Table 2.
Relationship between Subjective Age and Incident Dementia (N= 4,262)
| Predictor | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 |
|---|---|---|---|---|---|
|
|
|||||
| Hazard Ratios (95% CI) |
Hazard Ratios (95% CI) |
Hazard Ratios (95% CI) |
Hazard Ratios (95% CI) |
Hazard Ratios (95% CI) |
|
| Age | 1.07(1.05-1.08)*** | 1.07(1.05-1.08)*** | 1.07(1.06-1.09)*** | 1.07(1.06-1.09)*** | 1.07(1.06-1.09)*** |
| Male | 1.21(.98-1.50) | 1.19(.96-1.47) | 1.23(1.00-1.52) | 1.27(1.03-1.57) | 1.27(1.02-1.57)* |
| White | .90 (.72-1.14) | .92 (.73-1.16) | .91 (.72-1.15) | .91 (.72-1.14) | .93 (.73-1.17) |
| Education | .96 (.86-1.08) | .97(.87-1.09) | .97(.86-1.09) | .99(.88-1.11) | 1.00(.89-1.13) |
| Baseline Cognition | .68 (.64-.72)*** | .68 (.64-.72)*** | .68 (.64-.72)*** | .69 (.65-.73)*** | .69 (.65-.73)*** |
| Subjective Age | 1.16 (1.04-1.29)** | 1.16 (1.04-1.30)** | 1.15 (1.03-1.29)* | 1.11 (.99-1.23) | 1.11 (.99-1.23) |
| Self-reported Diabetes | 1.22(.97-1.54) | – | – | 1.21 (.96-1.54) | |
| Self-reported Hypertension | .93(.74-1.17) | – | – | .90 (.71-1.14) | |
| Current Smoking | 1.41 (.92-2.16) | – | 1.35(.88-2.07) | ||
| Current Physical Activity | .93 (.73-1.17) | – | .93(.74-1.18) | ||
| Depressive symptoms | 1.24(1.14-1.36)*** | 1.24(1.13-1.36)*** | |||
Note.
*
p<.05,
**
p<.01,
***
p<.001;
Subjective age: Higher value represents an older subjective age (felt age-chronological age/chronological age: Range: −0.71-0.37); Education was assessed on a scale that ranged from 1 “No schooling completed” to 9 “Master’s, professional or doctoral degree”; Baseline cognition was the sum of standardized memory, orientation and executive function, with higher score indicating higher cognition (Range: −5.43-6.02); Depressive symptoms was the mean of two items, with higher mean indicating higher depressive symptoms (Range: 1–4).