From: Smoking, season, and detection of chlamydia pneumoniaeDNA in clinically stable COPD patients
 | Beta Coefficient (95% Confidence Interval)a | ||
---|---|---|---|
Risk Factor | Entire Study Group | Age ≤ 65 years (n = 34) | Age > 65 years (n = 59) |
Age (L/year) | -0.03 (-0.04, -0.01)b | -0.05 (-0.08, -0.02)b | -0.01 (-0.04, 0.02) |
Male | 0.43 (0.21, 0.66)b | 0.35 (-0.03, 0.74)d | 0.41 (0.12, 0.70)c |
Current Smoker | -0.17 (-0.41, 0.08) | -0.40 (-0.80, 0.00)d | -0.05 (-0.36, 0.27) |
Chlamydia pneumoniae DNAe | -0.16 (-0.41, 0.10) | -0.40 (-0.86, 0.06)d | -0.10 (-0.43, 0.23) |
November to April | 0.19 (-0.04, 0.41) | 0.19 (-0.20, 0.57) | 0.17 (-0.12, 0.47) |