Table 2 Estimated regression coefficients from the additive model
| Â | Â | Main effect model (adj. R2 = 0.171) | Model with interaction terms (adj. R2 = 0.177) | ||||||
|---|---|---|---|---|---|---|---|---|---|
Covariate | Estimate | 95% confidence limits | p-value | Estimate | 95% confidence limits | p-value | |||
Intercept | 81.85 | 80.74 | 82.96 | < 0.0001 | 81.56 | 80.44 | 82.67 | < 0.0001 | |
Data collection* | Telephone interview | -4.49 | -5.89 | -3.08 | <0.0001 | -4.55 | -5.95 | -3.15 | <0.0001 |
Age (years) | see Figure 1 | <0.0001 | not shown | <0.0001 | |||||
BMI (kg/m2) | see Figure 1 | <0.0001 | not shown | <0.0001 | |||||
Sex†| Female | -4.06 | -5.13 | -2.99 | <0.0001 | -3.96 | -5.03 | -2.89 | <0.0001 |
Education‡ | Secondary | 0.07 | -1.29 | 1.44 | 0.9151 | 0.06 | -1.30 | 1.42 | 0.9332 |
| Â | Tertiary | 3.71 | 2.08 | 5.34 | <0.0001 | 3.72 | 2.10 | 5.35 | <0.0001 |
Diabetes mellitus | -2.49 | -3.89 | -1.10 | 0.0004 | -1.27 | -2.77 | 0.22 | 0.0946 | |
Coronary event | -3.94 | -5.67 | -2.21 | <0.0001 | -0.64 | -2.73 | 1.45 | 0.5462 | |
Stroke | -11.25 | -13.23 | -9.26 | <0.0001 | -9.44 | -11.66 | -7.22 | <0.0001 | |
Cancer | -2.67 | -4.16 | -1.17 | 0.0005 | -2.79 | -4.28 | -1.30 | 0.0002 | |
Chronic bronchitis | -8.10 | -10.18 | -6.03 | <0.0001 | -8.14 | -10.21 | -6.07 | <0.0001 | |
Hypertension | -1.15 | -2.22 | -0.07 | 0.0367 | -1.23 | -2.30 | -0.16 | 0.0248 | |
Diabetes*coronary event | Â | Â | Â | Â | -8.12 | -11.95 | -4.28 | <0.0001 | |
Coronary event*stroke | Â | Â | Â | Â | -8.28 | -13.17 | -3.38 | 0.0009 | |