. Author manuscript; available in PMC: 2015 Jun 2.

Published in final edited form as: Psychol Aging. 2008 Dec;23(4):917–927. doi: 10.1037/a0013466

Table 4. Standardized Total UFOV Performance over Time as Predicted by Baseline Demographic and Health Variables.

	Model 1		Model 2		Model 3		Model 4

Variable	Estimate	S.E.	Estimate	S.E.	Estimate	S.E.	Estimate	S.E.
Fixed Effects
Intercept	-0.120^**	0.036	-0.195^**	0.039	-0.197^**	0.039	0.027	0.083
Time	-0.144^**	0.017	-0.166^**	0.018	-0.164^**	0.019	-0.163^**	0.019
Time²	0.032^**	0.004	0.036^**	0.004	0.036^**	0.004	0.035^**	0.004
Attrition			0.220^**	0.066	0.236^**	0.067	0.096	0.063
Attrition*time			0.074^**	0.023	-0.028	0.066	-0.025	0.066
Age			0.075^**	0.005	0.077^**	0.005	0.066^**	0.005
Age*time			0.004^**	0.001	-0.001	0.003	-0.001	0.003
Attrition*time²					0.038	0.023	0.037	0.023
Age*time²					0.001^*	0.001	0.001^*	0.001
CES-D							0.010	0.006
Education							-0.034^**	0.011
MMSE							-0.087^**	0.015
Gender							-0.034	0.067
Race							-0.212^**	0.065
Self-rated health							0.086^*	0.035
Visual acuity							-0.007^*	0.003
Random Effects
Residual95% confidence	0.207^**	0.006	0.207^**	0.007	0.207^**	0.007	0.207^**	0.007
Lower	0.194		0.195		0.194		0.194
Upper	0.220		0.221		0.220		0.220
Var (intercept) 95% confidence	0.782^**	0.048	0.558^**	0.036	0.557^**	0.035	0.459^**	0.030
Lower	0.695		0.493		0.492		0.404
Upper	0.882		0.632		0.631		0.523
Var (time) 95% confidence	0.005^**	0.001	0.005^**	0.001	0.005^**	0.001	0.004^**	0.001
Lower	0.004		0.003		0.003		0.003
Upper	0.009		0.008		0.008		0.008
Corr (int, time)	0.016^*	0.106	0.003	0.005	0.004	0.005	0.003	0.005
95% confidence
Lower	0.003		-0.007		-0.007		-0.007
Upper	0.029		0.014		0.015		0.013
^a Pseudo-R²
Residual	0.099		0.001		0.003		< 0.001
Intercept	0.060		0.287		0.002		0.098
Time			0.173		0.001		0.007
Corr (int, time)			0.789		0.174		-0.416
Model Fit
Log likelihood	6063.655		5818.353		5811.016		5694.044
AIC	6077.655		5840.353		5837.016		5734.044
BIC	6119.972		5906.851		5915.604		5854.949

p < 0.05, two-tailed.

^**

p < 0.01, two-tailed.

Note. UFOV = Useful Field of View Test; MMSE = Mini-Mental State Examination; CES-D = Center for Epidemiological Studies – Depression Scale.

Pseudo-R² values for each model are based on the proportion reduction in random variance components above and beyond the model immediately preceding it.