What is the Origin of Pittsburgh Sleep Quality Index?

Developed in 1989 by researchers at the University of Pittsburgh School of Medicine, the PSQI was created to provide a consistent, multi-dimensional measure of sleep quality, which is crucial given the profound impact of sleep on neuroendocrine function and metabolic regulation. Its widespread validation has established it as a gold standard in sleep assessment.

What is the Mechanism of Pittsburgh Sleep Quality Index?

The index evaluates seven distinct components of sleep: subjective quality, sleep latency (time to fall asleep), sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction. Scores from these components are aggregated to yield a single global score, where a higher score indicates poorer sleep quality, offering a quantifiable metric for clinical decision-making.

Pittsburgh Sleep Quality Index ∞ Area

Pittsburgh Sleep Quality Index

Meaning

The Pittsburgh Sleep Quality Index (PSQI) is a standardized, self-rated psychometric instrument used extensively in clinical practice and research to assess the quality and patterns of sleep over the preceding month. This index provides a global score that objectively quantifies the subjective experience of sleep, serving as a reliable tool for screening for sleep disturbances and monitoring the efficacy of sleep interventions in the context of hormonal and overall health.

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