Table 7.

Mediation effect of BMI on the association between serum and salivary biomarkers and average bedtime.

Biomarker	Characteristics	Estimate	SE	CI		p-value
Serum CRP	Direct effect	0.151	0.206	−0.253	0.554	0.464
	Indirect effect	0.277	0.132	0.018	0.536	0.036
	Total effect	0.428	0.245	−0.052	0.908	0.081
Serum IL-6	Direct effect	0.077	0.042	0.069	−0.006	0.160
	Indirect effect	0.021	0.009	0.018	0.004	0.039
	Total effect	0.098	0.042	0.018	0.017	0.180
Serum insulin	Direct effect	0.017	0.020	0.404	−0.023	0.056
	Indirect effect	0.022	0.011	0.047	0.0003	0.043
	Total effect	0.038	0.023	0.095	−0.007	0.083

The confidence intervals and standard errors were obtained using 5,000 bootstraps. Goodness of fit tests: comparative fit index = 1.00, Tucker–Lewis index = 1.00. Size of residuals: standardized root mean squared residual = 0.00.