Table 2.

Results of the Univariate Cox Proportional Hazards Survival Regression

Independent Variable	Hazard Ratio	SE	95% Confidence Interval	P-value
Total Activity Level (per hour increase)	0.996	0.002	(0.993, 0.999)	0.016
Age (per year increase)	1.027	0.013	(1.001, 1.052)	0.038
Gender (male versus female)	0.7458	0.1992	(0.442, 1.259)	0.272
Marital Status (white versus other)	0.6843	0.2703	(0.315, 1.484)	0.337
Race (per year increase)	0.9301	0.2626	(0.535, 1.617)	0.797
Education (per year increase)	0.9717	0.0324	(0.910, 1.037)	0.390
CSDD total (per point increase)	1.0659	0.0220	(1.024, 1.110)	0.002
MMSE total (per point increase)	0.9730	0.0116	(0.951, 0.996)	0.022
Dementia diagnosis (yes versus no)	1.5847	0.3600	(1.015, 2.474)	0.043
GMHR (reference: GMHR=4)
GMHR= 1	3.6387	2.0385	(1.214, 10.910)	0.021
GMHR= 2	2.7489	0.9283	(1.418, 5.328)	0.003
GMHR= 3	1.6233	0.5561	(0.829, 3.177)	0.157
NPI Total (per point increase)	1.0046	0.0061	(0.993, 1.017)	0.448
PGDRS Mobility score
(reference: mobility=3)
Mobility= 1	0.3694	0.1050	(0.212, 0.645)	< 0.001
Mobility= 2	0.7335	0.2602	(0.366, 1.470)	0.382

Legend: SE= Standard Error; CSDD=Cornell Scale for Depression in Dementa; GMHR= General Medical Health Rating; MMSE= Mini-Mental State Exam; NPI= Neuropsychiatric Inventory; PGDRS = Psychogeriatric Dependency Rating Scale