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The duration of polysomnography

Hello, mrueschman, I would like to know whether each subject has been monitored by polysomnography for the whole night only once, at what time and why this time was chosen. I can see which files in the dataset get this information. Thank you.

Thanks for using the site. I see you have access to the Sleep Heart Health Study (SHHS).

You can read about the study protocol in these links:

• https://sleepdata.org/datasets/shhs
• https://clinicaltrials.gov/study/NCT00005275
• https://sleepdata.org/datasets/shhs/files/documentation (Manual of Operations and Protocol)

Subjects were chosen from existing observational studies. There were two main visits/waves in SHHS, so some subjects have two overnight sleep studies collected. The first wave was between 1995-1998 and the second wave between 2001-2003.

Thanks for your reply!