Transcultural adaptation and validation of the Pectus Carinatum Body Image Quality of Life Questionnaire (PeCBI-QOL) into Spanish.

Introduction: The primary objective was to conduct the translation and subsequent transcultural adaptation into Spanish of the Pectus Carinatum Body Image Quality of Life questionnaire (PeCBI-QOL), designed to assess Pectus Carinatum (PC)'s quality of life impact.

Material and methods: A translation and transcultural adaptation process was carried out according to WHO guidelines. The process consisted of the following steps: direct translation, Delphi pilot study, retro-translation, cognitive survey to patients, and analysis/validation.

Results: 42 patients and their respective caregivers replied to the validation questionnaire. Principal component factor analysis of the patient questionnaire showed a 4-factor solution, whereas in the caregiver questionnaire, it showed a 3-factor one. The questionnaires demonstrated good reliability, with internal consistency alpha coefficients of 0.78 and 0.85, respectively. The subscale-based concordance analysis also revealed good results in terms of reliability, except for the Motivation/treatment adhesion subscale in the patient questionnaire.

Conclusion: The Spanish version of the PeCBI-QOL questionnaire is valid and reliable for assessing PC's impact on patients' body image and quality of life.