Table 2:
Incidence of dementia, as classified by the four algorithms, by history of TBI status, HRS 2000–2014
| N | Number of dementia cases | Person-years at risk | IR (95% CI) | IRD (95% CI) | |
|---|---|---|---|---|---|
| LKW | |||||
| Overall | 2414 | 434 | 25905 | 16.8 (15.2 ; 18.3) | - |
| Without TBI | 2128 | 391 | 22929 | 17.1 (15.4 ; 18.7) | Ref |
| TBI | 286 | 43 | 2976 | 14.5 (10.1 ; 18.8) | −2.6 (−7.2 ; 2.0) |
| HW | |||||
| Overall | 2477 | 240 | 27549 | 8.7 (7.6 ; 9.8) | - |
| Without TBI | 2181 | 211 | 24410 | 8.6 (7.5 ; 9.8) | Ref |
| TBI | 296 | 29 | 3140 | 9.2 (5.9 ; 12.6) | 0.6 (−3.0 ; 4.2) |
| Wu | |||||
| Overall | 2470 | 351 | 27037 | 13.0 (11.6 ; 14.3) | - |
| Without TBI | 2174 | 310 | 23946 | 12.9 (11.5 ; 14.4) | Ref |
| TBI | 296 | 41 | 3091 | 13.3 (9.2 ; 17.3) | 0.3 (−4.0 ; 4.6) |
| Crimmins | |||||
| Overall | 2367 | 403 | 25853 | 15.6 (14.1 ; 17.1) | - |
| Without TBI | 2092 | 364 | 22932 | 15.9 (14.2 ; 17.5) | Ref |
| TBI | 275 | 39 | 2921 | 13.4 (9.2 ; 17.5) | −2.5 (−7.0 ; 2.0) |
TBI: Traumatic Brain Injury; LKW: Langa-Kabeto-Weir; HW: Herzog & Wallace.