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Table 2 CT characteristics of three age groups of COVID-19 patients

From: Clinical and CT findings of COVID-19: differences among three age groups

GroupsAll patients (n = 307)Age < 40 Y (n = 104)40 Y ≤ Age <60 Y (n = 137)60 Y ≤ Age (n = 66)P1(G1 & G2)P2(G1 &G3)P3(G2 &G3)
CT Findings (LW)
 Location    <0.001<0.0010.240
 One lobe or Two lobes85 (27.7%)58 (55.8%)28 (20.4%)9 (13.6%)   
 Multiple lobes222 (72.3%)46 (44.2%)109 (79.6%)57 (86.4%)   
 Number    <0.001<0.0011.000
 One or two31 (10.1%)23 (22.1%)5 (3.6%)3 (4.5%)   
 More276 (89.9%)81 (77.9%)132 (96.4%)63 (95.5%)   
 Subpleural lesions289 (94.1%)90 (86.5%)135 (98.5%)64 (97%)<0.0010.0230.830
Shape
 pGGO276 (89.9%)99 (95.2%)123 (89.8%)54 (81.8%)0.1230.0050.112
 mGGO191 (62.2%)60 (57.7%)85 (62%)46 (69.7%)0.4940.1150.286
Sign
 Halo sign254 (82.7%)86 (82.7%)114 (83.2%)54 (81.8%)0.9150.8840.806
 Reversed halo sign38 (12.4%)8 (7.7%)22 (16.1%)8 (12.1%)0.0510.3350.459
 Crazy paving sign117 (38.1%)18 (17.3%)66 (48.2%)33 (50%)<0.001<0.0010.808
 Cavity sign21 (6.8%)3 (2.9%)11 (8.3%))8 (12.1%)0.0910.0390.348
Organizational involvement
 Vascular dilatation249 (81.1%)77 (74%)112 (81.8%)60 (90.9%)0.0530.0020.089
 Bronchodilatation146 (47.6%)38 (36.5%)69 (50.4%)39 (59.1%)0.0320.0040.243
CT Findings (MW)
 Pleural thickening*36 (11.7%)4 (3.8%)21 (15.3%)11 (16.7%)0.0040.0040.806
 Pleural effusion*15 (4.9%)4 (3.8%)6 (4.4%)5 (7.6%)1.0000.4800.541
 Lymphadenectasis13 (4.2%)3 (2.9%)5 (3.6%)5 (7.6%)1.0000.3000.144
  1. Note: G1 Age<40 Y, G2 40 Y ≤ Age<60 Y, G3 60 Y ≤ Age, LW lung window, MW mediastinal window, pGGO pure ground-glass opacity, mGGO mixed ground-glass opacity, * All but one patients had mild pleural thickening or a little effusion (the only one case had moderate pleural effusion)