Table 2.
Parameter estimates for Poisson models examining cognitive transitions over 3 and 6 years
| Model 1 Frailty index | Model 2Social vulnerability index | Model 3 Protective factors index | Model 4 All indices | |
|---|---|---|---|---|
| Wave 1 to wave 2 | ||||
| Intercept | 1.93 (1.72, 2.14) | 1.80 (1.58, 2.02) | 2.81 (2.47, 3.15) | 2.13 (1.72, 2.55) |
| Baseline cognitive state | 0.90 (0.87, 0.94) | 0.91(0.88, 0.95) | 0.90 (0.87, 0.94) | 0.88 (0.84, 0.92) |
| Age | 0.097 (0.074, 0.12) | 0.092 (0.068, 0.12) | 0.10 (0.08, 0.13) | 0.089 (0.065, 0.11) |
| Years of education | −0.096 (−0.12, −0.07) | −0.084 (−0.11, −0.057) | −0.083 (−1.10, −0.055) | −0.085 (−0.11, −0.057) |
| Frailty | 0.184 (0.08, 0.29) | 0.15 (0.052, 0.26) | ||
| Social vulnerability | 0.16 (0.088, 0.23) | 0.13 (0.061, 0.21) | ||
| Protective factors | −0.16 (−0.24, −0.087) | −0.11 (−0.19, −0.036) | ||
| Model fit statistics | ||||
| BIC | 11,776 | 12,183 | 11,834 | 11,674 |
| AIC | 11,747 | 12,213 | 11,863 | 11,633 |
| Wave 1 to wave 3 | ||||
| Intercept | 2.40 (2.12, 2.68) | 2.60 (2.31, 2.88) | 3.77 (3.33, 4.22) | 2.95 (2.42, 3.48) |
| Baseline cognitive state | 1.14 (1.08, 1.19) | 1.14 (1.08, 1.19) | 1.13 (1.08, 1.19) | 1.12 (1.07, 1.18) |
| Age | 0.19 (0.16, 0.23) | 0.19 (0.16, 0.22) | 0.20 (0.16, 0.23) | 0.19 (0.16, 0.22) |
| Years of education | −0.075 (−0.110, –0.039) | −0.062 (−0.097, −0.027) | −0.057 (−0.09, −0.021) | −0.057 (−0.09, −0.021) |
| Frailty | 0.40 (0.27, 0.54) | 0.38 (0.24, 0.51) | ||
| Social vulnerability | 0.14 (0.051, 0.24) | 0.10 (0.01, 0.20) | ||
| Protective factors | −0.21 (−0.31, −0.11) | −0.19 (−0.28, −0.087) | ||
| Model fit statistics | ||||
| BIC | 10,560 | 10,881 | 10,620 | 10,534 |
| AIC | 10,533 | 10,853 | 10,593 | 10,496 |
Values are shown as β (95% confidence interval) apart from AIC (Akaike information criterion) and Bayesian information criteria (BIC).