Introduction: The group of frail older adults is increasing due to aging and the extension of life expectancy, and they are the fastest-growing group in primary care. Frailty is typically defined as a biological syndrome characterized by decreased reserve and resistance to stressors, resulting from a decline in the function of physiological systems, which leads to increased vulnerability to external stressors. To address this, experts have developed
numerous simple screening tests. Among them is the screening test for detecting frailty, called the Program of Research to Integrate Services for the Maintenance of Autonomy -
PRISMA 7, designed to identify frail older adults living in the community. Purpose: The aim of this thesis was to determine the reliability and validity of the Slovenian translation of the PRISMA-7 questionnaire for independently living individuals in their home environment in the municipality of Novo Mesto. Methods: We assessed the internal consistency of the questionnaire using Cronbach's alpha coefficient, and its reliability through repeated
measurements using the Intraclass Correlation Coefficient (ICC). The correlation between the PRISMA-7 questionnaire and the frailty phenotype was examined using Spearman's
correlation coefficient. Finally, we evaluated the sensitivity and specificity of the questionnaire with ROC analysis. Results: Sixty older adults (48 women and 12 men)
voluntarily participated in the study. The average age of all participants was over 70 years. Most had completed secondary education, were married, had at least one diagnosis, followed a regular diet, and lived alone or with their families. Using the PRISMA-7 questionnaire, we
identified 49 robust and 11 frail participants, while the frailty phenotype indicated 50 robust and 10 frail participants. Cronbach's alpha coefficient was 0.700. The obtained Intraclass Correlation Coefficient (ICC) (95 % CI) was 0.987 (0.978 - 0.993). The correlation between PRISMA-7 and the frailty phenotype was moderate (ρ = 0.550) and statistically significant (p < 0.0001). In the ROC analysis, the area under the curve (AUC = 0.981) demonstrated excellent accuracy, with an excellent negative predictive value of 100 %, but a critical positive predictive value of 41.7 %. We concluded that the questionnaire is sensitive and specific, as sensitivity at a threshold of 3 or more points reached 100 %, and specificity was 80.9 %. Discussion and conclusion: The PRISMA-7 questionnaire is reliable and valid, with acceptable internal consistency.
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