Validation of the Short-Form 36 for Adolescents Undergoing Reduction Mammaplasty

Abstract

Background: Health-related quality of life improvements after reduction mammaplasty have been reported by patients. Although instruments exist for adults, a validated outcomes survey is not available for adolescents. This study aims to validate the Short-Form 36 (SF-36) for adolescents undergoing reduction mammaplasty. Methods: Patients aged 12-21 years were prospectively recruited between 2008 and 2021 to unaffected or macromastia cohorts. Patients completed four baseline surveys: SF-36, Rosenberg Self-esteem Scale, Breast-related Symptoms Questionnaire, and Eating Attitudes Test. Surveys were repeated at 6 and 12 months postoperatively (macromastia cohort), and at 6 and 12 months from baseline (unaffected cohort). Content, construct, and longitudinal validity were assessed. Results: A total of 258 patients with macromastia (median age: 17.5 years), and 128 unaffected patients (median age: 17.0 years) were included. Content validity was established, and construct validity was fulfilled: internal consistency was confirmed for all domains (Cronbach alpha >0.7); convergent validity was satisfied through expected correlations between the SF-36 and Rosenberg Self-esteem Scale, Breast-related Symptoms Questionnaire, and Eating Attitudes Test, and known-groups validity was established through significantly lower mean scores in all SF-36 domains in the macromastia cohort compared with unaffected patients. Longitudinal validity was established by significant improvements in domain scores from baseline to 6 and 12 months postoperatively in patients with macromastia (P < 0.05, all). Conclusions: The SF-36 is a valid instrument for adolescents undergoing reduction mammaplasty. Although other instruments have been used for older patients, we recommend the SF-36 when assessing health-related quality of life changes in younger populations.