Validity, reliability and responsiveness of the cognitive exercise therapy approach questionnairre in patients with a diagnosis of systemic lupus erythematosus

This study was planned to examine the validity, reliability and responsiveness of the Cognitive Exercise Therapy Approach (Bilişsel Egzersiz Terapi Yaklaşımı-BETY) Questionnairre in patients with Systemic Lupus Erythematosus (SLE). 150 individuals diagnosed with SLE participated in the study. The Lupus Quality of Life Scale ( LupusQoL), Health Assessment Questionnaire (HAQ), Hospital Anxiety and Depression Scale (HADS) and Short Form-36 (SF-36) were used to validate the BETY Questionnairre. The Spearman's correlation between the BETY Scale and the other scales was found to be between r= -0,522 and 0,735 (p<0.001). The test-retest method and the intraclass reliability (ICC) coefficient were used for reliability. The correlation between the responses of 30 patients to the BETY scale for 1 week (r=0.989, p<0.001) and ICC (0.985, p<0.001) were quite high. The Cronbach's Alpha coefficient (0.952) was checked for internal consistency which was found to be excellent. In order to evaluate the responsiveness of the scale, time-dependent correlation of the BETY Questionnairre with all scales was examined in 30 patients with SLE after 3 months. LupusQoL, which is a SLE-specific quality of life scale, was moderate correlated with the parameters of planning (rho=-0,529 p=0,003), intimate relationship (rho=-0,421 p=0,02), body image (r=-0,443 p=0,014); while other parameters were low correlated. Similar to other scales, moderate or weak correlation was found. As a result of our study, it was concluded that the BETY Questionnairre is a valid, reliable and responsiveness assessment tool in individuals with SLE. The BETY Scale can be preferred as a tool for evaluation and follow-up treatment in individuals with SLE.