TABLE 1.
Basic characteristics of included studies.
| Author | Country | Design | Participants male/female | Age (years) | BMI (kg/m2) | Smoking | Respiratory comorbidities | Time of assessment | Quality rating |
|---|---|---|---|---|---|---|---|---|---|
| Huang et al., (2020) | China | retrospective | 57 26M/31F | 46.7 ± 13.7 | 23.9 ± 3.5 | History of smoking 9 (15.7%) | No patient was reported having chronic repiratory diseases | 30 days after discharge from the hospital | high |
| Venturelli et al., (2021) | Italy | prospective | 767 515M/252F | 63 ± 13.6 | NR | Active smoker 33 (4.3%) History of smoking 179 (23.3%) | NR | 81 (66–106) days after hospital discharge | high |
| You et al., (2020) | China | prospective | 18 10M/8F | 50.7 ± 12.1 | 26.4 ± 2.8 | NR | No patient was reported having chronic repiratory diseases | 38 ± 13.4 days after hospital discharge | high |
| Lerum et al., (2021) | Norway | prospective | 103 54M/49F | 59 (49–72) | 25.8 (23.8–29.6) | Current smoker 3 (3.4%) previous smoker 34 (39%) | NR | 3 months after hospital admission | poor |
| Daher et al., (2020) | Germany | prospective | 33 22M/11F | 64 ± 3 | 28 (24–31) | NR | 7 (21%) | 6 weeks after hospital discharge | high |
| Wu et al., (2021) | China | prospective, longitudinal, cohort | 83 47M/36F | 60 (52–66) | 25 (23.5–27.1) | NR | No patient was reported having chronic repiratory diseases | 3 months, 6 months, 9 months, 12 months after hospital discharge | high |
| Liang et al., (2020) | China | Prospective | 76 21M/55F | 41.3 ± 13.8 | 23.7 ± 4.5 | NR | Cough 45 (60%) Increased sputum production 33 (43%) Activity chest tightness and palpitations 47 (62%) | 3 -months follow-up study after discharge | high |
| Bellan et al., (2021) | Italy | prospective cohort study | 238 142M/96F | 61 (51–71) | NR | Never 139(58.4%)Former 74(31.1%)Current 25(10.5%)Pack-years,median(IQR) 15(7.25–36) | No patient was reported having chronic repiratory diseases | 4 months after discharge | high |
| Li et al., (2020) | China | a prospective study | 18 | NR | NR | History of smoking 3(16.6%) | history of tuberculosis 1 (5.5%) | Near discharge and in quarantine period (2 weeks after discharge) | high |
| van den Borst et al., (2020) | Netherlands | Prospective | 124 74M/50F | 59 ± 14 | NR | Never 48(39%)Former 74(60%)Current 2(2%) | asthma 12 (10%) chronic lung diseases 23 (19%) other lung diseases 4 (3%) | Three months after recovery | high |
| Mo et al., (2020) | China | Prospective | 110 55M/55F | 49.1 ± 14.0 | 23.5 ± 3.0 | History of smoking 13 (11.8%) | asthma 1 (0.9%) chronic bronchitis 1 (0.9%) bronchiectasis 1 (0.9%) | At time of hospital discharge | poor |
| Zhao et al., (2020) | China | retrospective | 55 22M/23F | 47.7 ± 15.5 | NR | active 2 (3.6%) former 2 (3.6%) | cough 7 (43.75%) | 3 months after hospital discharge | high |
| Huang et al., (2021) | China | prospective cohort study | 1733 897M/836F | 57 (47–65) | NR | Never-smoker 1585/1731 (92%) Current smoker 102/1731 (6%) Former smoker 44/1731 (3%) | Chronic obstructive pulmonary disorder 31 (2%) | 153.0 (146.0–160.0) days after hospital discharge | high |
NR, not reported; BMI, body mass index; M, male; F, female.