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Table 1 Illustrate the incidence and the relation between the patients’ sex, main complaint at the time of CTPA scanning, rising D-dimer level, CT interpretation according to RSNA criteria, and the progressive CT findings between the negative and positive pulmonary embolism groups under study

From: CT pulmonary angiography in COVID-19 pneumonia: relationship between pulmonary embolism and disease severity

   Negative CT pulmonary angiography Positive CT pulmonary angiography Total Pearson Chi-Square value P value Sig.
Sex Female (No/percentage) 26 (46.4%) 12 (30%) 38 (39.6%) 1.317 0.251 NS
Male (No/percentage) 30 (53.6%) 28 (70%) 58 (60.4%)
Total 56 40 96    
The main complaint at the time of CTPA Desaturation 10 (17.9%) 18 (45%) 28 (29.2%) 4.160 0.041* S
Hemoptysis 2 (3.6%) 12 (30%) 14 (14.6%) 6.542 0.011* S
Progressive dyspnea 36 (64.3%) 28 (70%) 64 (66.7%) 0.171 0.679 NS
Tachycardia 4 (7.1%) 10 (25%) 14 (14.6%) 2.987 0.084 NS
Chest pain 10 (17.9%) 18 (45%) 28 (29.2%) 4.160 0.041* S
Rising D-dimer level   6 (10.7%) 32 (80%) 38 (39.6%) 23.419 0.000^ HS
NCCT interpretation by RSNA Typical 34 (60.7%) 22 (55%) 56 (58.3%) 5.094 0.165 NS
Indeterminate 12 (21.4%) 12 (30%) 24 (25%)
Atypical 2 (3.6%) 6 (15%) 8 (8.3%)
Negative 8 (14.3%) 0 (0%) 8 (8.3%)
Total 56 40 96
Progressive NCCT   4 (7.1%) 36 (90%) 40 (41.7%) 32.953 0.000^ HS
  1. NCCT Non-contrast CT
  2. *P value < 0.05 is considered significant
  3. ^P value < 0.01 is considered highly significant