Online first

Acta Reumatológica Portuguesa - Online First: 2021-01-29
Original article

Association of body mass index with Juvenile Idiopathic Arthritis disease activity: a Portuguese and Brazilian collaborative analysis

Neto A, Mourão AF, Oliveira-Ramos F, Campanilho-Marques R, Estanqueiro P, Salgado M, Guedes M, Piotto D, Aikawa NE, Gomes JM, Cabral M, Conde M, Figueira R, Santos MJ, Fonseca JE, Terreri MT, Canhão H


Objective: To investigate the relationship between body mass index (BMI) and disease activity in patients with Juvenile Idiopathic Arthritis (JIA). Methods: Patients with JIA, aged ≤18 years, registered at the Rheumatic Diseases Portuguese Register ( in Portugal and Brazil were included. Age- and sex-specific BMI percentiles were calculated based on WHO growth standard charts and categorized into underweight (P