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 | RRc, 95% CI at 5 years | RRc, 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 |
Abbreviations:
FEV1: Forced expiratory volume in 1 second; FVC: Forced vital capacity;