Table 2.

Results of Growth Curve Models for Selected Cognitive Measures Controlling for Age, Practice Effect, and Death

Measure and Parameter	Estimate (SE)	Variance
Abstraction (0–16)
Baseline score	6.94 (0.18)	15.12*
Change/y	−0.16 (0.04)	0.03
Language (0–18)
Baseline score	16.86 (0.06)	1.62*
Change/y	−0.10 (0.02)	0.04*
Spatial ability (0–20)
Baseline score	15.08 (0.12)	5.82*
Change/y	−0.22 (0.03)	0.09*
Verbal recall (0–18)
Baseline score	5.77 (0.09)	3.07*
Change/y	−0.26 (0.02)	0.04*
Spatial recognition (0–17)
Baseline score	9.47 (0.13)	4.14*
Change/y	−0.34 (0.04)	0.02
Summary score (0–89)
Baseline score	54.11 (0.38)	71.77*
Change/y	−1.09 (0.08)	0.76*
SPMSQ (0–9)
Baseline score	8.29 (0.03)	0.02
Change/y	−0.18 (0.02)	0.03*

Notes:

^*p <.001.

SE = standard error; SPMSQ = Short Portable Mental Status Questionnaire.