Designing a Measure of Body Image: Cognitive Interview Findings from an Adolescent and Young Adult Cancer Sample

<b><i>Purpose:</i></b> A cancer diagnosis in adolescence and young adulthood significantly impacts a person's quality of life, particularly concerning identity, self-esteem, and subsequently, body image. This study aims to develop a psychometrically-sound patient-reported outcome measure of body image for adolescent and young adult (AYA) oncology patients that was guided by the National Institutes of Health's Patient-Reported Outcomes Measurement Information System® (PROMIS) Scientific Standards and our past concept elicitation interviews with AYAs. <b><i>Methods:</i></b> We conducted a multi-step approach involving item identification, refinement, generation; translatability and reading level review; and cognitive interviews. A purposive sample of 25 AYA patients participated, ensuring representation across educational levels, gender, treatment status, and cancer type. <b><i>Results:</i></b> Translatability and reading level reviews facilitated language adjustments. Cognitive interviews revealed that 76% of AYAs found the 50 candidate items assessing body image concerns to be easy to answer. AYAs reported that the body image items captured their lived experiences. Three items were excluded due to comprehension difficulties. <b><i>Conclusion:</i></b> This study addresses the critical gap in validated measures for assessing body image in AYA oncology patients. Interview findings provided evidence for the content validity and comprehensibility for 47 items assessing body image. The next steps involve large-scale psychometric testing to evaluate the reliability and validity of the body image items to form an item bank allowing the design of short forms or use of computerized-adaptive testing. Ultimately, this work lays the foundation for developing interventions to mitigate the impact of cancer on AYAs' body image during diagnosis, treatment, and recovery.