Diagnostic accuracy of a combination of salivary hemoglobin levels, self report questionnaires, and age in periodontitis screening
Purpose This study evaluated the predictive performance of a combination of self report questionnaires, salivary hemoglobin levels, and age as a non invasive screening method for periodontitis. Methods The periodontitis status of 202 adults was examined using salivary hemoglobin levels, responses to 10 questions on a self report questionnaire, and the Community Periodontal Index (CPI) The ability of those two variables and the combination thereof with age to predict the presence of CPI scores of 3 4 and 4 was assessed using logistic regression and receiver operating characteristic (ROC) curve analysis. Results CPI scores of 3 4 and 4 were present among 79.7% and 46.5% of the sample, respectively. The area under the ROC curves (AUROCs) of salivary hemoglobin levels for predicting prevalence of CPI scores of 3 4 and 4 were 0.63 and 0.67, respectively (with sensitivity values of 71% and 60% and specificity values of 56% and 72% respectively) Two distinct sets of five questions were associated with CPI scores of 3 4 and 4, with AUROCs of 0.73 and 0.71, sensitivity values of 76% and 66% and specificity values of 63% and 69% The combined model incorporating both variables and age showed the best predictive performance, with AUROCs of 0.78 and 0.76, sensitivity values of 71% and 65% and specificity values of 68% and 77% for CPI scores of 3 4 and 4, respectively. Conclusions The combination of salivary hemoglobin levels and self report questionnaires was shown to be a valuable screening method for detecting periodontitis.
Journal of periodontal implant science