CRP and periodontitis: Fig 2. shows the Kaplan–Meier survival curve for mortality. Mortality was found to be higher among the participants with periodontitis (p < 0.001) and CRP levels of > 0.5 mg/dL (p = 0.027). The group without periodontitis and CRP levels of ≤ 0.5 mg/dL was found to have the best survival on dividing the groups according to the presence of periodontitis and CRP levels (Fig 2).