Paras Karmacharya1, Kerry Wright2, Sara J Achenbach3, Cynthia S Crowson4, Alexis Ogdie5, Delamo Bekele2, Alí Duarte-García6, Floranne C Ernste2, Megha M Tollefson7, John M Davis Iii2. 1. Division of Rheumatology, Mayo Clinic, Rochester, MN, United States; Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States. Electronic address: paraskarmacharya@gmail.com. 2. Division of Rheumatology, Mayo Clinic, Rochester, MN, United States. 3. Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, United States. 4. Division of Rheumatology, Mayo Clinic, Rochester, MN, United States; Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, United States. 5. Departments of Medicine Rheumatology and Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States. 6. Division of Rheumatology, Mayo Clinic, Rochester, MN, United States; Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States. 7. Departments of Dermatology and Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, United States.
Abstract
OBJECTIVE: To identify demographic and clinical characteristics associated with time between psoriasis and psoriatic arthritis (PsA). METHODS: A retrospective, population-based cohort of incident PsA patients ≥18 years (2000-17) from Olmsted County, MN was identified. PsA patients were divided into two groups: patients with concurrent psoriasis and PsA (within 1 year), and patients with psoriasis before PsA (>1 year). Patients with PsA prior to psoriasis were excluded. Age- and sex-adjusted logistic regression models were used to examine factors associated with the time between psoriasis and PsA diagnosis. RESULTS: Among 164 patients with incident PsA, 158 had a current or personal history of psoriasis. The mean (SD) age at PsA diagnosis was 46.3 (12.0) years, and 46% were females. The median (interquartile range) time from psoriasis to PsA was 35.5 (0.8-153.4) months. 64 patients (41%) patients had concurrent psoriasis and PsA while 94 (59%) had onset of psoriasis before PsA. The estimated age at onset of psoriasis symptom (OR per 10-year decrease = 1.63, 95% CI: 1.26-2.11) and psoriasis severity (OR = 3.65, 95% CI: 1.18-11.32 for severe vs. mild) were associated with having a psoriasis diagnosis more than one year prior to incident PsA. CONCLUSION: In this population-based study, approximately 60% of the patients had psoriasis before PsA, and the rest had concurrent psoriasis and PsA. Patients with lower age at psoriasis onset or severe psoriasis were more likely to have a longer time to transition from psoriasis to PsA.
OBJECTIVE: To identify demographic and clinical characteristics associated with time between psoriasis and psoriatic arthritis (PsA). METHODS: A retrospective, population-based cohort of incident PsA patients ≥18 years (2000-17) from Olmsted County, MN was identified. PsA patients were divided into two groups: patients with concurrent psoriasis and PsA (within 1 year), and patients with psoriasis before PsA (>1 year). Patients with PsA prior to psoriasis were excluded. Age- and sex-adjusted logistic regression models were used to examine factors associated with the time between psoriasis and PsA diagnosis. RESULTS: Among 164 patients with incident PsA, 158 had a current or personal history of psoriasis. The mean (SD) age at PsA diagnosis was 46.3 (12.0) years, and 46% were females. The median (interquartile range) time from psoriasis to PsA was 35.5 (0.8-153.4) months. 64 patients (41%) patients had concurrent psoriasis and PsA while 94 (59%) had onset of psoriasis before PsA. The estimated age at onset of psoriasis symptom (OR per 10-year decrease = 1.63, 95% CI: 1.26-2.11) and psoriasis severity (OR = 3.65, 95% CI: 1.18-11.32 for severe vs. mild) were associated with having a psoriasis diagnosis more than one year prior to incident PsA. CONCLUSION: In this population-based study, approximately 60% of the patients had psoriasis before PsA, and the rest had concurrent psoriasis and PsA. Patients with lower age at psoriasis onset or severe psoriasis were more likely to have a longer time to transition from psoriasis to PsA.
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