Background & Aim: The Roy’s adaptation model is a helpful instrument to be used in treatment processes of patient s with chronic diseases. According to chronic nature of amputee veterans' diseases, it is expected that the implementation of care plan s based on this model can increase adaptation in the patients . The present study was performed to design and determine validity and reliability of a researcher-designed adaptation questionnaire based on the Roy’s adaptation model on war veterans with lower limb amputation .

  Methods & Materials: This study was conducted among war veterans referred to the veteran clinic of Orthotics and Prosthetics center using convenience sampling method during 2012-2014 . M ain concepts of adaptation defined based on the Roy’s adaptation model were used to provide items. The validity and reliability of the questionnaire was assessed using the content validity index (CVI), content validity ratio (CVR), face validity, internal consistency (Cronbach's alpha), and stability (test-retest reliability) tests.

  Results: Thirty five items were developed including 15 items on physiological area, 11 items on self-concept area, four items on dependence/ independence area, and five items on role playing area. The CVI was 0.95 . The Cronbach's alpha was 0.78. The correlation coefficient values ​​were more than 0.7 in each area .

  Conclusion: The psychometric analysis of the questionnaire showed proper validity and reliability for measuring adaptation on war veterans with lower limb amputation. The questionnaire is recommended to be used in nursing practice .