ArticleJournal of oral rehabilitation2026
Reliability and Validity of Oral Frailty Index-8: Findings Among Community-Dwelling Adults in Singapore.
Article in Journal of oral rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- Methodological Cautions Regarding OFI-8 Validation in Healthy Community-Dwelling Older Adults.Geriatrics & gerontology international · 2026Article
- Prevalence and associated factors of oral frailty in elderly patients undergoing elective surgery: a secondary analysis of a cross-sectional study.Frontiers in medicine · 2026Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
backgroundOral Frailty Index-8 (OFI-8) is the earliest developed patient-reported measure for screening individuals at risk of oral frailty. However, there is limited information on its psychometric properties.
objectiveTo evaluate the reliability and validity of OFI-8 in measuring oral frailty risk of community-dwelling adults in Singapore.
methodsThe OFI-8 was administered to 227 community-dwelling adults (aged 50 years and above), who then underwent oral health examination for number of functional teeth (FT), Eichner index (EI), oral health assessment tool (OHAT) score and oral frailty five-item checklist (OF-5) score. OFI-8 was assessed for its reliability (internal consistency, test-retest reliability and measurement error) and construct validity (structural, convergent and discriminative validities) based on Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) guidelines for testing patient-reported outcome measures.
resultsThe internal consistency (Cronbach's alpha = 0.61) and test-retest reliability (intra-class correlation coefficient = 0.62) were moderate, and standard error of measurement was 1.26. Confirmatory factor analysis revealed poor model fitting (comparative fit index = 0.77). The total OFI-8 score had moderate correlation with FT (r = -0.47, p < 0.001), EI (τ = 0.36, p < 0.001), weak correlation with OHAT score (r = 0.25, p < 0.001) and a strong correlation with OF-5 scores (r = 0.72, p < 0.001). The cut-off score (≥ 4) for oral frailty risk did not effectively distinguish between individuals with < 20 and ≥ 20 FT (Pearson chi-square test; p = 0.993).
conclusionOFI-8 demonstrated moderate reliability, limited structural validity, moderate convergent validity and moderate discriminative validity in measuring oral frailty risk of community-dwelling adults in Singapore.
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