Table 3.

Relation of Demographic Variables to Retest Effects Estimated from a Change Point Model with a Composite Measure of Global Cognition

Effect	Estimate (95% confidence interval)
Intercept
Mean	0.196 (0.157,0.238)
Age	−0.029 (−0.033,−0.025)
Education	0.053 (0.046,0.06)
Male gender	−0.084 (−0.141,−0.02)
Black race	−0.294 (−0.346,−0.241)
Initial slope
Mean	0.348 (0.254,0.468)
Age	0.005 (−0.003,0.013)
Education year	0.004 (−0.008,0.018)
Male gender	0.006 (−0.1,0.127)
Black race	−0.077 (−0.173,0.011)
Change-point
Mean	0.448 (0.358,0.536)
Age	−0.005 (−0.01,0)
Education, years	0.004 (−0.005,0.012)
Male gender	−0.07 (−0.144,0.003)
Black race	0.027 (−0.045,0.1)
Slope after change point
Mean	−0.079 (−0.09,−0.067)
Age	−0.006 (−0.007,−0.005)
Education, years	−0.003 (−0.005,−0.001)
Male gender	0.004 (−0.014,0.021)
Black race	0.022 (0.008,0.037)
Random effects
Intercept	0.18 (0.163,0.199)
Initial slope	−0.049 (−0.077,−0.024)
Change point	0.005 (0.002,0.007)
Slope after change point	−0.016 (−0.024,−0.009)
End of learning phase (change-point)	0.044 (0.032,0.056)
Error

Note. The mean represents the effect when all covariates are zero.