The Bulgarian version of the Childhood Health Assessment Questionnaire (CHAQ) and the Child Health Questionnaire (CHQ)

We report herein the results of the cross-cultural adaptation and validation into the Bulgarian language of the parents version of two health related quality of lift, instruments. The Childhood Health Assessment Questionnaire (CHAQ) is a disease specific health instrument that measures functional ability in daily living activities in children with juvenile idiopathic arthritis (JIA). The Child Health Questionnaire (CHQ) is a generic health instrument designed to capture the physical and psychosocial well-being of children independently front the underlying disease. The Bulgarian CHAQ CHQ were fully validated with I forward and I backward translations. 137 subjects were enrolled: 77 patients with JIA (36% systemic onset, 30% polyarticular onset, 4% extended oligoarticular subtype, and 30% persistent oligoarticular subtype) and 60 healthy children. The CHAQ clinically discriminated between healthy subjects and JIA patients, with the polyarticular and extended oligoarticular subtypes havi...