Table 6.

Bootstarp intermediary effect test results.

Effect	effect value	SE	LLCI	ULCI	Effect proportion
Direct effect	0.138	0.013	0.110	0.165	55.78%
Indirect effect	0.109	0.005	0.095	0.124	44.13%
Total effect	0.247	0.014	0.218	0.275

SE, the standard error of indirect effects estimated; LLCI, lower limit confidence interval; ULCI, upper limit confidence interval.

Exposure: Number of Chronic Diseases; outcome: Cognitive impairment; Adjusted for gender, age, place of residence, the education level, marital status, and whether living alone.