0

3 (2.2)

 > 0.999

Hypertension, n (%)

50 (30.9)

12 (42.9)

38 (28.4)

0.131

Diabetes, n (%)

30 (18.5)

7(25.0)

23 (17.2)

0.332

COPD, n (%)

12 (7.4)

4 (13.4)

8 (6)

0.258

Cardio-cerebrovascular disease, n (%)

23 (14.2)

8 (28.6)

15 (11.2)

0.017

Digestive disease, n (%)

15 (9.3)

1 (3.6)

14 (10.4)

0.433

Previous tumor, n (%)

13 (8.0)

3 (10.7)

10 (7.5)

0.847

Immunosuppresive, n (%)

3 (1.9)

1 (1.6)

2 (1.5)

 > 0.999

Wet market exposure, n (%)

2 (1.2)

1 (3.6)

1 (0.7)

0.772

Clinical manifestion

Fever, n (%)

114 (70.4)

19 (67.9)

95 (70.9)

0.749

Dry cough, n, (%)

103 (63.6)

19 (67.9)

84 (62.7)

0.605

Productive cough, n (%)

23 (14.2)

2 (7.1)

21 (15.7)

0.38

Fatigue, n (%)

56 (34.6)

9 (32.1)

47 (35.1)

0.767

Musle or joint ache, n (%)

21(13.0)

2(7.1)

19 (14.2)

0.485

Thoracalgia, n (%)

31(19.1)

6(21.4)

25(18.7)

0.735

Sore throat, n (%)

23 (14.2)

4 (14.3)

19 (14.2)

 > 0.999

Diarrhea, n (%)

12 (7.4)

3 (10.7)

9 (6.7)

0.735

Catarrh, n (%)

6 (3.7)

0

6 (4.5)

0.591

Anorexia, n (%)

47 (29.0)

28 (28.6)

39 (29.1)

0.955

Short of breath, n (%)

65 (40.1)

15 (53.6)

50 (37.3)

0.11

Headache, n (%)

19 (11.7)

3 (10.7)

16 (11.9)

 > 0.999

Total symptoms, (IQR)

3 [2–4]

3 [2–4]

3 [2–4]

0.815

Regular blood test

WBC × 109/L (IQR)

5.4 [4.4–7.3]

5.2 [3.9–10.0]

5.4 [4.4–7.1]

0.643

Decreased WBC, n (%)

10 (6.2)

4 (14.3)

6 (4.5)

0.126

Lymphocytes × 109/L (IQR)

1.4 [0.9–1.7]

0.8 [0.6–1.4]

1.4 [1.1–1.7]

 < 0.001

Decreased lymphocytes, n (%)

53 (32.7)

18 (64.3)

35 (26.1)

0.001

sCys C (mg/L)

1.08 [0.94–1.28]

1.28 [1.05–1.83]

1.07 [0.92–1.22]

0.001

Bun (mmol/L)

4.4 [3.4–5.5]

5.1 [3.8–8.4]

4.3 [3.9–5.4]

0.014

sCr (umol/L)

74 [64–87]

83 [63–107]

74 [64–84]

0.042

LDH (U/L)

197 [164–264]

271 [203–338]

187 [160–244]

 < 0. 001

Increased LDH, n (%)

50 [30.9]

17 [60.7]

33 [24.6]

 < 0. 001

CT findings, n (%)

   

0.024

Unilateral pneumonia, n (%)

25 (15.4)

2 (7.1)

23 (17.2)

 

Bilateral pneumonia, n (%)

85(52.5)

11 (39.3)

74 (55.2)

 

Multiple mottling and Ground-glass opacity, n (%)

52 (32.1)

15 (53.6)

37 (27.6)

 
  1. Legend and abbreviations: COVID-19 = coronavirus disease 2019; SD = Standard deviation; COPD = Chronic obstructive pulmonary disease; IQR = Interquartile range; WBC = white blood cell (109/L; reference range 3.5–9.5); Lymphocytes (× 109/L; reference range 1.1–3.2); sCys C = serum cystatin C (mg/L, reference range 0.55–1.09); Bun = blood urea nitrogen (mmol/L; reference range 2.9–8.2), sCr = serum creatinine (μmol/L; reference range 44–133), LDH = Lactate dehydrogenase (U/L; reference range 109–245); CT = Computed tomography