Table 2.
Cox proportional hazards models predicting 25-year CHD mortality as a function of 6 risk factors in Northern and Southern Europe.
| Delta for Hazard Ratios | NE | SE | P of difference between coefficients (*) | |
|---|---|---|---|---|
| Hazard Ratios and (95% CI) | Hazard Ratio and (95% CI) | |||
| Age, years | 5 | 1.36 (1.25–1.49) | 1.35 (1.15–1.57) | 0.8929 |
| Body mass index, kg/m2 | 3 | 1.01 (0.92–1.11) | 1.14 (1.00–1.29) | 0.1200 |
| Systolic blood pressure, mmHg | 20 | 1.39 (1.28–1.52) | 1.42 (1.22–1.65) | 0.8549 |
| Heart rate, beats/min | 13 | 1.02 (0.93–1.12) | 1.14 (0.99–1.32) | 0.2014 |
| Serum cholesterol, mmol/L | 1 | 1.23 (1.15–1.31) | 1.25 (1.10–1.43) | 0.8051 |
| Never smokers, proportion | reference | — | — | — |
| Ex-smokers, proportion | 1 | 1.15 (0.83–1.61) | 1.31 (0.75–2.26) | 0.7042 |
| Smokers, proportion | 1 | 1.52 (1.16–2.00) | 2.02 (1.35–3.02) | 0.2570 |
| S(0) = baseline cumulative survival | — | 0.7698 | 0.9354 |
NE = Northern Europe; SE = Southern Europe
CI = confidence intervals
Deltas for Hazard Ratios (HR) roughly correspond to 1 standard deviation of each risk factor.
(*) Coefficients not reported.