Table 4.
Risk equation with a simple current/non-smoker smoking status variable (Model 1)
| Variable | Parameter Estimate | Standard Error | Chi-Square | P value | Hazard Ratio | 95% CI | |
|---|---|---|---|---|---|---|---|
| Sex | 0.6391 | 0.1119 | 32.6222 | <.0001 | 1.895 | 1.522 | 2.360 |
| Age | 0.0768 | 0.0069 | 123.1031 | <.0001 | 1.080 | 1.065 | 1.095 |
| Sbp | 0.0142 | 0.0036 | 14.9743 | 0.0001 | 1.014 | 1.007 | 1.022 |
| Dbp | -0.0176 | 0.0069 | 6.3866 | 0.0115 | 0.983 | 0.969 | 0.996 |
| Total/HDL ratio | 0.2127 | 0.0347 | 37.4452 | <.0001 | 1.237 | 1.156 | 1.324 |
| Diabetes | 0.8101 | 0.1518 | 28.4764 | <.0001 | 2.248 | 1.670 | 3.028 |
| Trglycerides | -0.0015 | 0.0005 | 7.2971 | 0.0069 | 0.998 | 0.997 | 1.000 |
| Current smoker | 0.5594 | 0.1251 | 19.9779 | <.0001 | 1.750 | 1.369 | 2.236 |
| Test | Total | Event | Censord | % Censord | |||
| 3751 | 383 | 3368 | 89.79 | ||||
| Chi-Square | DF | P value | |||||
| Likelihood Ratio | 437.1565 | 8 | <. 0001 | ||||
| Hosmer Lemeshow | 18.6207 | 9 | 0.0286 | ||||
| Modified HL | 17.4569 | 9 | 0.0420 | ||||
| Estimate | SE | 95% CI | |||||
| C statistic | 0.8038 | 0.0109 | 0.7825,0.8251 | ||||
Note: The reference categories for sex, diabetes and the smoking variable are female, no diabetes and non-current smoker respectively.