Table 3 Crude risk ratios (RRc) and 95% confidence interval (95% CI) of cardiovascular mortality for impaired respiratory health and lung function indicators at 5 and at 12 years of survival time and p-value for interaction with baseline, results of Cox' regression analysis.
Respiratory symptoms and lung function | RR c , 95% CI at 5 years | RR c , 95% CI at 12 years | p-value for interaction with baseline |
|---|---|---|---|
Chronic Bronchitis by physician diagnose | 1.53 0.83–2.79 | 1.65 0.93–2.95 | 0.7986 |
Frequent cough with phlegm production | 1.34 0.71–2.51 | 1.65 0.94–2.89 | 0.5377 |
Frequent cough | 1.17 0.73–1.89 | 1.21 0.76–1.93 | 0.9006 |
FEV1 < 80% of predicted value | 3.79 1.64–8.74 | 1.35 0.66–2.77 | 0.0303 |
FVC <80% of predicted value | 5.03 2.10–12.02 | 1.89 1.01–3.57 | 0.0445 |