Association between oral health-related quality of life and depressive symptoms in Chinese college students: Fitness Improvement Tactics in Youths (FITYou) project

Table 2 Logistic regression analysis for the association of OHRQoL with depressive symptoms

Sex	Total score of OHIP-14 ^a	No. Depressive symptoms	Model 1^b		Model 2^c	Model 3^d
Sex	Total score of OHIP-14 ^a	No. Depressive symptoms	ORs (95% CI)	P value	ORs (95% CI)	P value	ORs (95% CI)	P value
Male	0 (n = 299)	39	1.00 (ref)		1.00 (ref)		1.00 (ref)
	1–6 (n = 379)	48	0.97 (0.61–1.53)	0.894	0.94 (0.59–1.50)	0.800	0.94 (0.59–1.50)	0.798
	> 6 (n = 309)	98	3.19 (2.10–4.86)	< 0.001	3.09 (2.00–4.77)	< 0.001	3.07 (1.98–4.76)	< 0.001
Female	0 (n = 659)	89	1.00 (ref)		1.00 (ref)		1.00 (ref)
	1–6 (n = 973)	168	1.34 (1.01–1.77)	0.040	1.28 (0.96–1.69)	0.091	1.28 (0.96–1.69)	0.092
	> 6 (n = 842)	275	3.16 (2.41–4.12)	< 0.001	2.89 (2.20–3.80)	< 0.001	2.90 (2.21–3.81)	< 0.001

OHRQoL Oral health-related quality of life, ORs Odds ratios, CI Confidential interval
^a The higher scores indicate poorer oral health status
^b Adjusted for age (continuous), ethnicity (Han ethnicity, minority ethnicity), sibling number (0, ≥ 1 siblings), and parental education level (< high school, ≥ high school)
^c Same as Model 1 + smoking status (current, former, never), drinking status (current drinker, non-drinker), frequency of breakfast (< 5, ≥ 5 times per week), and sleep duration (< 6, 6–7, 7–8, > 8 h)
^d Same as Model 2 + body mass index (< 18.5, 18.5–24.9, ≥ 25 kg/m²)

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