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1.
Arthritis Care Res (Hoboken) ; 66(4): 600-7, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24115739

ABSTRACT

OBJECTIVE: We compared the prevalence and the clustering of the metabolic syndrome (MetS) components (obese body mass index [BMI; ≥30 kg/m(2) ], hypertriglyceridemia, low high-density lipids, hypertension, and diabetes mellitus) in patients with psoriatic arthritis (PsA) and rheumatoid arthritis (RA) in the Consortium of Rheumatology Researchers of North America (CORRONA) Registry. METHODS: We included CORRONA participants with a rheumatologist-confirmed clinical diagnosis of PsA or RA with complete data. We used a modified definition of MetS that did not include insulin resistance, waist circumference, or blood pressure measurements. Logistic regression models were adjusted for age, sex, and race. RESULTS: In the overall CORRONA population, the rates of diabetes mellitus and obesity were significantly higher in PsA compared with RA. In 294 PsA and 1,162 RA participants who had lipids measured, the overall prevalence of MetS in PsA versus RA was 27% versus 19%. The odds ratio (OR) of MetS in PsA versus RA was 1.44 (95% confidence interval [95% CI] 1.05-1.96, P = 0.02). The prevalence of hypertriglyceridemia was higher in PsA compared with RA (38% versus 28%; OR 1.51 [95% CI 1.15-1.98], P = 0.003). The prevalence of type 2 diabetes mellitus was also higher in PsA compared with RA (15% versus 11%; OR 1.56 [95% CI 1.07-2.28], P = 0.02) in the adjusted model. Similarly, higher rates of hypertriglyceridemia and diabetes mellitus were observed in the subgroup of PsA and RA patients with obese BMI. CONCLUSION: Compared with RA, PsA is associated with higher rates of obesity, diabetes mellitus, and hypertriglyceridemia.


Subject(s)
Arthritis, Psoriatic/epidemiology , Arthritis, Rheumatoid/epidemiology , Metabolic Syndrome/epidemiology , Registries , Adult , Aged , Arthritis, Psoriatic/blood , Arthritis, Psoriatic/complications , Arthritis, Rheumatoid/blood , Arthritis, Rheumatoid/complications , Cross-Sectional Studies , Diabetes Complications/epidemiology , Female , Humans , Lipids/blood , Male , Metabolic Syndrome/complications , Middle Aged , Obesity/complications , Obesity/epidemiology , Prevalence , United States/epidemiology
2.
BMJ Open ; 2(5)2012.
Article in English | MEDLINE | ID: mdl-23035013

ABSTRACT

OBJECTIVES: The new 2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) criteria for rheumatoid arthritis (RA) have been designed to classify early onset RA, but has not been studied to identify RA in patients with arthritis seen in routine clinical care where correct 'classification' of patients, when they are not selected for having RA would be important. DESIGN: Prospective, consecutive patients cohort. SETTING: Outpatient clinic of a university rheumatology centre. PARTICIPANTS: A total of 126 patients with joint symptoms were consecutively recruited. INTERVENTIONS: The ACR/EULAR RA criteria were applied, with questions followed by a targeted musculoskeletal exam. The gold standard for the diagnosis of RA was the primary rheumatologist's diagnosis. PRIMARY OUTCOME MEASURE: Number of patients with non-RA diagnosis who were classified as having RA by the new classification criteria. RESULTS: The sensitivity and specificity of the 2010 criteria in classifying RA were 97% and 55%, respectively, compared with the 1987 RA criteria which were 93% and 76%, respectively. The 2010 criteria as applied to this group of patients had a poorer positive predictive (44% vs 61%) and a similar negative predictive value (98% vs 97%) compared with the 1987 criteria. More specifically, 66.7% of systemic lupus erythematosus patients, 50% of osteoarthritis, 37.5% of psoriatic arthritis and 27.2% of others fulfilled the new criteria and could have been classified as RA. CONCLUSIONS: In this, we believe, the first study to examine the new 2010 ACR/EULAR RA criteria among consecutive patients seen in routine care, we found the criteria to have low specificity, and therefore incorrectly label those as having RA when, in fact, they may have a different type of inflammatory arthritis. Physicians need to be aware of this when applying the new criteria for classifying their patients for any purpose.

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