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Table 2 Comparison of initial and follow-up CT between the two follow-up groups

From: Medium-term chest computed tomography (CT) follow-up of COVID-19 pneumonia patients after recovery to assess the rate of resolution and determine the potential predictors of persistent lung changes

Parameter Complete radiological resolution on follow-up CT (n = 46; 56.8%) Residual lung findings on follow-up CT (n = 35; 43.2%) p value
Laterality of lung involvement on initial CT
  Bilateral 33 (71.8%) 29 (82.8%) 0.2962
  Unilateral 13(28.2%) 6 (17.2%)  
Number of lobes involved on initial CT 3 ± 1.3 3.4 ± 1.4 0.6351
Percentage of total lung involvement on initial CT (CT severity score) 8.1 ± 2.3 12.4 ± 3.2 0.03843
Dominant pulmonary opacity on initial CT
  Pure GGO 34 (73.9%) 24 (68.6%) 0.6266
  Consolidation 4 (8.7%) 6 (17.1%) 0.3155
  Mixed pattern 8 (17.4) 5 (14.3%) 0.7686
Dominant pulmonary opacity on follow-up CT
  GGO N/A 16 (45.7%) N/A
  Linear/curvilinear parenchymal bands   9 (25.7%)  
  Mixed pattern of GGO and parenchymal bands   6 (17.2%)  
  Interlobular septal thickening   4 (11.4%)  
  Bronchiectasis   6 (17.2%)  
Time lapse between initial and follow-up CT (Mean days ± SD) 101.4 ± 9.8 99.6 ± 8.7 0.4737
  1. CT computed tomography, GGO ground glass opacity