Liron Caplan

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Guidelines and recommendations developed and/or endorsed by the American College of Rheumatology (ACR) are intended to provide guidance for particular patterns of practice and not to dictate the care of a particular patient. The ACR considers adherence to these guidelines and recommendations to be voluntary, with the ultimate determination regarding their(More)
OBJECTIVE Although the systematic measurement of disease activity facilitates clinical decision making in rheumatoid arthritis (RA), no recommendations currently exist on which measures should be applied in clinical practice in the US. The American College of Rheumatology (ACR) convened a Working Group (WG) to comprehensively evaluate the validity,(More)
BACKGROUND Herpes zoster occurs more commonly in patients taking immunosuppressive medications, although the risk associated with different medications is poorly understood. METHODS We conducted a retrospective cohort study involving 20,357 patients who were followed in the Veterans Affairs healthcare system and treated for rheumatoid arthritis from(More)
OBJECTIVE 25-hydroxy-vitamin D (25-OH-D) insufficiency/deficiency is increasingly prevalent and has been associated with many chronic diseases, including rheumatoid arthritis (RA). Our purpose was to define the prevalence and associations of 25-OH-D insufficiency/deficiency in a cohort of US veterans with RA. METHODS vitamin D status (25-OH-D) was(More)
OBJECTIVE To provide evidence-based recommendations for the treatment of patients with ankylosing spondylitis (AS) and nonradiographic axial spondyloarthritis (SpA). METHODS A core group led the development of the recommendations, starting with the treatment questions. A literature review group conducted systematic literature reviews of studies that(More)
Medications used to treat rheumatoid arthritis (RA) may confer an increased risk of infection. We conducted a retrospective cohort study of veterans with RA followed in the United States Department of Veterans Affairs health care system from October 1998 through September 2005. Risk of hospitalization for infection associated with tumor necrosis factor(More)
OBJECTIVE Pneumonia is a major cause of mortality and morbidity in rheumatoid arthritis (RA). This study was undertaken to determine the rate and predictors of hospitalization for pneumonia and the extent to which specific RA treatments increase pneumonia risk. METHODS RA patients (n = 16,788) were assessed semiannually for 3.5 years. Pneumonia was(More)
BACKGROUND Health literacy (HL) is associated with outcomes in many conditions, but little is known about its impact on arthritic diseases. OBJECTIVES We sought to determine whether HL is related to disease activity and severity in patients with rheumatoid arthritis (RA). METHODS English-speaking adult RA patients were recruited for this cross-sectional(More)
OBJECTIVE This study evaluates whether depression is a risk factor for incident myocardial infarction (MI) in Department of Veterans Affairs (VA) patients with rheumatoid arthritis (RA) between 30 and 79 years of age. METHODS We used a retrospective cohort study of 15,634 patients with RA. Diagnoses and sociodemographic data were obtained from VA(More)
OBJECTIVE To examine associations of anti-cyclic citrullinated peptide (aCCP) antibody and rheumatoid factor (RF) concentrations with future disease activity in men with rheumatoid arthritis (RA). METHODS Outcome measures were examined in male US veterans with RA and included (1) proportion of observations in remission (disease activity score (DAS28) < or(More)