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Table 2 Parameter estimates for Poisson models examining cognitive transitions over 3 and 6 years

From: Cumulative impact of health deficits, social vulnerabilities, and protective factors on cognitive dynamics in late life: a multistate modeling approach

  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
  1. Values are shown as β (95% confidence interval) apart from AIC (Akaike information criterion) and Bayesian information criteria (BIC).