Proprietà psicometriche della versione italiana dell' Oral Health Impact Profile forma ridotta (OHIP-14)

Translated title of the contribution: The psychometric property of the Italian version of a short-form Oral Health Impact Profile (OHIP-14)

Marco Franchignoni, Andrea Giordano, Elisa Brigatti, Mario Migliario, Luca Levrini, Giorgio Ferriero

Research output: Contribution to journalArticle

Abstract

Aim of this study was to perform a comprehensive psychometric analysis of the Italian version of the Oral Health Impact Profile short-form (OHIP-14) - a questionnaire analysing the oral health-related quality of life - using both classical test theory and Rasch analysis. Eighty-five subjects, residents in a long-term nursing home, were analysed using the OHIP-14, Geriatric Oral Health Assessment Instrument (GOHAI) and a global clinical judgement. Two of the five rating categories (1 = almost never; 3 = quite often) did not comply with the Rasch criteria for category functioning. After collapsing rating categories into a three-level rating scale (0 = never; 1 = sometimes; 2 = often), the new model met the set criteria. Item 12 ('difficulty doing usual jobs') was slightly underfilling. At the principal component analysis on the standardized residuals, item 9 ('difficulty to relax') and 11 ('irritable with other people') showed a high correlation (r=0.66). This indicates that they may not be locally independent. Rasch analysis showed both the substantial unidimensionality of OHIP-14, and the possibility of simplifying the structure of its rating scale. Further studies are needed to confirm the stability of these findings in different testing situations.

Original languageItalian
JournalGiornale Italiano di Medicina del Lavoro ed Ergonomia
Volume32
Issue number3 SUPPL. B
Publication statusPublished - Jul 2010

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ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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