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 of the quality of life (QoL) is very important in a daily clinical practice, because it shows significant informations as addition to symptoms. There are a large number of scales for assessment the QoL. The Brunnsviken Brief Quality of life scale (BBQ) measures importance-adjusted satisfaction across six life areas. Validation study of the BBQ scale was show a 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 the psychiatric patients for the measuring outcomes, as well as an everyday screening. Methods: This prospective cross-sectional study was performed among the final-year students in five high schools in Kragujevac, Serbia. Students completed a BBQ questionnaire. Statistical analysis was performed using a standard statistical method for scale validation and standardization. Results: Our study was shown that the BBQ scale have high internal consistency (Cronbach?s alpha = 0.687). This result shows good reliability of the scale in our study. Average of BBQ score was 69.63 ? 16.70 (male: 69.66 ? 18.46; female: 69.83 ? 15.78, p=0.944). Conclusions: The Serbian version of BBQ satisfies all the criteria of successful validation. Therefore, this scale will be helpful for assessment of QoL in health Serbian young population.

Exploring cutoff points and measurement invariance of the Brunnsviken brief quality of life inventory

“…The BBQ is a brief, freely available measure of subjective QoL. The current study corroborates previous findings that have shown the BBQ to be a reliable and valid measure of QoL ( Lindner et al, 2016 ; Biliunaite et al, 2021 ; Pantić et al, 2023 ). Our aim was to assess whether the factor structure of the BBQ remained stable across different age groups, genders, depressive symptom severity, and anxiety symptom severity (i.e., assess measurement invariance [MI]), and to identify potential cutoff points for the BBQ.…”

“…Thus, the inclusion of importance items and the subsequent usage of weighted satisfaction ratings in the BBQ ought to be construed as a further strength of the validity of the BBQ as a marker of QoL. Previous studies have shown the BBQ to be a unifactorial measure of QoL, with good concurrent and convergent validity, high internal and test–retest reliability, and accurate classification ability in both research and clinical settings ( Lindner et al, 2016 ; Biliunaite et al, 2021 ; Pantić et al, 2023 ). In this study, the BBQ demonstrated high internal reliability during screening, Cronbach’s alpha = 0.74 [95% CI: 0.73, 0.75], indicating the BBQ to be a homogeneous scale with good internal consistency.…”

“…The Brunnsviken Brief Quality of life scale (BBQ; Lindner et al, 2016 ), which was specifically designed to address these limitations, is a brief and easily accessible self-report questionnaire, covering life domains empirically shown to be linked to subjective life satisfaction. Previous studies have shown the BBQ to be a valid QoL measurement ( Lindner et al, 2016 ; Biliunaite et al, 2021 ; Pantić et al, 2023 ). However, the operational characteristics of the BBQ across age groups, genders, and psychopathology (e.g., clinically depressed or sub-clinically depressed) has yet to be investigated.…”