The Pittsburgh Sleep Quality Index (PSQI) is a widely used questionnaire measure that assesses sleep quality in adults. It consists of 19 individual items, which are used to generate seven component scores: subjective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbances, use of sleep medications, and daytime dysfunction. A global score can also be calculated by summing the individual component scores, with a higher score indicating poorer sleep quality.
Harmony is an AI tool which uses Large Language Models to automatically match items from different questionnaires, even across different languages. You can try Harmony here: https://harmonydata.ac.uk/app. Harmony is also available as a Python and R package.
You may also be interested in Harmony Meta, our new discovery engine that helps you search through vast catalogues of study metadata to identify the variables you need for your research.
