Prevalence of rheumatic diseases in Baix Emporda

Background: In Spain, the prevalence of different rheumatic diseases is known mainly through the EPISER studies coordinated by the Spanish Society of Rheumatology and based on surveys in a population sample. The aim of our study is to describe the prevalence in 2016 of different rheumatic diseases in the population residing in Baix Emporda according to healthcare coding records.Materials and methods: Observational, descriptive and cross-sectional study carried out on the popula-tion attended from 2016 to 2017 in SIBBE (Serveis de Salut Integrats del Baix Emporda), an organizational service that includes all the healthcare facilities in the Baix Emporda area with a unique information sys-tem. Patients >= 20 years of age were selected and the ICD9-CM coding of all their healthcare contacts was analysed according to 11 entities and 28 diseases. The entities were: polyarthritis, spondyloarthri-tis, microcrystalline arthritis, osteoarthritis, soft tissue rheumatism, fibromyalgia, chronic spinal pain, osteoporosis, connective tissue diseases, vasculitis and others. The studied population was assigned to the categories: .with rheumatic disease,.p.ossible rheumatic diseaseand .without rheumatic disease..Results: In total, 71,785 patients were distributed as: 36.2% "with rheumatic disease (n = 25,990); 6.1% with "possible rheumatic disease" (n = 4406) and 57.7% "without rheumatic disease" (n = 41,389). The group .with rheumatic diseases.howed a predominance of women (59.7% vs. 44.9%) and older age (59.1 +/- 17.7 vs. 45.1 +/- 16.2; p < .001) compared to the group .without rheumatic disease.. The presence of rheumatic disease increased progressively with age, being maximum in the group between 55-75 years.Conclusions: 36.2% of our population has some type of rheumatic disease. The estimated prevalence of some rheumatic diseases in the Baix Emporda population is partially consistent with that estimated by the EPISER 2016 study. Rheumatic disease affects women in a greater proportion and is more frequent in patients over 45 years of age.(c) 2021 The Author(s). Published by Elsevier Espan tilde a, S.L.U. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).