Table 9.
Backward binary logistic regressions cross-validated by demographic groups for predicting ICU admissions.
| Sex | Age | Ethnicity | ||||||
|---|---|---|---|---|---|---|---|---|
| Features | Female | Male | Young | Middle | Older | Non-Hispanic | Hispanic | |
| Male | -- | -- | -- | 1.87 * | 1.91 * | 1.75 ** | 1.39 ** | |
| Age | ||||||||
| Young Adult | -- | -- | -- | -- | -- | -- | -- | |
| Middle | 0.89 | 1.26 | -- | -- | -- | 2.08 | 0.92 | |
| Older | 1.71 | 2.11 | -- | -- | -- | 5.6 ** | 1.29 | |
| BMI | ||||||||
| Normal | -- | 0.29 * | 0.02 ** | -- | -- | -- | -- | |
| Overweight | -- | 0.31 | 0.01 ** | -- | -- | -- | -- | |
| Obese | -- | 0.50 | 0.01 ** | -- | -- | -- | -- | |
| Race | ||||||||
| Black | -- | -- | -- | -- | -- | -- | -- | |
| Other | -- | 1.07 | -- | 1.32 | 1.32 | -- | 1.69 * | |
| White | -- | 0.57 * | -- | 0.65 | 0.65 | -- | 0.69 * | |
| Hispanic | -- | -- | 2.89 * | 1.23 | 1.23 * | -- | -- | |
| Smoke | ||||||||
| Never | -- | -- | -- | -- | -- | -- | -- | |
| Former | -- | -- | -- | -- | -- | -- | -- | |
| Current | -- | -- | -- | -- | -- | -- | -- | |
| Diabetes | 1.91 * | 1.47 * | -- | 2.42 * | 2.41 ** | 2.08 * | 1.76 ** | |
| Hypertension | 1.84 * | 2.37 * | 3.01 * | 2.32 * | 2.32 ** | -- | 2.39 ** | |
| COPD | -- | 0.65 | -- | -- | 1.76* | -- | ||
| Asthma | -- | -- | -- | -- | -- | -- | 1.78 * | |
| CKD Stages 1–4 | 1.60 * | 1.71 * | 10.42 * | 1.70 * | 1.70 * | 1.22 | 1.56 * | |
| CKD Stage 5 | -- | -- | 6.26 * | -- | -- | 0.15 * | -- | |
| Heart Failure | -- | 1.62 * | 3.09 * | 2.24 * | -- | -- | 1.39 * | |
| Cancer | -- | -- | -- | -- | -- | -- | -- | |
| Cardiac Arrhythmias | -- | 0.39 | -- | -- | -- | 0.53 * | -- | |
| Cerebrovascular Disease | 0.39 * | -- | -- | 0.47 * | 0.47 | 0.52 | -- | |
| Coronary Artery Disease | 1.40 | -- | -- | -- | -- | 1.31 | -- | |
| Liver Disease | -- | -- | 3.09* | -- | -- | -- | -- | |
| HIV | -- | -- | -- | -- | -- | -- | -- | |
| Pneumonia | -- | 1.73 | 1.69 | -- | -- | 1.26 | 1.24 * | |
| ARBs | 0.65 * | 0.62 * | 0.44 | 0.52 * | 0.51 * | -- | 0.66 * | |
| ACEIs | 0.73 * | 0.73 | 0.23 | 0.76 | 0.76 | 0.46 ** | 0.69 * | |
| Diarrhea | 5.56 * | 7.93 ** | 41.46 ** | 10.13 ** | 10.13 ** | 7.86 ** | 9.28 ** | |
| Dependence on Renal Dialysis | 2.55 * | -- | -- | -- | -- | 6.39 ** | -- | |
| R2 | 0.18 | 0.24 | 0.46 | 0.48 | 0.27 | 0.29 | 0.26 | |
| Correct Classification% | 93.6% | 91.5% | 95.9% | 95.7% | 97.1% | 89.6% | 89.8% | |
Note. Only variables that were identified as key predictors are reported for each model. Unique variance; * p < 0.05; ** p < 0.01. ‘--' in the table indicates the features not retained by the model for the sub-class.