Table 4.

Bootstrap tests of mediating effect between smoking amount, screen time, education years, and BMI in older adults.

	Coeff	Boot SE	Boot LLCI	Boot ULCI
Total effect	0.048	0.010	0.028	0.067
Direct effect	0.039	0.010	0.019	0.059
Parallel multiple mediating effects	0.009	0.002	0.006	0.012
Smoking amount	0.003	0.001	0.001	0.004
Screen time	0.006	0.001	0.004	0.009
Difference	−0.004	0.001	−0.007	−0.001

The difference value reflects the difference between effect size values of smoking status and screen time.