Table 3 The relation between laboratory and imaging findings and prolonged recovery period in bivariate analysis, in the enrolled patients, Tehran, Iran, 2020

Normal CT scan

 Yes

17 (8.8%)

4 (2.5%)

3.75 (1.23–11.37)

0.02**

 No

177 (91.2%)

156 (97.5%)

Lactate dehydrogenase (units/L)

 < 480

29 (37.2%)

35 (30.4%)

1.35 (0.74–2.48)

0.33

 ≥ 480

49 (62.8%)

80 (69.6%)

Creatine phosphokinase (units/L)

 < 195

44 (75.9%)

75 (78.9%)

0.84 (0.39–1.82)

Referent

 ≥ 195

14 (24.1%)

20 (21.1%)

0.66

AST (units/L)

 < 41

63 (63.6%)

84 (67.2%)

0.85 (0.49–1.49)

0.58

 ≥ 41

36 (36.4%)

41 (32.8%)

ALT (units/L)

 < 41

63 (64.9%)

86 (68.8%)

0.84 (0.48–1.48)

0.55

 ≥ 41

34 (35.1%)

39 (31.2%)

Erythrocyte sedimentation rate (ESR) (mm/h)

 ≤ 60

57 (41.6%)

44 (30.1%)

1.65 (1.01–2.70)

0.05**

 ≥ 61

80 (58.4%)

102 (69.9%)

C-reactive protein (CRP) (mg/L)

 ≤ 90

96 (62.3%)

83 (52.9%)

1.48 (0.94–2.32)

0.09**

 ≥ 91

58 (37.7%)

74 (47.1%)

Platelet (cell/mm³)

 < 150,000

41 (24.7%)

39 (23.6%)

0.94 (0.57–1.56)

0.82

 ≥ 150,000

125 (75.3%)

126 (76.4%)

White blood cell (WBC) (cell/mm³)

 < 4000

26 (15.8%)

23 (14.1%)

0.10 (0.54–1.85)

0.99

 4000–9999

117 (70.9%)

103 (63.2%)

1.90 (0.88–4.11)

0.10

 ≥ 10,000

22 (13.3%)

37 (22.7%)

Lymphocyte count (cell/ mm³)

 ≤ 1000

56 (44.4%)

64 (46.4%)

1.08 (0.67–1.76)

0.75

 > 1000

70 (55.6%)

74 (53.6%)