Upper ' and lower ' groups statistics.

The Validated Hemophilia Regimen Treatment Adherence Scale—Prophylaxis (VERITAS-Pro) assesses adherence to prophylaxis treatment recommendations in hemophilia patients. This study aimed to adapt the VERITAS-Pro into Turkish and evaluate its reliability and validity. The research design used is a psychometric study. A convenience sample of 102 patients with hemophilia A or B was followed by the Aegean Adult Hemophilia and Thrombosis Center. The VERITAS-Pro was adapted to Turkish in six steps, including forward- and back-translation, committee review, and reliability and validity analysis. Based on the confirmatory factor analysis, modification indices suggested discrepancies amongst items, which were improved upon the removal of items 11 and 15. Findings from this alternative model are: χ2/df = 1.34; RMSEA = 0.05; SRMR = 0.09; and IFI = 0.92. The alternative model showed high adherence rates. Cronbach’s alpha value for the Turkish version was found to be 0.83. The test-retest reliability of the Turkish scale ranged from 0.31 to 0.78. All items discriminated significantly between participants who were more adherent and those who were less adherent (t = 23.53; p<0.01). 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. According to the validity and reliability evidence obtained, the psychometric properties of the Turkish version of the VERITAS-Pro are suitable.验证性血友病方案治疗依从性量表——预防用药版（Validated Hemophilia Regimen Treatment Adherence Scale—Prophylaxis, VERITAS-Pro）用于评估血友病患者对预防用药治疗建议的依从性。本研究旨在将VERITAS-Pro改编为土耳其语版本，并对其信效度进行评价。本研究采用心理测量学研究设计。爱琴海成人血友病与血栓中心招募了102名A型或B型血友病患者作为便利抽样样本，并对其进行随访。VERITAS-Pro的土耳其语改编流程共包含六个步骤，分别为正向翻译、回译、委员会评审以及信效度分析。基于验证性因子分析结果，修正指数提示各条目间存在适配偏差，移除条目11与条目15后，该问题得到有效改善。调整后模型的拟合指标如下：χ²/df = 1.34；近似误差均方根（Root Mean Square Error of Approximation, RMSEA）= 0.05；标准化残差均方根（Standardized Root Mean Square Residual, SRMR）= 0.09；增量拟合指数（Incremental Fit Index, IFI）= 0.92。该调整模型展现出良好的拟合效果。土耳其语版VERITAS-Pro的克朗巴哈α系数（Cronbach’s alpha）为0.83。该量表的重测信度区间为0.31~0.78。所有条目均能显著区分依从性较高与较低的受试者（t = 23.53; p<0.01）。将VERITAS-Pro翻译为当地语言，可更精准地测量血友病患者的治疗依从性，同时便于开展跨文化比较研究。结合本次获取的信效度证据，土耳其语版VERITAS-Pro的心理测量学性能符合应用要求。