Table 1.
Demographic and Clinical Characteristics of Admissions aged 65 and Older to the R Adams Cowley Shock Trauma Center 1996–2012 with Isolated Traumatic Brain Injury by Sex, n= 1,320
| Characteristic | Women N=590 |
Men N=730 |
P-value1 |
|---|---|---|---|
|
| |||
| Age, mean (SD) | 78.9 (7.7) | 76.8 (7.5) | <0.001 |
|
| |||
| Age, n(%) | <0.001 | ||
| 65–74 | 189 (32) | 299 (41) | |
| 75–84 | 252 (43) | 303 (42) | |
| >85 | 149 (25) | 128 (18) | |
|
| |||
| Race, n(%) | 0.18 | ||
| White | 449 (76) | 553 (76) | |
| Black | 98 (17) | 142 (19) | |
| Other | 43 (7) | 34 (5) | |
|
| |||
| Admission year, n(%) | 0.96 | ||
| 1996–2000 | 118 (20) | 153 (21) | |
| 2001–2005 | 148 (25) | 177 (24) | |
| 2006–2010 | 216 (37) | 264 (36) | |
| 2011–2012 | 108 (18) | 136 (19) | |
|
| |||
| Comorbid Conditions, n(%) | |||
| Alcohol dependence | 14 (2) | 47 (6) | <0.001 |
| Alzheimer’s disease | 27 (5) | 24 (3) | 0.23 |
| Cardiac arrhythmia | 37 (6) | 42 (6) | 0.69 |
| COPD | 26 (4) | 36 (5) | 0.65 |
| Diabetes | 129 (22) | 145 (20) | 0.37 |
| Depression | 45 (8) | 32 (4) | 0.01 |
| Heart failure | 36 (6) | 46 (6) | 0.88 |
| Hypertension | 346 (59) | 385 (53) | 0.03 |
| Ischemic heart disease | 37 (6) | 54 (7) | 0.42 |
| Neurologic disorders | 34 (6) | 58 (8) | 0.12 |
| Stroke | 49 (8) | 80 (11) | 0.11 |
|
| |||
| Blood Alcohol Concentration in g/dL, n(%) | 0.005 | ||
| Negative | 522 (88) | 614 (84) | |
| <0.1 | 8 (1) | 18 (2) | |
| ≥0.1 | 20 (3) | 55 (8) | |
| Missing2 | 40 (7) | 43 (6) | |
|
| |||
| Admission systolic blood pressure, mm Hg, n(%) | 0.12 | ||
| <90 | 12 (2) | 12 (2) | |
| 90 to <120 | 41 (7) | 43 (6) | |
| 120 to <140 | 74 (13) | 113 (15) | |
| 140 to <160 | 139 (24) | 189 (25) | |
| 160 to <180 | 121 (21) | 171 (23) | |
| ≥180 | 203 (34) | 205 (28) | |
|
| |||
| Length of stay, n(%) | 0.02 | ||
| Early death (<1 day) | 41 (7) | 43 (6) | |
| < 2 days | 246 (42) | 294 (40) | |
| 2 to 6 days | 199 (34) | 218 (30) | |
| 1 to < 2 weeks | 63 (11) | 87 (12) | |
| 2 to < 4 weeks | 35 (6) | 65 (9) | |
| ≥ 4 weeks | 6 (1) | 23 (3) | |
|
| |||
| Expired at discharge, n(%) | 96 (16) | 123 (17) | 0.78 |
|
| |||
| Discharge location, n(%) | 0.67 | ||
| Home no services | 222 (38) | 256 (35) | |
| Home with services | 24 (4) | 26 (4) | |
| Other hospital/unit | 232 (39) | 306 (42) | |
| Other | 15 (3) | 18 (2) | |
1
P-value from Chi-square goodness of fit or Student’s t-test;
2
BAC missing for 1996