Table 3.

Mediation effects of patient clinical characteristics on care partner mental health through care partner burden

Variables		B (SE)	BootLLCI	BootULCI
Care Partner Anxiety
Patient Cognition (Model 1)	Total Effect	−.112 (.033)*	−.176	−.046
	Direct Effect	−.029 (.025)	−.077	.020
	a-path	−.264 (.064)*	−.385	−.135
	b-path	.314 (.019)*	.273	.353
	Indirect Effect (ab)	−.083 (.021)	−.124	.042
Patient Physical Function (Model 2)	Total Effect	−.030 (.009)*	−.049	−.014
	Direct Effect	−.013 (.007)*	−.028	−.003
	a-path	−.056 (.016)*	−.088	−.025
	b-path	.312 (.019)*	.272	.349
	Indirect Effect (ab)	−.017 (.005)*	−.028	−.008
Patient BPSD (Model 3)	Total Effect	.296 (.041)*	.219	.377
	Direct Effect	.110 (.036)*	.045	.185
	a-path	.640 (.070)*	.484	.786
	b-path	.290 (.020)*	.245	.335
	Indirect Effect (ab)	.186 (.026)*	.138	.239
Care Partner Depression
Patient Cognition (Model 4)	Total Effect	−.097 (.028)*	−.153	−.044
	Direct Effect	−.035 (.020)	−.076	.006
	a-path	−.264 (.064)*	−.385	−.135
	b-path	.234 (.016)*	.200	.269
	Indirect Effect (ab)	−.062 (.016)	−.094	.032
Patient Physical Function (Model 5)	Total Effect	−.034 (.008)*	−.050	−.019
	Direct Effect	−.021 (.007)*	−.034	−.009
	a-path	−.056 (.016)*	−.088	−.025
	b-path	.229 (.016)*	.196	.265
	Indirect Effect (ab)	−.013 (.004)*	−.021	−.006
Patient BPSD (Model 6)	Total Effect	.203 (.032)*	.140	.268
	Direct Effect	.059 (.027)*	.007	.118
	a-path	.640 (.070)*	.484	.786
	b-path	.224 (.017)*	.187	.265
	Indirect Effect (ab)	.144 (.021)*	.106	.190

Note. BPSD = Behavioral and Psychological Symptoms of Dementia. B = unstandardized regression coefficient. SE = standard error; BootLLCI = bootstrap lower limit within 95% confidence interval. BootUPCI = bootstrap upper limit within 95% confidence interval.