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Table 3 Comparison between COVID-19 patients with and without evidence of fibrosis. Non-fibrotic group (n =109); fibrotic group (n =101)

From: Predicting lung fibrosis in post-COVID-19 patients after discharge with follow-up chest CT findings

  The studied group, N = 210 Test p value
Non fibrotic, N = 109 Fibrotic, N = 101
Age (years)
 Mean ±SD 49.26±13.36 58.81±14.82 t test
4.91
<0.001
 Range 18–76 24–94
Sex
 Male 76 (69.7%) 73 (72.3%) X2
0.17
0.65
 Female 33 (30.3%) 28 (27.7%)
Severity score
 Mean ±SD 7.55±3.32 15.20±3.34 U
11.09
<0.001
 Range 1–14 9–20
Consolidation/crazy-paving score
 Mean ±SD 5.42±3.55 12.63±4.22 U
10.06
<0.001
 Range 0–15 5–20
Lymphopenia 64 (58.7%) 79 (78.2%) X2
9.2
0.002
Elevated high-sensitivity troponin 17 (15.6%) 28 (27.7%) X2
4.6
0.03
High ferritin levels 62 (56.9%) 81 (80.2%) X2
13.1
<0.001
Elevated CRP 90 (82.6%) 95 (94.1%) X2
6.6
0.01
Elevated d-dimer 87 (79.8%) 96 (95.0%) X2
10.9
0.001
Length of hospital stay
 Mean ±SD 8.56±7.03 23.26±20.89 U
8.26
<0.001
 Range 1–37 2–170
ICU admission
 No 102 (93.6%) 56 (55.4%) X2
40.9
<0.001
 Yes 7 (6.4%) 45 (44.6%)
Steroid
 No 27 (24.8%) 7 (6.9%) X2
12.3
<0.001
 Yes 82 (75.2%) 94 (93.1%)