TY - JOUR
T1 - Rasch analysis of the Geriatric Oral Health Assessment Index
AU - Franchignoni, Marco
AU - Giordano, Andrea
AU - Levrini, Luca
AU - Ferriero, Giorgio
AU - Franchignoni, Franco
PY - 2010/6
Y1 - 2010/6
N2 - The aim of this study was to perform a psychometric analysis on the Geriatric Oral Health Assessment Index (GOHAI) using Rasch analysis, a modern statistical approach for examining rating scale data. Eighty-five subjects, long-term residents of a nursing home, were analysed using the GOHAI. The mean GOHAI score (range 0-48) was 11. Two of the five rating categories (1 = seldom; 3 = 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/always), the new model met the set criteria. Item 12 'sensitivity to hot, cold or sweets' was misfitting. Rasch analysis showed both the unidimensionality of (at least) 11 of the 12 items of GOHAI, and the possibility of simplifying the structure of its rating scale.
AB - The aim of this study was to perform a psychometric analysis on the Geriatric Oral Health Assessment Index (GOHAI) using Rasch analysis, a modern statistical approach for examining rating scale data. Eighty-five subjects, long-term residents of a nursing home, were analysed using the GOHAI. The mean GOHAI score (range 0-48) was 11. Two of the five rating categories (1 = seldom; 3 = 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/always), the new model met the set criteria. Item 12 'sensitivity to hot, cold or sweets' was misfitting. Rasch analysis showed both the unidimensionality of (at least) 11 of the 12 items of GOHAI, and the possibility of simplifying the structure of its rating scale.
KW - Oral health
KW - Outcomes assessment
KW - Quality of life
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U2 - 10.1111/j.1600-0722.2010.00735.x
DO - 10.1111/j.1600-0722.2010.00735.x
M3 - Article
C2 - 20572862
AN - SCOPUS:77953997786
VL - 118
SP - 278
EP - 283
JO - European Journal of Oral Sciences
JF - European Journal of Oral Sciences
SN - 0909-8836
IS - 3
ER -