Aim. - Gastrointestinal quality of life index (GIQLI) was initiated in Germ
any. The aim of this study was to validate its French version (translation)
.
Methods. - The questionnaire includes 36 items asking about symptoms, physi
cal status, emotions, social dysfunction, and effects of medical treatment.
The questionnaire has been applied to 615 persons: 335 healthy individuals
and 280 patients. Responsiveness and absolute and relative scores were cal
culated in both groups. Psychometric analysis was done by measuring the val
idity (convergent and discriminant) and internal consistency.
Results. - The responsiveness was 93 %. The mean score was 126 for healthy
individuals and 96 for patients (P < 0.00001). The validity of the question
naire (both convergent and discriminant) and the internal consistency were
demonstrated. Clinical validity was also suggested by the differences betwe
en healthy individuals and patients.
Conclusion. - This study allowed the psychometric validation of the French
version of GIQLI. This index could be used ill France as a reliable method
for measuring quality of life related to gastrointestinal diseases.