The validation of the PRISMA-7 questionnaire in community-dwelling elderly people living in Antalya, Turkey

The screening of frailty in older adults is an important issue in the preventive approach in medicine. Frailty is one of the leading causes of morbidity and premature mortality in older adults.

The aim of this study was to validate the PRISMA-7 questionnaire in community-dwelling elderly people living in Antalya, Turkey.

This study was cross-sectional and observational in nature and was conducted in Antalya (Turkey) from February 2016 to April 2017. One hundred fifty patients participated in this study. PRISMA-7 and the CSHA Clinical Frailty Scale were applied to these patients along with a questionnaire on socio-demographics. No translations were available for the PRISMA-7 or the CSHA in Turkish language. The PRISMA-7 and the CSHA Clinical Frailty Scale were translated by two translators to Turkish language; after compilation and agreeing to one Turkish translation, the text was translated back by two translators to English. The translation was then compiled to one text and compared with the original text. After agreement on the translation, both translations were piloted in 10 elderly people. The final form has been applied in this study. Data of the ten piloted patients have not been included into the dataset. Data were analyzed by IBM-SPSS version 22, using descriptive statistics, Pearson product-moment correlation, and receiver operator characteristic (ROC) analysis. The level of significance was set at 0.05.

Our study showed that participants were in average vulnerability to frailty. The test-retest reliability score for the PRISMA-7 Scale and for the CSHA Clinical Frailty Scale were (r= 99.2; p<0.001) and (r=97.5; p<0.05), respectively. After using CSHA Clinical Frailty Scale as a reference standard, PRISMA-7 showed that the area under ROC curve (AUC) was 0.903; which is the best accuracy; and medium level for internal consistency (Cronbach's α =0.714) as a measure for reliability. A cut-off point of 4 or higher for PRISMA-7revealed high sensitivity (81.5%) and specificity (88.2%) for frailty.

We would recommend PRISMA-7 as a reliable and valid instrument, with high-level accuracy in the screening process of frailty.