The prevalence of the asthma–COPD overlap phenotype in COPD
| Author (year) | n (%) | % male | FEV1, predicted, post bronchodilator | Age, years | Smoking % (pack years) |
|---|---|---|---|---|---|
| Wardlaw (2005)46 | 5 (10.2) | 80 | 46.8 | 59.8 | −(18.4) |
| Weatherall (2010)42 | 15 (8.6) | 73 | 58 | 65 | −(36) |
| Cho (2010)43 | 102 (33) | 64 | 34 | 68 | −(68) |
| Jo (2010)44 | 59 (30.8) | 86 | 59.6 | 67 | 81 (36.6) |
| Bafadhel (2011)45 | 19 (25) | 74 | 51 | 68 | 42 (50) |
| Disantostefano (2013)41 | 156 (10) | 54 | 31.3 | 64 | 100 (50) |
| Ghebre (2014)21 | 47 (27.4) | 55 | 63.9 | 60 | 62 (11) |