Table 5.
Odds ratio between definition of dementia by HRS survey and claims based coding algorithm
| Cognitive impairment defined by HRS survey | ADRD defined by claims based coding algorithm | |||||
|---|---|---|---|---|---|---|
| Total | Relative Risk | Odds Ratio | ||||
| No | Yes | (%) | (95% CI) | (95% CI) | p-value | |
| Age 75 | ||||||
| No | 4,035 (98.22%) |
73 (1.78%) |
4,108 (95.74%) | 23.04 (18.07, 29.39) |
49.01 (33.81, 71.04) |
<0.0001 |
| Yes | 97 (53.00%) |
86 (47.00%) |
183 (4.26%) |
|||
| Total (%) | 4,132 (96.29%) |
159 (3.71%) | 4,291 (100.00%) | |||
|
Age 80 | ||||||
| No | 3,064 (96.50%) |
111 (3.50%) |
3,175 (92.54%) | 16.01 (12.96, 19.78) |
35.49 (26.00, 48.45) |
<0.0001 |
| Yes | 112 (43.75%) |
144 (56.25%) |
256 (7.46%) |
|||
| Total (%) | 3,176 (92.57%) |
255 (7.43%) | 3,431 (100.00%) | |||
|
Age 85 | ||||||
| No | 2,048 (92.75%) |
160 (7.25%) |
2,208 (88.71%) |
10.49 (8.49, 12.96) |
20.81 (15.58, 27.81) |
<0.0001 |
| Yes | 107 (38.08%) |
174 (61.92%) |
281 (11.29%) |
|||
| Total | 2,155 (86.58%) |
334 (13.42%) |
2,489 (100.00%) | |||
Table 5 compares our ADRD definition based on the claims-based algorithm with the HRS definition of cognitive impairment. The relative risk is the multiplicative increase in the probability of cognitive impairment by the HRS survey predicted by our measure of ADRD. The odds ratio is the multiplicative increase in odds of cognitive impairment by the HRS survey predicted by our measure of ADRD.