Relationship between oral health-related knowledge, attitudes, practice, self-rated oral health and oral health-related quality of life among Chinese college students: a structural equation modeling approach

Table 4 Bootstrap analysis of mediating effect significance test for the final mode

Model paths	Standardized direct effects	95% CI		Standardized indirect effects	95% CI
Model paths	Standardized direct effects	LLCI	ULCI	Standardized indirect effects	LLCI	ULCI
Knowledge → Attitudes	0.68***	0.60	0.75	–	–	–
Attitudes → Practice	0.17***	0.09	0.25	–	–	–
Practice → Self-rated oral health	− 0.21***	− 0.27	− 0.15	–	–	–
Self-rated oral health → OHRQoL	0.27***	0.22	0.32	–	–	–
Knowledge → Practice	–	–	–	0.12***	0.06	0.17
Knowledge → Self-rated oral health	–	–	–	− 0.03***	− 0.04	− 0.01
Attitudes → Self-rated oral health	–	–	–	− 0.04***	− 0.06	− 0.02
Knowledge → OHRQoL	0.10*	0.00	0.22	− 0.18***	− 16.63	− 6.16
Attitudes → OHRQoL	− 0.28***	− 0.40	− 0.17	0.01	− 0.10	0.85
Practice → OHRQoL	0.10 **	0.03	0.17	− 0.06***	− 8.13	− 3.40

All of the direct effects were significant (p < 0.05); *p < 0.05; **p < 0.01; ***p < 0.001

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