CRP and gastroesophageal reflux disease: For example, for DAS-CRP, normal blood pressure subjects showed an OR of RA disease activity equal to 0.47 (95% CI: 0.22–1.00), as compared to the overall OR of 0.39 (95% CI: 0.21–0.74), for the highest versus the lowest category of the VUFA DP; similarly, subjects not reporting gastro-esophageal reflux or gastritis had an OR of 0.37 (95% CI: 0.18–0.79) for the same category of the VUFA DP.