4.2 Article

The reliability of a frailty index may depend on the deficits included

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EUROPEAN GERIATRIC MEDICINE
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SPRINGER
DOI: 10.1007/s41999-022-00734-1

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Frailty index; Older persons; Reliability; Validity

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The validity and reliability of two versions of a frailty index (FI) based on the short form (SF) of the TOPICS-MDS questionnaire were assessed in this study. It was found that the reliability of the TOPICS-SF-FI depends on the presence of disease information.
Purpose Recently, a short version of the TOPICS-MDS questionnaire, the Short Form (SF) was developed. The aim of this study was to assess the validity and reliability of two versions of a frailty index (FI) based on this SF: with or without information on present diseases included.Methods This was a clinical, prospective study of geriatric patients. An FI based on the TOPICS-SF items alone (SF-FI) and an FI with the disease information as additional deficits (MDS-FI) were calculated. Criterion and construct validity and reliability were assessed.Results 95 patients were included. A strong correlation was found between SF-FI and MDS-FI scores (Pearson's r = 0.92). Data supported four out of six hypotheses for the construct validity. However, a Bland-Altman plot and a regression analysis showed that the SF-FI was generally higher than the MDS-FI.Conclusion This study indicates that the reliability of the TOPICS-SF-FI depends on the presence of disease information.

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