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Hey - thanks for using the site. I found this description of the protocol from the STAGES contributor.
Actigraphy data collection will begin the evening of the PSG, this is critical in order to correlate the rest/activity patterns of the Actigraph device with the findings of the PSG (sleep architecture, potential sleep disorders, etc.).
To your questions: Yes, the first night of actigraphy should correspond to the overnight PSG. You should be able to align the data based on clocktime. You may need to use the STAGES annotation files to identify the sleep period start/end, as opposed to MESA where those data are available in the CSV covariate file.
Thanks for using the site.
ABC (https://sleepdata.org/datasets/abc) PSG data (staging + events) were manually scored by RPSGTs according to AASM guidelines. I agree this information is not apparent anywhere on the site or in the manual, so I made a note to add more information in the future.
Thanks for checking out the site.
The STAGES team provided some results (e.g., AHI, respiratory event durations) in this supplemental datasets: https://sleepdata.org/datasets/stages/files/original/De-identified%20Data/PSG%20SRBD%20Variables
That's probably the closest thing you'll find to "sleep disorders diagnosis from polysomnography".
This file gives some insights into what was collected at each visit, inclduing the Interim Follow-Up: https://sleepdata.org/datasets/shhs/files/documentation?f=SHHS_Documentation_of_Analytic_Database.pdf
The only thing tracked beyond SHHS2 (i.e., 2003+) were CVD outcomes and mortality status.
The 30-second epoch sleep staging is separate from the respiratory event scoring. The ScoredEvent sections of the XML files give timestamps and durations of respiratory events (e.g., apnea, hypopnea).
There are many AHI variables available, e.g., https://sleepdata.org/datasets/shhs/variables?search=ahi
Date of death and other MrOS outcomes data are only available on MrOS Online (https://mrosonline.ucsf.edu/). You may also need to contact the adminsitrators there to obtain an ID linking key between the data repositories.
Thanks for using the site!
SHHS variables can be browsed here: https://sleepdata.org/datasets/shhs/variables
Some medications-related data are available at both the SHHS1 and SHHS2 visits, e.g., https://sleepdata.org/datasets/shhs/variables?folder=Medical+History%2FMedications
You can browse SHHS variables here: https://sleepdata.org/datasets/shhs/variables
Unfortunately, I don't see any results for diet: https://sleepdata.org/datasets/shhs/variables?search=diet
Yes, that sort of information exists in the dataset. You can browse variables here: https://sleepdata.org/datasets/shhs/variables
E.g., for position: https://sleepdata.org/datasets/shhs/variables?search=supine
What "Study" (dataset) are you referring to? Thanks!