Introduction: The present study aimed to examine the psychometric properties of the Brief Pittsburgh Sleep Quality Index (B-PSQI) in a Turkish adult population.
Methods: The sample included 296 adults: 163 healthcare professionals at Silifke State Hospital (Sample 1) and 133 individuals applying for a health committee report (Sample 2).
Results: Confirmatory factor analyses confirmed the unidimensional structure of the B-PSQI in both samples. The B-PSQI scores were highly correlated with the PSQI scores in both samples, with r values of 0.905 and 0.925. The B-PSQI scores also demonstrated strong correlations with the Insomnia Severity Index scores in Sample 1 (r=0.774) and Sample 2 (r=0.762). Furthermore, B-PSQI scores were positively correlated with depressive and anxiety symptoms. The reliability of the scale was acceptable, with Cronbach’s alpha and McDonald’s omega values exceeding 0.70. A score of ≥4 on the B-PSQI provided the optimal balance between sensitivity (85.0% and 95.9%) and specificity (89.3% and 85.7%) for detecting individuals with poor sleep quality.
Conclusion: The current findings suggest that the B-PSQI is a valid and reliable instrument for assessing sleep quality among Turkish adults. Further research in diverse populations is warranted to corroborate these findings.
Keywords: Adult, reliability, sleep quality, Turkish, validity