Table 1.
Characteristics of Patients who were Re-Admitted within 1 Year after Index Admission for Injury who Survived their Index Admission (but may not have survived the year)
| All Patients (N = 211504) | No Subsequent Admissions (N = 141494) | Patients with >=1 Admission (N = 79123) | p value | ||
|---|---|---|---|---|---|
| Demographics | |||||
| Age | 18–24 | 20112 (9.61%) | 17219 (12.38%) | 2893 (4.11%) | <0.001 |
| 25–34 | 19596 (9.36%) | 16226 (11.67%) | 3370 (4.79%) | ||
| 35–44 | 20000 (9.55%) | 15705 (11.30%) | 4295 (6.11%) | ||
| 45–54 | 24860 (11.87%) | 18327 (13.18%) | 6533 (9.29%) | ||
| 55–65 | 22629 (10.81%) | 15435 (11.10%) | 7194 (10.23%) | ||
| 65–74 | 22794 (10.89%) | 13614 (9.79%) | 9180 (13.05%) | ||
| 75–84 | 40020 (19.12%) | 21612 (15.54%) | 18408 (26.18%) | ||
| >84 | 39352 (18.80%) | 20902 (15.03%) | 18450 (26.24%) | ||
| Gender | Male | 106971 (51.09%) | 76194 (54.80%) | 30777 (43.77%) | <0.001 |
| Female | 102392 (48.91%) | 62846 (45.20%) | 39546 (56.23%) | ||
| Race | White | 136306 (65.11%) | 87006 (62.58%) | 49300 (70.11%) | <0.001 |
| Black | 13487 (6.44%) | 9392 (6.75%) | 4095 (5.82%) | ||
| Hispanic | 38507 (18.39%) | 27939 (20.09%) | 10568 (15.03%) | ||
| Asian | 11847 (5.66%) | 7920 (5.70%) | 3927 (5.58%) | ||
| Other or Unknown | 9216 (4.36%) | 6783 (4.79%) | 2433 (3.07%) | ||
| Insurance | Self-pay | 16959 (8.10%) | 14336 (10.31%) | 2623 (3.73%) | <0.001 |
| Medicare | 97877 (46.75%) | 52935 (38.07%) | 44942 (63.91%) | ||
| Medicaid | 19679 (9.40%) | 13525 (9.73%) | 6154 (8.75%) | ||
| Commercial | 51891 (24.79%) | 39715 (28.57%) | 12176 (17.31%) | ||
| Other or Unknown | 22948 (11%) | 18522 (13%) | 4426 (1%) | ||
| Injury Characteristics | |||||
| ISS | <15 | 186576 (89.12%) | 124703 (89.69%) | 61873 (87.98%) | <0.001 |
| >15 | 22787 (10.77%) | 14337 (10.13%) | 8450 (12.02%) | ||
| Mechanism | Penetrating | 12194 (5.82%) | 10020 (7.21%) | 2174 (3.09%) | <0.001 |
| Falls | 114756 (54.81%) | 67399 (48.47%) | 47357 (67.34%) | <0.001 | |
| Any MVC | 35140 (16.78%) | 26801 (19.28%) | 8339 (11.86%) | <0.001 | |
| Other | 28072 (13.41%) | 22268 (16.02%) | 5804 (8.25%) | <0.001 | |
| Missing | 19201 (9.17%) | 12552 (9.03%) | 6649 (9.45%) | 0.001 | |
| Outcomes | |||||
| Death during index admission | 5094 (2.43%) | 5073 (3.65%) | 21 (0.03%) | <0.001 | |
| 1-year mortality | 27228 (13.01%) | 13142 (9.45%) | 14086 (20.03%) | <0.001 | |
| 1-year costs | 28840.69 ± 52459.46 | 17039.72 ± 31942.98 | 49509.65 ± 71511.05 | <0.001 | |
ISS Injury Severity Score; MVC Motor Vehicle Collision
Note: percentages are for nonmissing values (?true for ISS?)