Table 2. Patient, Injury, Hospital, and Outcome Characteristics at the Time of Index Admission for Trauma Based on Readmission Status.
| Characteristic | Readmission Statusa | P Valueb | |
|---|---|---|---|
| None (n = 2993) |
≥1
Readmission (n = 799) |
||
| Patient | |||
| Age, mean (SE), y | 46.4 (0.7) | 58.1 (1.0) | <.01 |
| Sex | |||
| Male | 1762 (58.9) | 384 (48.1) | <.01 |
| Female | 1231 (41.1) | 415 (51.9) | |
| Zip code income quartile | |||
| 0-25th | 803 (26.8) | 246 (30.8) | .43 |
| 26th-50th | 828 (27.7) | 221 (27.6) | |
| 51th-75th | 744 (24.8) | 168 (21.1) | |
| 76th-100th | 578 (19.3) | 147 (18.4) | |
| Payer status at first admissionc | |||
| Medicare | 690 (23.1) | 345 (43.2) | <.01 |
| Medicaid | 406 (13.6) | 127 (15.9) | |
| Private insurance | 1243 (41.5) | 223 (27.9) | |
| Injury details | |||
| Splenic injury graded | |||
| 1-3 | 2190 (73.2) | 654 (81.8) | <.01 |
| 4-5 | 803 (26.8) | 145 (18.2) | |
| Management strategy | |||
| No procedure | 2139 (71.5) | 534 (66.9) | .62 |
| Splenectomy | 630 (21.0) | 195 (24.4) | |
| Angioembolization | 224 (7.5) | 70 (8.8) | |
| Hospital | |||
| Population setting | |||
| ≥1 Million | 1406 (47) | 437 (54.7) | .02 |
| <1 Million | 1587 (53) | 362 (45.3) | |
| Ownership | |||
| Government | 508 (17) | 99 (12.4) | .03 |
| Private | 2485 (83) | 700 (87.6) | |
| Bed size | |||
| Small | 1039 (34.7) | 270 (33.8) | .77 |
| Large | 1953 (65.3) | 529 (66.2) | |
| Teaching status | |||
| Nonteaching | 1191 (39.8) | 356 (44.6) | .14 |
| Teaching | 1802 (60.2) | 442 (55.4) | |
| Outcome | |||
| Discharge destination | |||
| Routine | 2492 (83.3) | 469 (58.8) | <.01 |
| Discharge with service | 500 (16.7) | 329 (41.2) | |
| Length of stay, mean (SE), d | 5 (0.2) | 9 (0.6) | <.01 |
| Died at readmission | NA | 50 (6.3) | NA |
Abbreviation: NA, not applicable.
a
Unless otherwise indicated, data are expressed as number (percentage) of patients. All numbers and percentages are accounted for by weight.
b
Calculated using univariate linear regression for continuous variables and Pearson χ2 test for binary variables.
c
Cell size is too small to report for some subcategories, per Healthcare Cost and Utilization Project data use agreement.
d
Calculated using the Abbreviated Injury Score for splenic injury (range, 1-5, with higher scores indicating greater severity of injury).