THU0125 CARDIOVASCULAR DISEASE RISK FACTORS MAY NEGATIVELY IMPACT RHEUMATOID ARTHRITIS DISEASE OUTCOMES: FINDINGS FROM THE ONTARIO BEST PRACTICES RESEARCH INITIATIVE

Abstract

Background Rheumatoid arthritis increases the risk of cardiovascular disease (CVD). Less is known about the direct influence of CVD and CVD risk factors (RF) on RA outcomes, but higher comorbidity burden has been suggested to adversely affect RA treatment response1-2. Objectives We tested our hypothesis that CVD risk factors (RFs) alone, in the absence of CVD, are associated with higher disease activity and disability in RA. Methods The Ontario Best Practices Research Initiative (OBRI) is a clinical registry of RA patients followed in routine care. RA subjects with complete data to calculate disease activity according to the Disease Activity Score-28 (DAS28), Clinical Disease Activity Index (CDAI), 28 swollen joint count (SJC28) and functional status (Health Assessment Questionnaire Disability Index [HAQ-DI]) at cohort entry were selected. Patients were divided into mutually exclusive groups by baseline CVD status as: (1) no CVD/no CVD RFs; (2) CVD including coronary artery disease, myocardial infarction, cerebral vascular accidents, and peripheral arterial disease; (3) no CVD but CVD RFs including hypertension (HTN), dyslipidemia (DLD), diabetes (DM), or smoking. We performed separate linear regression analyses for each outcome, adjusted for baseline clinical and demographic variables, to determine the independent effect of CVD status on disease outcomes at baseline and one year follow-up. Results Of 2033 patients examined, 49.5% had no CVD, 5.4% had CVD and 45.1% had CVD RFs alone. The most common RF was HTN (33%) followed by DLD (19.7%), current smoking (17%), and DM (8.1%). At cohort entry, having a CVD RF was associated with significantly higher DAS28 (β 0.13, 95%CI 0.002-0.26, p 0.04) and HAQ-DI (β 0.16, 95%CI 0.10-0.23, p Conclusion Even in the absence of CVD, traditional CVD RF are associated with greater RA disease severity and disability both at baseline and one year. Self-perceived impact of comorbidity (patient global assessment of health) may be driving this relationship. Moreover, patients with CVD RF maybe more treatment-resistant, suggesting that co-management of CVD RF in RA patients may be beneficial on both fronts.