CRP and periodontitis: A subgroup analysis showed that the risk of developing arterial hypertension was highest in patients with periodontitis and up to 40 years of age [OR 1.694 (95% CI 1.196–2.398)], with BMI > 25 [OR 1.395 (95% CI 1.104–1.763)], with increased plasma LDL [OR 1.582 (95% CI 1.185–2.112)], or with an increased concentration of C-reactive protein in plasma [OR 1.783 (95% CI 0.298–10.671)].