Table 4 Indicators for COPD in logistic regression model
Regression coefficient (Beta)Standard errorWald probability (p)Exp(Beta) OR
Ever smoker1.0750.006<0.00012.93
Dyspnoea on exertion0.7720.003<0.00012.16
Chronic phlegm production0.4380.007<0.00011.55
Gender (male)0.3520.005<0.00011.42
Age (y)0.0210.0002<0.00011.02
Chronic cough−0.0930.007<0.00010.91
  • COPD, chronic obstructive pulmonary disease.