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Table 1 Patient characteristics of the included studies

From: Pulmonary function and chest computed tomography abnormalities 6–12 months after recovery from COVID-19: a systematic review and meta-analysis

Study Total patients included (n) Patients with PFT (n, %) Patients with chest CT (n, %) Follow-up interval ( months) Mean age (year) Male sex (%) Ever smoker Severe COVID-19 Critical COVID-19
Aparisi A 70 70 (100%) 0 6 55 36 N.A N.A N.A
Bardakci MI 65 59 (91%) 60 (92%) 6 N.A 75 46% 100% 12%
Bellan M 200 196 (98%) 190 (95%) 12 61 61 45% 72% 33%
Caruso D 118 0 118 (100%) 6 65 47 43% N.A 74%
Cassar MP 46 46 (100%) 0 6 55 63 37% 59% 50%
Chen Y 41 41 (100%) 41 (100%) 12 49 59 10% 39% N.A
Dai S 50 0 45 (90%) 6 48 50 N.A 22% N.A
Dorelli G 28 28 (100%) 0 6 56 79 32% 57% 36%
Faverio P 312 312 (100%) 0 6 61 73 26% 100% 77%
Han X 114 104 (91%) 114 (100%) 6 54 70 14% 100% 25%
Hellemons ME 92 43 (47%) 46 (50%) 6 58 63 N.A 92% 66%
Huang C 1733 349 (20%) 353 (20%) 6 56 52 8% 75% 25%
Huang L 1276 244 (19%) 118 (9%) 12 58 53 18% 77% 29%
Li Y 141 0 141 (100%) 6 59 63 11% N.A 7%
Liao T 303 303 (100%) 256 (84%) 12 40 19 3% 63% N.A
Liu M 41 41 (100%) 41 (100%) 6 50 54 N.A 37% 17%
Liu T 594 486 (82%) 486 (82%) 12 61 46 13% 89% 11%
Milanese M 135 135 (100%) 0 6 59 67 21% 100% 36%
Nabahati M 173 0 62 (36%) 6 54 33 N.A 54% N.A
Orzes N 40 40 (100%) 21 (53%) 6 58 78 N.A 67% 35%
Pan F 209 0 209 (100%) 12 49 45 2% 49% 11%
Safont B 313 313 (100%) 226 (72%) 6 61 59 44% 100% 28%
Shah AS 73 73 (100%) 0 6 63 60 32% N.A N.A
Staudt A 101 101 (100%) 0 12 59 58 35% N.A 20%
Vijayakumar B 32 26 (81%) 32 (100%) 12 62 66 59% 100% 44%
Wu Q 54 53 (98%) 48 (89%) 6 48 59 N.A 43% N.A
Wu X 83 83 (100%) 83 (100%) 12 59 57 0% 100% 55%
Yan X 119 119 (100%) 0 12 53 41 28% 24% N.A
Zhao Y 94 70 (74%) 94 (100%) 12 48 57 7% 46% 2%
Zhou F 120 116 (97%) 97 (81%) 12 52 41 13% 13% N.A
  1. COVID-19, coronavirus disease 2019; CT, computed tomography; PFT, pulmonary function test