Table 4.

BADL and depression in the chain mediation analysis.

Pathway	Effect	Bootstrap SE	Bootstrap 95% CI		Effect size
			Lower	Upper
Ind1: SI → BADL→CA	0.132	0.047	0.045	0.228	23.9%
Ind2: SI → Depression→CA	0.095	0.027	0.046	0.153	17.2%
Ind3: SI → BADL→ Depression →CA	0.133	0.029	0.076	0.191	24.1%
Total Indirect Effect	0.360	0.039	0.284	0.441	65.2%
Direct Effect	0.191	0.049	0.096	0.286	34.6%
Total Effect	0.552	0.043	0.466	0.635	100.0%

N = 453.BADL, basic activities of daily living; CA, cognitive ability; SI, social isolation.