Table 8.

Regression model for excessive daytime sleepiness^a

Effect	Coefficient	Standard Error	df	t	p
Intercept	−0.761	0.5750	402	−1.32	0.186
Age	0.0118	0.0060	255	1.94	0.053
MMSE	0.0024	0.0081	255	0.29	0.770
Blessed	0.0603	0.0130	255	4.63	<0.0001
Education	0.0026	0.0088	255	0.30	0.767
CSDD	0.0253	0.0068	255	3.75	0.0002
CESD	0.0113	0.0044	255	2.60	0.010
CG Gender	0.1512	0.1451	255	1.04	0.299
CG Age	0.0461	0.1043	255	0.44	0.659
Patient Gender	0.4251	0.1427	255	2.98	0.003b
African Americanc	−0.0344	0.1653	255	−0.21	0.836d
Hispanicc	−0.1818	0.1077	255	−1.69	0.093

^aMMSE, Mini-mental State Exam; Blessed, Blessed Dementia Rating Scale; CSDD, Cornell Scale for Depression in Dementia for patients; CESD, Center for Epidemiological Studies Depression Scale for caregivers; CG Gender, caregivers' gender coded so that a positive coefficient indicates that women caregivers were more likely to report the behavior; CG age, informant age similar to or younger than the patient, coded so that a negative coefficient indicates that younger caregivers were more likely to report the behavior; Patient gender, patient gender coded so that a positive coefficient indicates that women were more likely to display the behavior.

^bTests of the difference between model-predicted average ratings for this variable showed that men were rated higher on this variable than were women (mean rating 1.26 vs. 0.84; (t(df = 255) = 2.98, p = 0.003).

^cTest associated with these factors reflect differences from base category which was non-Hispanic whites.

^dNo comparisons based on ethnicity were statistically significant.