The most debilitating complication of hemophilia is the development of a painful hemophilic arthropathy resulting from recurrent musculoskeletal bleeding events, which are often preventable with regular treatment. It is marked by a tendency to bleed into joints, muscles, and mucosal membranes. Hemophilia is a lifelong bleeding disorder caused by a deficiency in a coagulation factor, specifically factor VIII (FVIII) or factor IX (FIX). According to the validity and reliability evidence obtained, the psychometric properties of the Turkish version of the VERITAS-Pro are suitable. Translation of the VERITAS-Pro into local languages enables more accurate measurement of treatment adherence among people with hemophilia and facilitates cross-cultural comparison studies. All items discriminated significantly between participants who were more adherent and those who were less adherent (t = 23.53 p<0.01). The test-retest reliability of the Turkish scale ranged from 0.31 to 0.78. Cronbach’s alpha value for the Turkish version was found to be 0.83.
The alternative model showed high adherence rates. Findings from this alternative model are: χ 2/df = 1.34 RMSEA = 0.05 SRMR = 0.09 and IFI = 0.92. Based on the confirmatory factor analysis, modification indices suggested discrepancies amongst items, which were improved upon the removal of items 11 and 15. The VERITAS-Pro was adapted to Turkish in six steps, including forward- and back-translation, committee review, and reliability and validity analysis. A convenience sample of 102 patients with hemophilia A or B was followed by the Aegean Adult Hemophilia and Thrombosis Center. The research design used is a psychometric study. This study aimed to adapt the VERITAS-Pro into Turkish and evaluate its reliability and validity. The Validated Hemophilia Regimen Treatment Adherence Scale-Prophylaxis (VERITAS-Pro) assesses adherence to prophylaxis treatment recommendations in hemophilia patients.
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