Table 4.

Predictors of Oral Health Knowledge

Variable	Coefficient	Standard Error	95% CI		p-value
			Upper	Lower
Gender (Ref = Male)	0.19	0.09	−0.38	−0.02	0.03*
Female
Age (Ref = < 40 years)	0.21	0.12	−0.46	0.03	0.09
≥ 40 years
Nationality (Ref = Non-Saudi)	0.19	0.12	−0.05	−0.43	0.11
Saudi
Education (Ref = Less than university)	0.27	0.09	0.09	0.46	0.003*
University
Monthly income SAR (Ref = <10,000 SAR)	0.1	0.09	−0.09	0.29	0.29
≥ 10,000
Smoking (Ref = No)	−0.31	0.09	−0.48	−0.13	0.001*
Yes

Note: *Statistically significant.

Abbreviations: CI, confidence interval; Ref, reference; SAR, Saudi Arabian Riyal.