• Zukhra Siyazbekova, Tolebay Rakhypbekov, Ayan Myssayev, Gulnar Shalgumbayeva, and Luca Giovanni Carlo.
• Bratisl Med J. 2022 Jan 1; 123 (12): 891-896.

ObjectivesThis investigation aimed to estimate reliability of the WHOQOL-BREF questionnaire and quality of life of patients after PCI or CABG surgery.MethodsIn this cross-sectional study, 268 patients after PCI or CABG surgery were studied in East Kazakhstan and Pavlodar regions of Kazakhstan from September to December 2019. The Russian version of the World Health Organization Quality of Life Instrument, Short Form (WHOQOL-BREF) was used to measure their quality of life. Cronbach's alpha coefficient, Pearson's correlation coefficient, paired t-test, independent t-test, and linear regression model were used to analyze the data.ResultsThe mean age of the participants was 60.8 ± 9.2 years, while most of them were male (75.0 %). The overall observed Cronbach's alpha coefficient for the WHOQOL-BREF was 0.842, ranging from 0.668 to 0.764 in its four domains. The total mean score of the respondents on the WHOQOL-BREF was 13.97. The highest and lowest mean scores were observed in the environmental domain (15.22) and the physical health domain (13.00), respectively.ConclusionsThe WHOQOL-BREF questionnaire has a good reliability in characterizing the quality of life of patients after PCI or CABG surgery. Patients after PCI or CABG surgery had a relatively moderate quality of life (Tab. 6, Ref. 23).

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