COPD patient subgroups | |||||
Typical bacteria analysis (n=134) | Culture analysis (n=74) | Atypical bacteria analysis (n=80) | Paired analysis (n=52) | p Value | |
FEV1 (l) | 1.22 (±0.52) | 1.20 (±0.5) | 1.11 (±0.50) | 1.15 (±0.50) | 0.407 |
FEV1/FVC (%) | 45.8 (±12.9) | 45.2 (±12.6) | 43.8 (±13.4) | 43.4 (±13.4) | 0.596 |
Predicted FEV1 (%) | 48.5 (±18.1) | 48.5 (18.3) | 45.4 (±17.8) | 46.4 (±17.5) | 0.582 |
Current smoker (%) | 28 | 32 | 25 | 29 | 0.860 |
Age (years) | 69.8 (±8.7) | 69.8 (±8.3) | 70.1 (±8.9) | 68.7 (±8.5) | 0.840 |
Male sex (%) | 64 | 69 | 68 | 61 | 0.773 |
Pack years smoking | 52.5 (±34.6) | 55.9 (±38.2) | 57.1 (±34.9) | 42.8 (±24.2) | 0.118 |
No significant differences were seen between the groups. Paired analysis refers to patients with paired stable and exacerbation-state samples (the nearest stable-state sample prior to exacerbation was used in this analysis). Data is presented as percentage value or mean±SD as appropriate.