The Serbian version of the Brunnsviken brief quality of life scale: reliability, validity, and psychometric features among the population of high school students

Abstract

Background/Aim. Measuring the quality of life (QoL) is vital in daily clinical practice because it shows significant information in addition to symptoms. There are a large number of scales for assessing the QoL. The Brunnsviken Brief Quality of Life scale (BBQ) measures importance-adjusted satisfaction across six life areas. A validation study of the BBQ scale showed good questionnaire features (high concurrent and convergent validity, internal and test-retest reliability, and sensitivity to change). Therefore, the BBQ scale is excellent for use in psychiatric patients to measure outcomes, as well as for everyday screening. Methods. This prospective cross-sectional study was performed among the final-year students in five high schools in Kragujevac, Serbia. Students completed the BBQ questionnaire. Statistical analysis was performed using a standard statistical method for scale validation and standardization. Results. Our study showed that the BBQ scale had high internal consistency (Cronbach’s alpha = 0.687). That result showed that the scale had good reliability in our study. The average BBQ score was 69.63 ± 16.70 (male: 69.66 ± 18.46; female: 69.83 ± 15.78, p = 0.944). Conclusion. The Serbian version of BBQ satisfies all the criteria of successful validation. Therefore, this scale can be helpful in assessing the QoL in the healthy youth population in Serbia.