Table 4.
Clinical predictors of social deprivation
| Variable | Estimate* (95% CI) | P value |
|---|---|---|
| Current smoker | 0.9172 (0.8356 to 0.9989) | <0.001 |
| Ex-smoker | 0.2946 (0.2287 to 0.3605) | <0.001 |
| Never smoked† | 0 | |
| CABG† | 0 | |
| CABG + other | 0.0873 (−0.1556 to 0.3302) | 0.481 |
| CABG + valve(s) | −0.2114 (−0.3132 to −0.1097) | <0.001 |
| CABG + valve(s) + other | −0.5406 (−0.9751 to −0.1062) | 0.015 |
| Other | 0.1151 (−0.1011 to 0.3313) | 0.297 |
| Valve(s) only | −0.1427 (−0.2285 to −0.05683) | 0.001 |
| Valve(s) + other | −0.2386 (−0.5067 to 0.0294) | 0.081 |
| Log Euroscore | 0.07098 (0.02499 to 0.117) | 0.003 |
| Diabetes | 0.6437 (0.5687 to 0.7188) | <0.001 |
| BMI | −0.07049 (−0.08712 to −0.05386) | <0.001 |
| BMI 1‡ | −0.00008 (−0.00015 to −0.00001) | 0.017 |
| BMI 2‡ | 0.006199 (0.004857 to 0.007542) | <0.001 |
| BMI 3‡ | −0.01247 (−0.01578 to −0.00916) | <0.001 |
*Estimate indicates the actual effect of the variable on Carstairs score.
†Reference variable.
‡Higher order terms from fitting restricted cubic spline with 5 knots to describe effects of BMI as non-linear function. Knots for restricted cubic spline for BMI placed at 21.1, 24.9, 27.2, 29.8, and 35.38 (kg/m2).