Abstract
ObjectivesTo develop a Screening for Oral Frailty Tool (SOFT) and evaluate its reliability and validity among Chinese community-dwelling older adults. DesignCross-sectional analysis. Setting and ParticipantsThe study was conducted as part of an ongoing community-based prospective study in Shanghai. A total of 307 older adults, aged between 60 and 96 years, participated in the study. MethodsThis study was conducted in 3 stages: item development, scale development, and scale evaluation. This study was based on a visual model depicting the deterioration of oral function, and a draft scale was generated based on a literature review, existing scales, expert consultations, and cognitive interviews. Between December 2023 and February 2024, the validity and reliability of the SOFT were evaluated using a questionnaire administered to 307 community-dwelling older adults. Data including demographics, frailty, and sarcopenia were collected. ResultsThe oral frailty scale comprises 6 items, including number of teeth, difficulty in swallowing, difficulty in chewing, difficulty in articulatory oral motor, dry mouth, and oral pain, and is assessed using a yes or no question. The correlations ranged from 0.40 to 0.66 when correlating each item with the total score of the scale. Using frailty and sarcopenia as criteria, the area under the curve for the SOFT was 0.71. The optimal cutoff for the SOFT was 2, using frailty as a criterion, with a higher Youden index and a high negative predictive value (94.9%), but a low positive predictive value (19.3%). The SOFT showed low internal consistency (Kuder-Richardson formula 20 coefficients 0.50) and good test-retest reliability (intraclass correlation coefficients 0.86). Conclusions and ImplicationsThe SOFT does not require specialized equipment and is not affected by cultural differences. It can be used for oral frailty screening in Chinese community-dwelling older adults and is simple and rapid.
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