Table 4.

Linear regression of CBI

Variables	Univariate analyses					Multivariate analyses
	B	P value	SE	95% CI		B	P value	SE	95% CI
				Lower	Upper				Lower	Upper
Age of PWDs	0.48	0.008	0.18	0.126	0.835	0.11	0.19
Gender of PWDs	0.41	0.90	3.26	−6.06	6.87
Education level of PWDs
Primary school	−10.43	0.25	9.00	−28.28	7.42
Middle school	−1.79	0.82	8.01	−17.67	14.09
High school or above	−4.60	0.49	6.63	−17.74	8.54
Type of dementia
FTD	−3.65	0.48	5.11	−13.78	6.49
MD	2.624	0.56	4.96	−6.29	11.54
DLB	−1.65	0.77	5.55	−12.65	9.35
VD	6.74	0.13	4.43	−2.05	15.54
Score of MoCA	−0.80	0.003	0.10	−1.33	−0.27	−0.84	<0.001	0.22	−1.29	−0.40
Total score of NPI	0.30	0.005	0.06	0.09	0.50	0.16	0.05
Score of ADL	0.41	<0.001	0.11	0.20	0.63	0.14	0.13
Score of PSQI	0.33	0.60	0.001	−0.304	0.973
Age of caregivers	0.14	0.30	0.32	−0.13	0.40
Education level of caregivers
Primary school	14.75	0.15	10.28	−5.66	35.13
Middle school	5.75	0.55	9.69	−13.46	24.96
High school or above	7.31	0.40	8.59	−9.71	24.34
Relationship
Children	3.71	0.27	3.31	−2.85	10.26
Relatives	−17.71	0.07	9.74	−37.02	1059
Caregiving time for each week
9–20	−5.00	0.65	10.94	−26.67	16.70
21–40	−0.93	0.93	9.74	−20.24	18.39
>40	6.89	0.48	9.80	−12.54	26.31
Caregiving years
0.5	−17.00	0.36	18.28	−53.45	19.45
0.5–1	−15.78	0.32	15.82	−47.15	15.59
1–4	−12.44	0.41	15.09	−42.37	17.49
5–9	11.86	0.46	16.04	−19.95	43.67
>9	16.00	0.34	16.78	−17.27	49.27
PAC	−1.33	0.001	0.40	−2.12	−0.54	−1.22	0.001	0.34	−1.90	−0.55
Coping strategy	−0.25	0.38	0.28	−0.80	0.31
Social support	−3.32	0.006	1.18	−5.667	−0.972	−3.61	<0.001	0.99	−5.58	−1.64
Community service utilisation	3.54	<0.001	0.87	1.82	5.26	3.46	<0.001	0.76	1.96	4.96

AD, Alzheimer’s disease; ADL, activities of daily life; CBI, caregiver burden inventory; DLB, Dementia with Lewy bodies; FTD, frontotemporal dementia; MD, mixed dementia; MoCA, Montreal Cognitive Assessment; NPI, neuropsychiatric inventory; PAC, positive aspects of caregivers; PSQI, Pittsburgh Sleep Quality Index; PWD, persons with dementia; VD, vascular dementia.