Table 5.
Logistic Regression Likelihood Ratio Test
| Model | χ2 (df) | pmodel | Δχ2 (Δdf) |
pdifference | Model | χ2 (df) |
pmodel | Δχ2 (Δdf) |
pdifference |
|---|---|---|---|---|---|---|---|---|---|
| Dialysis | Comfort Care Orderset | ||||||||
| 1 (all predictors) | 35.20 6 (4) | < .001 | 1 (all predictors) | 5.182 (4) | .269 | ||||
| 2 (removed sex) | 35.04 7 (3) | < .001 | 0.159 (1) | .6901 | 2 (removed age) | 5.134 (3) | .162 | 0.048 (1) | .8266 |
| 3*** (removed sex + CCI) | 28.85 5 (2) | < .001 | 6.192 (1) | .0128 | 3 (removed age + sex) | 4.784 (2) | .091 | 0.35 (1) | .5541 |
| 4 (removed sex + CCI + age) | 0.919 (1) | .338 | 27.93 6 (1) | < .00001 | 4*** (removed age + sex + CCI) | 3.076 (1) | .079 | 1.708 (1) | .1912 |
| Invasive Procedures | Received CPR | ||||||||
| 1 (all predictors) | 34.93 9 (4) | < .001 | 1 (all predictors) | 17.47 2 (4) | .002 | ||||
| 2 (removed sex) | 34.89 7 (3) | < .001 | 0.042 (1) | .8376 | 2 (removed CCI) | 17.47 0 (3) | .001 | 0.002 (1) | .9643 |
| 3*** (removed sex + CCI) | 31.91 2 (2) | < .001 | 2.985 (1) | .0840 | 3*** (removed CCI + sex) | 16.79 2 (2) | < .001 | 0.678 (1) | .4103 |
| 4 (removed sex + CCI + age) | 4.252 (1) | .039 | 27.66 (1) | <.00001 | 4 (removed CCI + sex + age) | 7.227 (1) | .007 | 9.565 (1) | .0020 |
| Mechanical Ventilation | Code Status at Time of Death | ||||||||
| 1 (all predictors) | 56.15 5 (4) | < .001 | 1 (all predictors) | 9.484 (4) | .050 | ||||
| 2*** (removed sex) | 55.63 4 (3) | <.001 | 0.521 (1) | .4704 | 2 (removed sex) | 9.455 (3) | .024 | 0.029 (1) | .8648 |
| 3 (removed sex + CCI) | 48.45 3 (2) | <.001 | 7.181 (1) | .0074 | 3 (removed sex + CCI) | 8.936 (2) | .011 | 0.519 (1) | .4713 |
| 4 (removed sex + CCI + age) | 12.49 6 (1) | < .001 | 43.13 8 (2) | < .00001 | 4*** (removed sex + CCI + age) | 5.281 (1) | .022 | 3.655 (1) | .0559 |
| Artificial Nutrition | Received PC Consult | ||||||||
| 1 (all predictors) | 10.60 9 (4) | .031 | 1 (all predictors) | 11.38 6 (4) | .023 | ||||
| 2 (removed sex) | 10.60 9 (3) | .014 | 0 (1) | 1 | 2 (removed age) | 11.38 1 (3) | .010 | 0.005 (1) | .9436 |
| 3*** (removed sex + CCI) | 9.979 (2) | .007 | 0.63 (1) | .4274 | 3 (removed age + sex) | 11.16 2 (2) | .004 | 0.219 (1) | .6398 |
| 4 (removed sex + CCI + age) | 0.035 (1) | .851 | 9.944 (1) | .0016 | 4*** (removed age + sex + CCI) | 7.860 (1) | .005 | 3.302 (1) | .0692 |
| CV Support | Received Hospice Consult | ||||||||
| 1 (all predictors) | 48.47 0 (4) | <.001 | 1 (all predictors) | 13.03 9 (4) | .011 | ||||
| 2 (removed sex) | 48.19 1 (3) | < .001 | 0.279 (1) | .5974 | 2 (removed sex) | 13.02 0 (3) | .005 | 0.019 (1) | .8904 |
| 3*** (removed sex + CCI) | 47.31 5 (2) | < .001 | 0.876 (1) | .3493 | 3 (removed sex + CCI) | 13.00 2 (2) | .002 | 0.018 (1) | .8933 |
| 4 (removed sex + CCI + age) | 4.573 (1) | .032 | 42.74 2 (1) | < .00001 | 4*** (removed sex + CCI + age) | 11.57 2 (1) | .001 | 1.43 (1) | .2318 |
| Admit/Transfer to the ICU | |||||||||
| 1 (all predictors) | 18.64 5 (4) | .001 | |||||||
| 2 (removed sex) | 18.35 9 (3) | < .001 | 0.286 (1) | .5928 | |||||
| 3*** (removed sex + CCI) | 15.19 7 (2) | .001 | 3.162 (1) | .0754 | |||||
| 4 (removed sex + CCI + age) | 4.033 (1) | .045 | 11.16 4 (1) | .0008 |
χ2, chi square; df, degrees of freedom; pmodel, significance of the individual model; Δχ2, change in chi square between models; Δdf, change in degrees of freedom between models; pdifference, significance of the Δχ2
***
, retained model