TY  - JOUR
AU  - Corrêa, Laura
AU  - Júdice, André
AU  - Scoz, Robson
AU  - Machado, Vanessa
AU  - Mendes, José João
AU  - Proença, Luís
AU  - Botelho, João
AU  - Ferreira, Luciano
PY  - 2024
DA  - 2024/10/28
TI  - Portuguese Version of the Oral Frailty Index-8: Instrument Validation Study
JO  - Interact J Med Res
SP  - e49975
VL  - 13
KW  - oral frailty
KW  - oral health
KW  - functional disability
KW  - frailty
KW  - aging
KW  - dentistry
KW  - confirmatory factor analysis
KW  - psychometric validity
KW  - questionnaire development
AB  - Background: The concept of oral frailty has gained scientific and clinical relevance in recent years, and early detection can facilitate timely intervention to manage its progression. The Oral Frailty Index-8 (OFI-8) was developed to assess community-dwelling older adults at risk for oral frailty. Objective: This study aims to investigate the psychometric validity of the OFI-8 in the Portuguese population, named the Portuguese version of the OFI-8 (OFI-8-PT), which may serve as a reference for future studies related to longevity and oral function. Methods: This study included 2 main phases, involving patients aged 60 years or older, Portuguese speakers, and those who consented to participate in the study. First, the researchers translated and cross-culturally adapted the original questionnaire to make it suitable for native Portuguese speakers. The translated tool was then assessed for psychometric validation, which consisted of test-retest reliability, internal consistency, construct validity, and sex invariance measurement. Results: A total of 159 older adults participated in the baseline survey, with almost equal numbers of male (n=79, 49.7%) and female participants (n=80, 50.3%). The OFI-8-PT demonstrated good reliability (Cronbach α=0.95) and construct validity (goodness-of-fit index=0.96; comparative fit index=0.85; and root mean square error of approximation=0.05, 90% CI 0.00-0.09). The study found sex invariance, indicating that the OFI-8-PT is equally valid for male and female participants, and the tested-retest reliability of the OFI-8-PT was good, indicating consistent results over time. Conclusions: The OFI-8-PT showed psychometric validity and good reliability to be used in the Portuguese population. 
SN  - 1929-073X
UR  - https://www.i-jmr.org/2024/1/e49975
UR  - https://doi.org/10.2196/49975
UR  - http://www.ncbi.nlm.nih.gov/pubmed/39466299
DO  - 10.2196/49975
ID  - info:doi/10.2196/49975
ER  -