Table 2.
Factors Associated With Patient Readmissions at 90 Daysa
| Factor | Nonreadmitted (n = 25,570) | Readmitted (n = 453) | P Value |
|---|---|---|---|
| Alcohol | 282 (1.1) | 3 (0.7) | .497 |
| Deficiency anemias | 1372 (5.4) | 15 (3.3) | .063 |
| Rheumatoid arthritis/collagen vascular disease | 1173 (4.6) | 18 (4.0) | .640 |
| Chronic blood loss anemia | 111 (0.4) | 0 (0.0) | .271 |
| Congestive heart failure | 590 (2.3) | 12 (2.7) | .634 |
| Chronic pulmonary disease | 4492 (17.6) | 97 (21.4) | .032 |
| Coagulopathy | 337 (1.3) | 9 (2.0) | .210 |
| Depression | 3819 (14.9) | 74 (16.3) | .389 |
| Diabetes, uncomplicated | 4324 (16.9) | 81 (17.9) | .573 |
| Diabetes with chronic complications | 485 (1.9) | 6 (1.3) | .485 |
| Drug abuse | 178 (0.7) | 0 (0.0) | .080 |
| Hypertension | 16,731 (65.4) | 313 (69.1) | .112 |
| Hypothyroidism | 3914 (15.3) | 61 (13.5) | .322 |
| Liver disease | 327 (1.3) | 8 (1.8) | .393 |
| Lymphoma | 81 (0.3) | 0 (0.0) | .408 |
| Fluid/electrolyte disorder | 1236 (4.8) | 27 (6.0) | .268 |
| Metastatic cancer | 18 (0.1) | 0 (0.0) | >.99 |
| Other neurological disorders | 1217 (4.8) | 18 (4.0) | .498 |
| Obesity | 5166 (20.2) | 77 (17.0) | .100 |
| Paralysis | 90 (0.4) | 3 (0.7) | .220 |
| Peripheral vascular disease | 673 (2.6) | 10 (2.2) | .766 |
| Psychoses | 585 (2.3) | 14 (3.1) | .264 |
| Pulmonary circulation disorders | 211 (0.8) | 3 (0.7) | >.99 |
| Renal failure | 1278 (5.0) | 21 (4.6) | .816 |
| Solid tumor without metastases | 130 (0.5) | 2 (0.4) | >.99 |
| Peptic ulcer disease | 2 (0.0) | 0 (0.00) | >.99 |
| Valvular disease | 986 (3.9) | 23 (3.9) | .173 |
| Weight loss | 29 (0.1) | 0 (0.0) | >.99 |
| Tobacco use | 1870 (7.3) | 34 (7.5) | .865 |
| Elixhauser Comorbidity Indexb | –0.54 ± 4.9 | –0.17 ± 4.78 | .099 |
| Charlson Comorbidity Indexb | 0.65 ± 1.0 | 0.67 ± 1.10 | .570 |
aValues are presented as n (%) unless noted otherwise. Bold indicates statistically significant difference between groups (P < .05).
bMean ± SD.