Table 1.
Population characteristics.
| Variable | Value | Train | Test |
|---|---|---|---|
| Count | 3553 | 1523 | |
| Gender | F | 1781 (50.1%) | 771 (50.6%) |
| M | 1772 (49.9%) | 752 (49.4%) | |
| Prior admissions | 2.3 [4.5] | 2.2 [4.0] | |
| ACCI | 3.7 [4.5] | 3.8 [4.6] | |
| Age | 45.0 [16.7] | 45.2 [16.6] | |
| Median income of ZIP code | 65557 [23427] | 65679 [23869] | |
| Insurance | Private | 2268 (63.9%) | 970 (63.7%) |
| Public | 1285 (36.1%) | 553 (36.3%) | |
| 180-day readmission | Y | 819 (23.1%) | 349 (22.9%) |
| N | 2734 (76.9%) | 1174 (77.1%) |
ACCI is Age-adjusted Charlson Comorbidity Index. Parenthetical numbers for categorical variables denote % membership. Bracketed numbers for continuous variables denote the standard deviation. Note that prior admissions statistics refer to prior general (rather than psychiatric) admissions.
The bold font corresponds to the best performing model for a given set of features (in the leftmost column).