Investigation of Dysphagia Symptoms and their Association with Subjective Symptoms in Inhabitants of an Island

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Objective: With the recent aging trend in the Japanese population, dysphagia appears to be increasing. However, few epidemiologic surveys have been conducted to determine the prevalence of dysphagia in local inhabitants. Ohkuma et al. prepared a highly reliable questionnaire using a simple test and safe examination method. We investigated the presence/absence of symptoms of dysphagia in local inhabitants, evaluated their association with subjective symptoms, and examined whether the inhabitants were following a particular diet, which is the most important factor in management of dysphagia.Methods: A cross-sectional study involving 743 inhabitants (age: over 20) of an isolated island was performed. Each subject was asked basic questions (awareness about the presence/absence of dysphagia and dietary habits), and the data was analyzed by chi-square test. Based on their responses, dysphagia incidence was determined and rated on a 3-category scale (severe, mild, and no dysphagia).Results: Responses were recollected from 368 subjects (response rate, 49.5%). The percentage of subjects aware of dysphagia in the severe, mild, and no dysphagia groups was 13.8%, 3.2%, and 0%, respectively and the percentage of subjects who changed their dietary habits was 17.2%, 2.6%, and 0%. These percentages were significantly higher in the severe group than in the mild and no dysphagia groups, though the value was less than 20% in the 3 groups.Conclusion: Most subjects in the present study were unaware of dysphagia, suggesting that patients with dysphagia tend to be unaware of the key symptoms of dysphagia.

Investigation of Dysphagia Symptoms and their Association with Subjective Symptoms in Inhabitants of an Island

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