Assessment

Cross-cultural adaptation and psychometric evaluation of the Childhood Health Assessment Questionnaire (CHAQ) and the Child Health Questionnaire (CHQ) in 32 countries. Review of the general methodology

N. Ruperto1, A. Ravelli2, A. Pistorio3, C. Malattia2, S. Cavuto1, L. Gado-West2, A. Tortorelli2, J.M. Landgraf 4, G. Singh5, A. Martini2, for the Paediatric Rheumatology International Trials Organisation (PRINTO)

Laboratorio di Informatica Medica, Pediatria Generale e Reumatologia and 3 Servizio di Epidemiologia Clinica e Biometria, IRCCS San Matteo, University of Pavia, Pavia, Italy; 4HealthAct, Boston, MA; 5Medicine, Immunology & Rheumatology, Stanford University, Palo Alto, CA, USA.

2 1

Supported by a grant from the European Union (BMH4-983531 CA), by IRCCS Policlinico S. Matteo (Pavia, Italy), and by Telecom Italy. Please address correspondence and reprint requests to: Paediatric Rheumatology International Trials Organisation (PRINTO), IRCCS Policlinico S. Matteo, Pediatria Generale e Reumatologia, Piazzale Golgi, 2, 27100 Pavia, Italy. E-mail: nruperto@smatteo.pv.it WWW: http://www.medit.it/printo/ Clin Exp Rheumatol 2001; 19 (Suppl. 23): S1-S9.

© COPYRIGHT CLINICAL AND EXPERIMENTAL RHEUMATOLOGY 2001. Key words: Childhood Health Assessment Questionnaire (CHAQ), Child Health Questionnaire (CHQ), health related quality of life, cross cultural adaptation and psychometric evaluation methodology, juvenile idiopathic arthritis (JIA), healthy children, review.

ABSTRACT The aim of this project was to cross-cultur ally adapt and validate the American Eng lish version of the Childhood Health As sessment Questionnaire (CHAQ) and of the Child Health Questionnaire (CHQ) in the 32 different member countries of the Paedi atric Rheumatology International Trials Organisation (PRINTO). This effort forms part of an international study supported by the European Union to evaluate the healthrelated quality of life in children with juve nile idiopathic arthritis (JIA) as compared...