Table 5.
Patient Characteristics for All Patients ≥55 Years of Age (Regardless of ISS) who Survived vs Died (January 2006 to December 2007)
| All patients alive at 60 d | All patients dead by 60 d | p Value | ||
|---|---|---|---|---|
| n (%) | 5,555 (92.4) | 460 (7.6) | ||
| Age group, y, n (%) | ||||
| 55–65 | 1,504 (27.1) | 42 (9.1) | <0.001 | |
| 66–75 | 1,035 (18.6) | 47 (10.2) | ||
| 76–85 | 1,714 (30.9) | 182 (39.6) | ||
| >85 | 1,302 (23.4) | 189 (41.1) | ||
| Sex, n (%) | ||||
| Female | 3,441 (62.4) | 235 (51.9) | <0.001 | |
| Male | 2,072 (37.6) | 218 (48.1) | ||
| Mechanism of injury, n (%) | ||||
| Fall | 2,811 (67.2) | 281 (82.4) | <0.001 | |
| MVC | 765 (18.3) | 26 (7.6) | ||
| Other | 605 (14.5) | 34 (10.0) | ||
| ISS, n (%) | ||||
| ISS<=9 | 2,173 (84.7) | 163 (73.8) | <0.001 | |
| ISS 10–15 | 190 (7.4) | 17 (7.7) | ||
| ISS 16–25 | 167 (6.5) | 28 (12.7) | ||
| ISS>25 | 36 (1.4) | 13 (5.9) | ||
| Head injury, n (%) | ||||
| GCS<14 | 302 (5.9) | 64 (15.3) | <0.001 | |
| GCS>=14 | 4,801 (94.1) | 355 (84.7) | ||
| Systolic blood pressure, mmHg, n (%) | ||||
| <90 | 71 (1.3) | 20 (4.6) | <0.001 | |
| 90–109 | 325 (6.0) | 40 (9.2) | ||
| 110–129 | 965 (17.9) | 100 (23.0) | ||
| 130–149 | 1,634 (30.2) | 120 (27.6) | ||
| 150–169 | 1,287 (23.8) | 96 (22.1) | ||
| >=170 | 1,120 (20.7) | 59 (13.6) | ||
| Heart rate, n (%) | ||||
| <90 | 3,387 (62.5) | 261 (59.0) | 0.03 | |
| 90–99 | 950 (17.5) | 70 (15.8) | ||
| 100–119 | 860 (15.9) | 83 (18.8) | ||
| 120–129 | 137 (2.5) | 22 (5.0) | ||
| 130–139 | 48 (0.9) | 3 (0.7) | ||
| >=140 | 34 (0.6) | 3 (0.7) | ||
Percentage is calculated as percentage of non-missing values.
SD, Standard Deviation; ISS, Injury Severity Score; SBP, Systolic Blood Pressure; HR, Heart Rate; GCS, Glasgow Coma Score.