Reliability and Validity of the Duke Activity Status Index in Bariatric Surgery Individuals Living with Obesity: Insights into Prognostic Value

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dc.contributor.authorTuran, Hamdiye
dc.contributor.authorYasaci, Zeynal
dc.contributor.authorElkan, Hasan
dc.date.accessioned2026-04-04T13:37:26Z
dc.date.available2026-04-04T13:37:26Z
dc.date.issued2025
dc.departmentİnönü Üniversitesi
dc.description.abstractBackground Obesity is a global health issue that complicates surgical outcomes, particularly in bariatric/metabolic surgery candidates. Assessing functional capacity is critical for optimizing preoperative planning and postoperative care. The Duke Activity Status Index (DASI) is a simple, self-administered questionnaire that estimates functional capacity based on daily activities. This study evaluates the reliability and clinical applicability of the DASI as an alternative to the 6-min walk test (6-MWT) for bariatric/metabolic surgery individuals living with obesity. Methods This cross-sectional study included 126 individuals who are candidates for bariatric/metabolic surgery. Participants completed the DASI and 6-MWT. Test-retest reliability was assessed using intraclass correlation coefficients (ICCs), and validity was evaluated through correlations with 6-MWT results. The agreement was measured using the standard error of measurement (SEM) and minimal detectable change (MDC). Results The DASI demonstrated excellent internal consistency (Cronbach's alpha = 0.86) and test-retest reliability (ICC = 0.97, 95% CI: 0.96-0.98). A strong correlation was observed between DASI and 6-MWT scores (r = 0.603; p < 0.001). ROC analysis showed an optimal cut-off score of 24.1 (AUC = 0.836), with 72.2% sensitivity and 74.1% specificity. The SEM and MDC values were 2.36 and 6.54 points, respectively. Conclusions The DASI is a reliable, accessible tool for bariatric surgeons to assess functional capacity in candidates for bariatric/metabolic surgery. Its simplicity, strong correlation with performance-based measures, and minimal resource requirements make it ideal for preoperative evaluations, particularly in resource-limited settings.
dc.identifier.doi10.1007/s11695-025-07714-x
dc.identifier.endpage866
dc.identifier.issn0960-8923
dc.identifier.issn1708-0428
dc.identifier.issue3
dc.identifier.pmid39888541
dc.identifier.scopus2-s2.0-85217237229
dc.identifier.scopusqualityQ1
dc.identifier.startpage860
dc.identifier.urihttps://doi.org/10.1007/s11695-025-07714-x
dc.identifier.urihttps://hdl.handle.net/11616/109802
dc.identifier.volume35
dc.identifier.wosWOS:001412179600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofObesity Surgery
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250329
dc.subjectObesity
dc.subjectFunctional capacity
dc.subjectDASI
dc.subject6-MWT
dc.titleReliability and Validity of the Duke Activity Status Index in Bariatric Surgery Individuals Living with Obesity: Insights into Prognostic Value
dc.typeArticle

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