Table 1.
Characteristics of Medicare Beneficiaries 2006–2010 Hospitalized with Traumatic Brain Injury by Incident Depression Status (n=55,728)
| Characteristic | New depression pre-TBI n=4841 | New depression post-TBI n=4668 | No depression n=46,219 |
|---|---|---|---|
| Mean age1 (years) (standard deviation) | 80.7 (8.0) | 81.7 (7.9) | 81.0 (8.3) |
| Sex, n (%) | |||
| Female | 3170 (65) | 2882 (62) | 26,460 (57) |
| Male | 1671 (35) | 1786 (38) | 19,759 (43) |
| Race, n (%) | |||
| White | 4211 (87) | 4011 (86) | 39,079 (85) |
| Black | 266 (5) | 305 (6) | 3208 (7) |
| Other | 364 (8) | 352 (8) | 3932 (9) |
| History of comorbid disease, n (%) | |||
| Alzheimer and related dementias | 2440 (50) | 1177 (25) | 11,759 (25) |
| Heart failure | 2566 (53) | 1999 (43) | 20,562 (44) |
| Chronic obstructive pulmonary disease | 1984 (41) | 1541 (33) | 14,480 (31) |
| Diabetes | 2117 (44) | 1793 (38) | 17,942 (39) |
| Atrial fibrillation | 1458 (30) | 1201 (26) | 12,489 (27) |
| Chronic kidney disease | 1663 (34) | 1143 (24) | 11,961 (26) |
| Ischemic heart disease | 3511 (73) | 3082 (66) | 29,370 (64) |
| Stroke/transient ischemic attack | 1767 (37) | 1273 (28) | 12,233 (26) |
| Discharge to Skilled Nursing Facility, n (%) | 2205 (46) | 1872 (40) | 15,053 (33) |
| Length of TBI hospital stay, n (%) | |||
| 0–2 days | 1212 (25) | 1063 (23) | 12,380 (27) |
| 3–5 days | 1905 (39) | 1732 (37) | 16,242 (35) |
| 6–8 days | 710 (15) | 777 (17) | 6844 (15) |
| 9 or more days | 1014 (21) | 1096 (24) | 10,753 (23) |
| Mean months follow-up post-depression diagnosis, (standard deviation) | 10.3 (8.6) | 16.4 (12.4) | n/a |
TBI, traumatic brain injury.
1
Age at depression diagnosis or age at TBI for those in whom depression did not develop.