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J Periodontol. 2015 Jan;86(1):16-26. doi: 10.1902/jop.2014.140339.

Performance of self-reported measures for periodontitis in rheumatoid arthritis and osteoarthritis.

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University of Nebraska Medical Center, Omaha, NE.



This study evaluates the performance of self-report against the reference standard of clinically defined periodontitis in patients with rheumatoid arthritis (RA) and osteoarthritis (OA) after accounting for factors associated with periodontitis.


Six self-report periodontitis questions were evaluated in patients with RA and OA. Questions were validated against a reference standard of severe and moderate-to-severe periodontitis based on full-mouth examination. Multivariable logistic regression was used to evaluate the performance of: 1) self-report alone; 2) age, sex, education, and smoking status; and 3) a combination of the above. Model performance was assessed using the c-statistic. Convergent validity of self-reported "bone loss/deep pockets" and "loose teeth" was assessed; associations of self-report with RA disease characteristics were explored.


Self-report performed similarly in RA and OA, with individual question specificity for periodontitis ≥ 68% and sensitivity from 9.8% to 45%. Question-only models yielded c-statistics of 0.66 to 0.72, whereas risk factor-only models yielded c-statistics of 0.74 to 0.79. The highest-performing models incorporated both self-report questions and periodontitis risk factors, with c-statistics ≥ 0.79. Greater radiographic alveolar bone loss was observed among participants reporting "bone loss/deep pockets" (P < 0.001) and "loose teeth" (P < 0.001). Among patients with RA, "loose teeth," but not other self-report items, was associated with rheumatoid factor positivity (P = 0.047) and higher disease activity (P < 0.001).


Patient self-report, when combined with other risk factors, performs well in identifying periodontitis among patients with RA and OA. Self-report questions related to alveolar bone loss exhibit excellent convergent validity in these patient subsets.


Arthritis, rheumatoid; osteoarthritis; periodontitis; rheumatoid factor; self report; sensitivity and specificity

[Indexed for MEDLINE]

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