A serial mediation model of social media addiction and college students’ academic engagement: the role of sleep quality and fatigue

Table 3 The total, direct and indirect effect of social media addiction on academic engagement

	Effects	Boot SE	Boot LLCI	Boot ULCI
Total effect	−0.272	0.019	−0.308	−0.235
Direct effect	−0.051	0.018	−0.087	−0.015
Total indirect effect	−0.220	0.017	−0.255	−0.187
Indirect effect 1	−0.031	0.008	−0.048	−0.016
Indirect effect 2	−0.109	0.011	−0.133	−0.088
Indirect effect 3	−0.080	0.007	−0.095	−0.066

Note: Boot SE, Boot LLCI, and Boot ULCI refer to the standard error and the upper and lower bounds of the 95% confidence intervals of the indirect effects estimated by the bootstrap method, respectively. Indirect effect 1: social media addiction → sleep quality → academic engagement; indirect effect 2: social media addiction →fatigue → academic engagement; indirect effect 3: social media addiction → sleep quality →fatigue → academic engagement

ISSN: 1471-244X