. Author manuscript; available in PMC: 2017 Oct 1.

Published in final edited form as: Arthritis Rheumatol. 2016 Oct;68(10):2384–2393. doi: 10.1002/art.39724

Table 2.

Odds ratios for prevalent rheumatoid factor seropositivity (RF+) by clinical periodontal measures: Dentate participants aged ≥ 60 years and without ACR-defined rheumatoid arthritis, enrolled in NHANES III 1988–1992. (N=2461)

	Crude RF+ prevalence= 5.8 % (143/2461)	p-value	Adjusted^* RF+ prevalence= 5.8 % (143/2461)	p-value
Mean probing depth	1.34 (0.97, 1.87)	0.08	1.34 (0.92, 1.97)	0.13
Mean attachment loss	1.14 (0.98, 1.33)	0.10	1.09 (0.93, 1.28)	0.29
Total missing teeth	1.01 (0.98, 1.04)	0.64	1.00 (0.97, 1.03)	0.80
Percent of sites bleeding on probing	1.03 (0.94, 1.11)	0.53	1.02 (0.93, 1.12)	0.63

Mean probing depths, attachment loss and percent of bleeding on probing sites are based on the mesiobuccal and midbuccal sites of all fully erupted teeth, excluding 3^rd molars, in 2 randomly selected quadrants.

Odds ratios are for either a 1 mm increase in probing depth or attachment loss; 1 additional missing tooth; or a 10% increase in BOP.

Adjusted for age, sex, race, education, smoking, BMI, alcohol.