Open AccessDevelopment and validation of the Functional Rhinoplasty Outcome Inventory 17 (FROI-17)
Author(s) -
Cem Bulut,
Frank Wallner,
Peter K. Plinkert,
Ingo Baumann
Publication year - 2014
Publication title -
rhinology (amsterdam. online)/rhinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.275
H-Index - 57
eISSN - 1996-8604
pISSN - 0300-0729
DOI - 10.4193/rhino13.098
Subject(s) - medicine , rhinoplasty , construct validity , reliability (semiconductor) , quality of life (healthcare) , concurrent validity , internal consistency , prospective cohort study , physical therapy , psychometrics , clinical psychology , surgery , nose , nursing , power (physics) , physics , quantum mechanics
Statement of problem: Quality of life aspects become more and more important in all fields of medicine. There is a lack of such instruments for septorhinoplasty that cover sufficiently both functional and aesthetic aspects. Methodology: In Phase 1, a group of experts identified 22 questions that represent the symptoms of patients with nasal deformities, which undergo a functional and aesthetic nasal surgery. Forty-one patients filled out the questionnaires before septorhinoplasty. The item assessment and item reduction was performed by a sequential statistical analysis, which included a single item analysis, an assessment of internal consistency, construct validity, the divergence validity and a factor analysis. The resulting 17-item questionnaire was used in a prospective validation study (Phase 2) in which 103 patients were enrolled. Statistical analysis included testing of validity, reliability and responsiveness. Results: In Phase 2 data analysis revealed a good internal consistency and significant test-retest reliability. A literature survey confirmed that the relevant items were included in the questionnaire. We found significant item-score-correlations. Furthermore, the existence of concurrent validity was confirmed. Standardized Response Mean (SRM) as a measure for sensitivity to change indicated moderate to large effects. Conclusion: FROI-17 is a valid quality of life instrument for use in septorhinoplasty patients. The instrument is now available for prospective data collection in future septorhinoplasty outcome studies.