From: Smoking, season, and detection of chlamydia pneumoniaeDNA in clinically stable COPD patients
 | Entire Study Group (%) | DNAa Present (%) | DNA Absent (%) | Unadjusted ORb (95% CI) |
---|---|---|---|---|
Number | 100 | 27 (27.0) | 73 (73.0) | Â |
Male | 61 / 100 (61.0) | 20 / 27 (74.1) | 41 / 73 (56.2) | 2.2 (0.8, 5.9) |
Current smoking | 32 / 100 (32.0) | 13 / 27 (48.1) | 19 / 73 (26.0) | 2.6 (1.1, 6.6) |
Season (Nov. to April) | 44 / 100 (44.0) | 18 / 27 (66.7) | 26 / 73 (35.6) | 3.6 (1.4, 9.2) |
Smoker or Season | 63 / 100 (63.0) | 25 / 27 (92.6) | 38 / 73 (52.1) | 11.5 (2.5, 52.2) |
Chronic cough | 50 / 98 (51.0) | 16 / 26 (61.5) | 34 / 72 (47.2) | 1.8 (0.7, 4.5) |
Chronic sputum | 64 / 99 (64.6) | 24 / 27 (88.9) | 40 / 72 (55.6) | 6.4 (1.8, 23.2) |
Pneumonia in 1 year | 9 / 98 (9.2) | 2 / 26 (7.7) | 7 / 72 (9.7) | 0.8 (0.2, 4.0) |
Prednisone | 18 / 98 (18.4) | 3 / 27 (11.1) | 15 / 71 (21.1) | 0.5 (0.1, 1.8) |
Inhaled corticosteroids | 67 / 98 (68.4) | 19 / 27 (70.4) | 48 / 71 (67.6) | 1.1 (0.4, 3.0) |
Coronary artery disease | 10 / 92 (10.9) | 2 / 27 (7.4) | 8 / 65 (12.3) | 0.6 (0.1, 2.9) |
Diabetes mellitus | 5 / 92 (5.4) | 2 / 27 (7.4) | 3 / 65 (4.6) | 1.7 (0.3, 10.5) |