Table 1.
Characteristics of the Study Population
| Characteristic | Full Sample | Under 60 | 60 and Older | |||
|---|---|---|---|---|---|---|
| PN (n = 448) | Control (n = 527) | PN (n = 121) | Control (n = 196) | PN (n = 327) | Control (n = 331) | |
| % ≥age 60 | 73.0 | 62.6 | – | – | – | – |
| Age (mean) | 66.7 | 63.8 | 46.9 | 46.0 | 74.0 | 74.3 |
| % Female | 56.9 | 56.0 | 47.9 | 51.5 | 60.2 | 58.3 |
| Race/ethnicity | ||||||
| % White | 57.6 | 60.5 | 53.7 | 63.3 | 59.0 | 58.9 |
| % Black | 15.9 | 13.9 | 14.1 | 10.2 | 16.5 | 16.0 |
| % Hispanic | 14.7 | 14.6 | 21.5 | 18.9 | 12.2 | 12.1 |
| % Other | 11.8 | 11.0 | 10.7 | 7.7 | 12.2 | 13.0 |
| % English speaking | 58.3 | 65.3 | 74.4 | 79.1 | 52.3 | 57.1 |
| Insurance | ||||||
| % Medicare | 31.3 | 25.6 | 1.7 | 2.6 | 42.2 | 39.3 |
| % Medicaid | 48.7 | 51.8 | 72.7 | 67.4 | 39.8 | 42.6 |
| % Dual eligible | 12.5 | 16.5 | 13.2 | 18.9 | 12.2 | 15.1 |
| % Commercial/Other | 7.6 | 6.1 | 12.4 | 11.2 | 5.8 | 3.0 |
| Charlson score (mean) | 2.19 | 2.09 | 1.88 | 2.02 | 2.27 | 2.13 |
| % with psychiatric diagnoses | 46.0 | 52.6 | 66.9 | 67.4 | 38.2 | 43.8 |
| % with substance abuse diagnoses | 24.8 | 38.3 | 53.7 | 60.7 | 14.1 | 25.1 |
| % with COPD | 8.3 | 5.5 | 9.1 | 5.1 | 8.0 | 5.7 |
| % with heart failure | 7.4 | 4.9 | 5.0 | 2.6 | 8.3 | 6.3 |
| % with ≥3 day LOS at index | 45.5 | 53.9 | 64.5 | 72.5 | 38.5 | 41.4 |
p < .05 in bold.