. Author manuscript; available in PMC: 2013 Dec 1.

Published in final edited form as: Psychol Aging. 2012 Sep 3;27(4):1008–1017. doi: 10.1037/a0029857

Table 2.

Estimated Paths of Global Cognitive Change in Alzheimer's Disease

		Model A		Model B
Effect	Model Term	Estimate	95% CI	Estimate	95% CI
Fixed	Intercept	-0.928^*	-0.985,-0.870	-0.945^*	-1.011,-0.883
	Slope 1	0.003	-0.012,0.020	0.043^*	0.020,0.074
	Slope 2	-0.087^*	-0.099,-0.073	-0.093^*	-0.108,-0.077
	Slope 3	-0.370^*	-0.417,-0.334	-0.389^*	-0.433,-0.350
	Change point 1	-7.456^*	-8.268,-6.726	-7.700^*	-8.748,-6.950
	Change point 2	-1.965^*	-2.243,-1.654	-1.849^*	-2.214,-1.554
Random	Intercept	0.184^*	0.147.0.227	0.220^*	0.178,0.276
	Slope 1	0.0004^*	0.0002,0.0008	0.004^*	0.002,0.006
	Slope 2	0.001^*	0.0004,0.002	0.003^*	0.002.0.005
	Slope 3	0.036^*	0.026,0.053	0.048^*	0.034,0.067
	Change point 1	0.029^*	0.001,0.697	0.190^*	0.016,1.642
	Change point 2	0.089^*	0.002,0.320	0.052^*	0.015,0.192
	Error	0.088^*	0.082,0.095	0.085^*	0.079,0.091

Note. Results were estimated from 2 separate mixed-effects change point models. Fixed effects indicate the estimated group mean and random effects indicate person specific deviation from the group mean. Model terms were assumed to be uncorrelated in Model A but not in Model B. CI, confidence interval.

p < 0.05.