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Table 3 Distribution of patients with vascular angiopathy and morphological CT signs according to low versus high TOS and negative versus positive pulmonary embolism with significant statistical analysis

From: COVID-19-induced vascular angiopathy: CTPA signs in critically ill patients other than acute pulmonary embolism and high-lung opacity scores

Radiological signs Low TOS (≤ 10)
(Na = 18 patients)
High TOS (> 10)
(N = 55 patients)
Negative PEa Positive PE (N=3) Negative PE Positive PE
(N=21)
Vascular angiopathy CTPA signs
1. Pulmonary “vascular enlargement” Present (T=57) 13 0 34 10 (overlap)
Absent 2 3 0 11
X2a 0.4794
P value 0.488706 (>0.05) → No significant relation to TOS
2. Pulmonary hypertension Present (T=14) 0 3 (overlap) 0 11 (overlap)
Absent 15 0 34 10
X2 0.0972
P value 0.755197 (>0.05) → No significant relation to TOS
3. Vascular “tree in bud” Present (T=10) 2 0 8 0
Absent 13 3 26 21
X2 0.1353
P value 0.712997 (>0.05) → No significant relation to TOS
4. Pulmonary infarction Present (T=3) 0 0 0 3 (overlap)
Absent 15 3 34 18
X2 0.9868
P value 0.3205 (>0.05) → No significant relation to TOS
Other morphological CT signs:
1. Crazy-paving Present (T=44) 6 2 18 18
Absent 9 1 16 3
X2a 2.5001
P value 0.1138 (>0.05) → No significant relation to TOS
2. Consolidations Present (T=62) 12 3 34 13
Absent 3 0 0 8
X2a 0.0477
P value 0.8271 (>0.05) → No significant relation to TOS
3 Pleural effusion Present (T=6) 0 1 1 4
Absent 15 2 33 17
X2a 0.2247
P value 0.6355 (>0.05) → No significant relation to TOS
4. Enlarged L.Ns Present (T=19) 0 1 15 3
Absent 15 2 19 18
X2a 4.6925
P value 0.0303 (<0.05) → Significant relation to TOS
  1. aTOS total opacity score, N total number of patients, PE pulmonary embolism, X2 chi-squared statistical test, P value statistical significant relation when < 0.05