Abstract
To verify the reliability and validity and develop an English version of an instrument (Kuchi-Kara Taberu Index (KT Index)) to comprehensively assess and intervene in problems with eating and swallowing. Multicenter cross-sectional study. Nursing homes. Individuals aged 65 and older (mean age 88.3 ± 6.8; 80.0% female) who had lived in a nursing home for longer than 1 month (N = 115). The KT index consisted of 13 items: desire to eat, overall condition, respiratory condition, oral condition, cognitive function while eating, oral preparatory and propulsive phases, dysphagia severity, position and endurance while eating, eating, daily life, food intake level, food modification, and nutrition. Weighted kappa coefficients, Cronbach alpha, and Spearman rank correlation coefficients were determined. Weighted kappa values in the inter- and intrarater reliability tests ranged from 0.54 to 0.96 and 0.68 to 0.98, respectively. Cronbach alpha was 0.892. Spearman rank correlation coefficients (r) between the total KT index and external criteria were determined (Functional Oral Intake Scale, r = 0.790; Barthel Index, r = 0.830; Mini Nutritional Assessment Short Form, r = 0.582; Cognitive Performance Scale, r = -0.673; all P < .001). Similar correlations were observed when some items related to each external criterion were removed from the total KT index. Translation-retranslation procedures were conducted to develop an English version of the KT index. The study provided evidence of the reliability and validity of the KT index and developed an English version. Future studies regarding validation of health-related quality of life indices and their effect on clinical courses of eating and swallowing conditions are needed.
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