Greek Adaptation and Validation of the Bad Sobernheim Stress Questionnaire-Brace and the Bad Sobernheim Stress Questionnaire-Deformity.

Adolescent idiopathic scoliosis (AIS) is a progressive condition responsible for spinal deformity in all three planes. Spinal deformity and how the rib hump affects the aesthetics, and the functionality of the trunk can be a cause of psychological distress as well. Bracing as a treatment can have a negative impact on QoL, cause pain, affect participation levels in physical activities, and cause isolation and depression. Brace-induced stress may affect the patient's compliance with the treatment which may lead to scoliosis progression. The purpose of this study was to adapt and validate in the Greek language two instruments that can evaluate stress levels induced by bracing treatment and by deformity. The process of cross-cultural adaptation and validation of the Bad Sobernheim Stress Questionnaire-Brace (ΒSSQ-Brace) and the Bad Sobernheim Stress Questionnaire-Deformity (BSSQ-Deformity) followed the International Quality of Life Assessment Project (IQOLA) guidelines. Forty-seven AIS patients with a mean age of 14.4 ± 1.51 years, mean Cobb angle of 30.08 ± 9.25, and mean duration of the bracing treatment at 20.5 ± 12.2 months participated. The mean score for GR-BSSQ Brace was 14.04 ± 6.42, which is interpreted as medium stress, whereas the mean score for GR-BSSQ Deformity was 20.34 ± 3.78, which is interpreted as low stress. GR-BSSQ Brace demonstrated good internal consistency with Cronbach's α = 0.87. GR-BSSQ Deformity demonstrated acceptable internal consistency with Cronbach's α = 0.73. Both GR-BSSQ Brace and GR-BSSQ Deformity exhibited excellent test-retest reliability with ICC values of 0.94 (95% CI 0.89-0.97) and 0.92 (95% CI 0.86-0.95), respectively. BSSQ Brace and BSSQ Deformity questionnaires have been cross-culturally adapted into the Greek language and have been proven to be valid and reliable instruments measuring brace and deformity-induced stress. Both questionnaires can be used for clinical and research purposes in Greek-speaking population.