Table 2.

Odds ratios for periodontal disease (PD) and rheumatoid arthritis (RA).

Cohort	N	RA+PD+	RA+PD−	RA−PD+	RA−PD−	Odds Ratio	95% CI
All patients	865,256	12,576	8,866	421,098	422,716	1.42	1.37 – 1.46
Age < 44 years	455,070	6,844	4,753	229,472	214,001	1.34	1.29 – 1.39
Age >= 44 years	410,186	5,732	4,113	191,626	208,715	1.52	1.46 – 1.58
Male	806,944	10,862	7,754	393,124	395,204	1.41	1.37 – 1.45
Female	58,312	1,714	1,112	27,974	27,512	1.52	1.40 – 1.64
Caucasian	509,394	7,422	5,425	248,078	248,469	1.37	1.32 – 1.42
African American	194,926	2,876	2,100	89,692	99,878	1.53	1.44 – 1.62
Hispanic	49,926	864	432	27,686	20,944	1.51	1.35 – 1.70
Asian	5,955	97	52	3,415	2,391	1.31	0.93 – 1.84