Psychometric Characteristics, Cross-Cultural Adaptation and Validation of the Slovenian Version of the Victorian Institute of Sports Assessments for Gluteal Tendinopathy Questionnaire (VISA-G).

Introduction: Greater trochanteric pain syndrome (GTPS) denotes several disorders around the lateral aspect of the hip. GTPS may develop in native hips as well as after total hip arthroplasty (THA). It is estimated that 5-12% of patients suffer from GTPS after primary THA. Despite the prevalence of GTPS, it is hard to diagnose and manage it properly. The VISA-G questionnaire was developed as a patient-reported outcome measurement tool for evaluation of GTPS. The aims of the present study were to evaluate the reliability of the VISA-G Slovenian and its construct and criterion validity. Methods: After the finalization of the VISA-G Slovenian translation procedure, 59 patients with a painful trochanteric region planned for THA filled in the VISA-G Slovenian at the hospital on two occasions 5-7 days apart. On the first occasion, each patient also filled in the EQ-5D-5L questionnaire and the Harris Hip Score (HHS) was completed by the physiotherapist. Results: The VISA-G Slovenian was found to have a test-retest reliability of ICC 0.977; 95% CI [0.96; 0.986]. Internal consistency was assessed with Cronbach's alpha 0.79. The statistically significant, but low, correlation between the HHS and VISA-G (r=0.48) was obtained. Concurrent validity of the VISA-G with the EQ-5D-5L showed moderate to strong correlations in Mobility, Self-Care, Usual Activities, Pain, EQ-5D-5L Index and EQ VAS, but low correlation in the Anxiety subscale. No floor and ceiling effect were obtained. Conclusions: The VISA-G Slovenian has excellent psychometric properties needed to measure gluteal tendinopathy-related disability of patients in Slovenia. Thus, we recommend using the questionnaire for measuring trochanteric hip pain.

Slovenian version of the scoliosis research society instrument-22 revised (SRS-22r) in adolescents and adults: Psychometric properties and some implications.

PURPOSE: This study aimed to provide a reliable and valid translation of the Scoliosis Research Society-22 (SRS-22r) questionnaire, compare it with the EQ-5D-5 L questionnaire, and analyse health-related quality of life (HRQoL) of patients with idiopathic scoliosis (IS) in Slovenia in order to potentially improve their rehabilitation processes. METHODS: A matched-case-control study was performed to assess internal consistency reliability, test-retest reliability, concurrent validity, and discriminative validity. The questionnaire was returned by 25 adolescent IS patients, 25 adult IS patients, and 25 healthy controls (87%, 71%, and 100% response rate, respectively). RESULTS: Internal consistency was high for all four scales in the adult IS group, but lower among the adolescent patients. Test-retest reliability of the SRS-22r was high to very high in both patient groups. Correlations between SRS-22r and EQ-5D-5 L were low or close to zero among adolescent patients and moderate or high among adult IS patients. SRS-22r domain scores were statistically significantly different between adult patients and healthy controls. CONCLUSION: The study proved that the Slovenian version of SRS-22r has the psychometric properties needed to measure HRQoL, whereby it appears to be more reliable for adults than adolescents. When used with IS adolescents, SRS-22r is affected by a severe ceiling effect. It could be used for longitudinal follow-up of adult patients after rehabilitation treatment. Additionally, some important issues that adolescents and adults with IS are faced with were identified.