Validity, Reliability, and Cross-cultural Adaptation of the Persian (Farsi) Version of Profile Fitness Mapping Back Questionnaire

Validity, Reliability, and Cross-cultural Adaptation of the Persian (Farsi) Version of Profile Fitness Mapping Back Questionnaire Purpose: Many available questionnaires fail to distinguish between the severity of symptoms and functional limitations caused by low back pain (LBP) in different areas.Therefore, it is difficult to determine which symptoms and functional limitations are associated with existing low back pain.The lack of a specific questionnaire for functional symptoms and constraints related to back pain in the Persian language in Iran has made it necessary to develop new and reliable tools in this field.Therefore, this research aims to localize and validate the Persian version of this questionnaire. Methods:The questionnaire was finalized after necessary corrections using the translation-retranslation method.Two methods, content validity index (CVI) and content validity ratio (CVR), were used to ensure content validity.The internal consistency test (Cronbach's ) reliability and test re-test reliability were evaluated. Results:The CVI results indicated that all questions scored above 0.79 in communication, clarity, simplicity, and ambiguity.The questionnaire demonstrated a high level of content validity with an average CVI (S-CUI/Ave) of 0.93.Statistical analysis revealed high internal consistency for the symptoms (26 questions, Cronbach's =0.91) and functional limitations (29 questions, Cronbach's =0.95) section of the questionnaire. Conclusion:After conducting the questionnaire, it is possible to identify people with varying levels of pain and functional limitations associated with chronic low back pain.It can help determine the progression of symptoms and limitations.