Table 1.
Demographic and Clinical Characteristics of Admissions aged 65 and Older to the R Adams Cowley Shock Trauma Center 2008–2012 with Traumatic Brain Injury by Sex, n= 1,843
| Total, n=1,843 | Women, n=882 | Men, n=961 | p-value1 | |
|---|---|---|---|---|
| Age (years), mean(SD) | 78.3 (8.1) | 79.9 (8.2) | 76.8 (7.7) | <0.001 |
| Age category, n(%) | <0.001 | |||
| 65–74 | 676 (37) | 267 (30) | 409 (43) | |
| 75–84 | 700 (38) | 331 (38) | 369 (38) | |
| >84 | 467 (25) | 284 (32) | 183 (19) | |
| Race, n(%) | 0.05 | |||
| White | 1,487 (81) | 704 (80) | 783 (81) | |
| Black | 257 (14) | 119 (13) | 138 (14) | |
| Other | 99 (5) | 59 (7) | 40 (4) | |
| Admission year, n(%) | 0.75 | |||
| 2008 | 275 (15) | 141 (16) | 134 (14) | |
| 2009 | 351 (19) | 166 (19) | 185 (19) | |
| 2010 | 421 (23) | 200 (23) | 221 (23) | |
| 2011 | 421 (23) | 194 (22) | 227 (24) | |
| 2012 | 375 (20) | 181 (21) | 194 (20) | |
| Comorbid Conditions, n(%) | ||||
| Alcohol dependence | 62 (3) | 14 (2) | 48 (5) | <0.001 |
| Alzheimer’s disease | 69 (4) | 43 (5) | 26 (3) | 0.01 |
| Cardiac arrhythmia | 102 (6) | 44 (5) | 58 (6) | 0.33 |
| COPD2 | 107 (6) | 48 (5) | 59 (6) | 0.52 |
| Diabetes | 407 (22) | 188 (21) | 219 (23) | 0.45 |
| Depression | 147 (8) | 88 (10) | 59 (6) | 0.002 |
| Heart failure | 100 (5) | 46 (5) | 54 (6) | 0.70 |
| Ischemic heart disease | 88 (5) | 38 (4) | 50 (5) | 0.37 |
| Neurologic disorders | 112 (6) | 47 (5) | 65 (7) | 0.20 |
| Stroke | 153 (8) | 79 (9) | 74 (8) | 0.33 |
| Admit SBP3, mm Hg, mean (SD) | 158.4 (36.5) | 162.1 (35.1) | 154.9 (37.4) | <0.001 |
| Payer | <0.001 | |||
| Medicare | 1,504 (82) | 753 (85) | 751 (78) | |
| Auto Insurance | 166 (9) | 76 (9) | 90 (9) | |
| Other | 171 (9) | 53 (6) | 118 (12) | |
| ICU Stay, n(%) | <0.001 | |||
| None | 1,269 (69) | 646 (73) | 623 (65) | |
| < 2 days | 125 (7) | 50 (6) | 75 (8) | |
| 2 to <6 days | 169 (9) | 81 (9) | 88 (9) | |
| 6 to <12 days | 144 (8) | 62 (7) | 82 (9) | |
| ≥ 12 days | 136 (7) | 43 (5) | 93 (10) | |
| Length of stay, n(%) | <0.001 | |||
| < 1 day | 459 (25) | 210 (24) | 249 (26) | |
| 1 to <2 days | 251 (14) | 132 (15) | 119 (12) | |
| 2 to <4 days | 469 (25) | 252 (29) | 217 (23) | |
| 4 to < 6 days | 283 (15) | 139 (16) | 144 (15) | |
| 6 to <14 days | 208 (11) | 92 (10) | 116 (12) | |
| 14 to <28 days | 130 (7) | 45 (5) | 85 (9) | |
| ≥ 28 days | 43 (2) | 12 (1) | 31 (3) | |
| Expired at discharge, n(%) | 294 (16) | 120 (14) | 174 (18) | 0.008 |
| Discharge location, n(%) | 0.03 | |||
| Home no services | 607 (33) | 283 (32) | 324 (34) | |
| Home with services | 49 (3) | 27 (3) | 22 (2) | |
| Inpatient | 863 (47) | 434 (49) | 429 (45) | |
| Other | 30 (2) | 18 (2) | 12 (1) |
1
P-value from Chi-square goodness of fit or Student’s t-test;
2
Glasgow Coma Scale score;
3
Amended Injury Severity Score (ISS) calculated by subtracting the square of the maximum Abbreviated Injury Scale score from the ISS.