Table 2.

Multivariable analysis (N = 699 edentulous per 3.448 total; log-likelihood: 3068, R² = 0.13)

Parameter	Category	OR	95% CI	p value
Cohort (ref: 1997)	2005	0.93	0.76–1.14	0.487
	2014	0.42	0.33–0.54	< 0.001
Age	Per year	1.11	1.08–1.15	< 0.001
Gender (ref: male)	Female	1.40	1.15–1.70	0.001
Educational level (ref: low)	Medium	0.39	0.29–0.52	< 0.001
	High	0.28	0.19–0.40	< 0.001
Smoking (ref: never)	Former	1.48	1.18–1.86	0.001
	Current	3.58	2.76–4.65	< 0.001