Table 4.

Logistic Regression Model for Periodontitis – Odds of Having Periodontitis Among U.S. Women Ages 15-44 NHANES, 1999-2004 (N=2,648)

Variable	Unadjusted OR	95% CI	Adjusted* OR	95% CI
DMPA Use
Ever	1.62	(1.27– 1.92)	1.49	(1.01– 2.22)
Never	1	Ref	1	Ref
Race
Non-Hispanic Black	1.51	(1.17 – 1.82)	1.45	(1.00 – 2.11)
Hispanic	1.34	(1.06 – 1.71)	1.39	(0.96 – 2.01)
Non-Hispanic White	1	Ref	1	Ref
Age
20-29	1.71	(1.36 – 2.15)	1.65	(1.00 – 2.62)
30-39	3.52	(2.81 – 4.54)	2.43	(1.89 – 3.18)
40 -44	5.82	(4.61 – 7.52)	4.38	(3.20 – 6.01)
15-19		Ref	1	Ref
Poverty Index Level
0 - 1.3	2.32	(1.33 -3.20)	1.70	(1.16- 2.47)
1.31- 3.49	1.86	(1.66- 2.55)	1.51	(1.19 -1.91)
>3.5	1	Ref	1	Ref
Dental Visit < two years
Yes	1.59	(1.38 – 1.83)	1.44	(1.18 – 1.76)
No	1	Ref	1	Ref
Smoking status
Ever	1.67	(1.43 – 1.93)	1.71	(1.26 – 2.38)
Never	1	Ref	1	Ref
DMPA use * Smoking interaction†	0.49	(0.30-0.79)	0.55	(0.32-0.93)

^*Model controls for age race, poverty index level, smoking status and dental visits.

^†Interaction term model for DMPA use (Ever/Never) and Smoking (Ever/Never)