Transcultural translation-adaptation to Spanish of the Infants' Dermatitis Quality of Life questionnaire for children under four years with atopic dermatitis

Abstract

Atopic dermatitis is observed in up to 20% of children, hence the importance of tools to support its evaluation. To determine the validity and reliability of the Spanish adaptation of the IDQOL questionnaire in patients <4 years of age with atopic dermatitis (AD). Translation and back-translation of the questionnaire; a pilot test was done in 30 children with AD to arrive at a final version. Internal reliability (Cronbach's alpha) and correlation of IDQOL and SCORAD scores (Pearson correlation coefficient) were measured. 102 children aged between two and 48 months were included. The Pearson correlation coefficient (r) of IDQOL and SCORAD scores was 0.697 (p = 0.0001), indicating a high positive correlation. The correlation between the severity measured by the caregiver and the SCORAD score (r = 0.565, p = 0.0001) proved to be low positive. The internal consistency of IDQOL using Cronbach's alpha was 0.84, indicating good consistency of the instrument for assessing quality of life. The IDQOL questionnaire in Spanish is a valid measure of quality of life in patients < 4 years with AD and is useful in monitoring and in clinical trials.