Radiology Research and Practice / 2023 / Article / Tab 4 / Research Article
Comparison of Chest Computed Tomography (CT) Imaging Patterns and Severity among COVID-19 Patients during the First and Fourth Waves in Addis Ababa, Ethiopia Table 4 Chest CT imaging patterns among COVID-19 patients with positive imaging findings.
Variables 1st wave 4th wave valueFrequency (%), n = 99 Frequency (%), n = 69 Number of features 0.095 Single features 12 (12.1%) 15 (21.7%) Multiple features 87 (87.9%) 54 (78.3%) Symmetry of involvement 0.021 Unilateral 2 (2%) 7 (10.1%) Bilateral 97 (98%) 62 (89.9%) Zonal distribution 0.004 Central 2 (2%) 7 (10.1%) Peripheral 58 (58.6%) 25 (36.2%) Diffuse 39 (39.4%) 37 (53.6%) Lobar involvement Right upper lobe 88 (88.9%) 7 (10.1%) <0.001 Right middle lobe 90 (90.9%) 5 (7.2%) <0.001 Right lower lobe 97 (98%) 37 (53.6%) <0.001 Left upper lobe 88 (88.9%) 9 (13%) <0.001 Left lower lobe 97 (98%) 32 (46.4%) <0.001 Ground glass appearance(GGO) 83 (83.8%) 54 (78.3%) 0.359 Central 3 (3.61%) 1 (1.85%) Peripheral 47 (56.63%) 23 (42.59%) Central and peripheral 33 (39.76%) 32 (55.56%) Broncho-vascular thickening 34 (34.3%) 26 (37.7%) 0.657 Crazy paving 6 (6.1%) 16 (23.2%) 0.001 Traction bronchiectasis 10 (10.1%) 0 (0%) Halo sign 10 (10.1%) 0 (0%) Consolidation 87 (87.9%) 36 (52.2%) <0.001 Central 1 (1.15%) 4 (10.26%) Peripheral 65 (74.71%) 14 (35.9%) Diffuse 21 (24.14%) 21 (53.84%) Margin of consolidation <0.001 Sharp 4 (4.1%) 23 (33.8%) Hazy 81 (81.8%) 12 (17.7%) Not applicable 14 (14.1%) 33 (48.5%) Multiple round consolidations 7 (8.04%) 16 (23.2%) 0.02