Table 4.
Prevalence of cognitive disorders and mean of cognitive test score.
| Total (n = 20,910) | High OSA Risk (n = 6,612) | Low OSA Risk (n = 4,361) | |
|---|---|---|---|
| Normal cognition (n, weighted %) | 15,110 (83.3) | 4,932 (84.1) | 3,362 (90.0) |
| CIND (n, weighted %) | 3,446 (13.0) | 1,089 (12.7) | 474 (8.0) |
| Dementia (n, weighted %) | 1,065 (3.7) | 292 (3.2) | 134 (2.0) |
| Immediate word recall (weighted mean score, SE) | 5.6 (0.02) | 5.5 (0.03) | 6.0 (0.03) |
| Delayed word recall (weighted mean score, SE) | 4.6 (0.02) | 4.5 (0.03) | 5.0 (0.04) |
| Serial 7’s task (weighted mean score, SE) | 3.8 (0.01) | 3.8 (0.02) | 3.9 (0.03) |
| Backward count (weighted mean score, SE) | 1.9 (0.004) | 1.9 (0.07) | 1.9 (0.008) |
HRS survey weighted prevalence (%) of each cognitive disorder and HRS survey weighted mean (and SE) of each objective cognitive test score, by OSA risk. CIND = cognitive impairment not dementia, OSA = obstructive sleep apnea, SE = standard error.