Development, validity and reliability of patient perception of scoliosis-specific physiotherapy (physio-is) questionnaire.

Purpose: To develop a questionnaire for adolescent idiopathic scoliosis (AIS) patients undergoing physiotherapeutic scoliosis-specific exercises (PSSE) and to evaluate its content validity, structural validity, and reliability.

Methodology: Seven PSSE treatment experts checked the content validity of the Patient's Perception of Scoliosis-Specific Physiotherapy Questionnaire (Physio-IS). For each Physio-IS item, the content validity indexes must be ≥ 90%.