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The SHHS polysomnography scoring annotation files are located here: https://sleepdata.org/datasets/shhs/files/polysomnography/annotations-events-profusion
Thanks for checking out the site. I think you are referencing this old forum thread: https://sleepdata.org/forum/o2-desat-events-for-odi-calculation/
ndes*ph/slptime would be the correct way to calculate ODI, however the numerator may inadvertently include desaturations in wake time that shouldn't be included in the calculation. A better way to calculate may be to use the XML annotation files and then identifying SpO2 Desaturations that occurred strictly in sleep epochs.
Thanks for checking out the site. Here is the ANSWERS primary citation: https://pubmed.ncbi.nlm.nih.gov/35389330/
Thanks for using the site.
The NSRR gem download will occur in your current folder. By default the Command Prompt typically opens to a user folder, I think, e.g. c:\Users\ABC123\
Could you try switching to your D: at the Command Prompt? You could do this by typing "D:" at the Command Prompt. The discussion in this article may be helpful: https://stackoverflow.com/questions/17753986/how-to-change-directory-using-windows-command-line
Thanks for your interest in the site!
From https://sleepdata.org/datasets/mesa
Between 2010-2012, 2,237 participants also were enrolled in a Sleep Exam (MESA Sleep) which included full overnight unattended polysomnography, 7-day wrist-worn actigraphy, and a sleep questionnaire. The objectives of the sleep study are to understand how variations in sleep and sleep disorders vary across gender and ethnic groups and relate to measures of subclinical atherosclerosis.
The home sleep recordings included Plethysmography (https://sleepdata.org/datasets/mesa/pages/equipment)
Thanks for checking in. We are not sharing annotations for HeartBEAT at the moment - there's a note in the changelog here: https://sleepdata.org/datasets/heartbeat/pages/polysomnography-introduction.md
The annotations did not include a binary sleep/wake estimate based on available (non-EEG) signals.
As to your first questions, the sleep studies were all home sleep tests (Type III). The sleep studies and blood draws occurred weeks apart at baseline - the sleep study was done after consent to confirm eligibility and then the baseline visit (where the blood draw occurred) was scheduled soon after. At follow-up it's possible the blood draw would occur on the same day as the follow-up sleep study.
Thanks for checking out the site. We (the NSRR team) haven't done much work with the STAGES dataset. MESA and CFS were centrally scored at an academic research center. STAGES, on the other hand, relied upon the clinical sleep scoring groups at each of the sites. Perhaps that explains some of the difference?
References:
You'll have to pull it from the cfs-visit5-dataset CSV in this folder: https://sleepdata.org/datasets/cfs/files/datasets
This is the variable/column you'll want: https://sleepdata.org/datasets/cfs/variables/stloutp
We plan to update our annotation files in the future to include these timing variables. This is a limitation of the Compumedics Profusion XML exports.
Thanks for asking!
Thanks for raising this issue. Please check out the Hypopnea event tags section on this page: https://sleepdata.org/datasets/mros/pages/polysomnography-introduction.md
In short, look for events tagged as "Unsure" in the XML files. These are also hypopneas that can be included in the numerator for AHI metrics. There appear to be 353 Unsure events for aa0181 at Visit 2.
How are you extracting the actigraphy (CSV rows) and PSG (XML SleepStaging) data points you need?
Here's one way to think about the task of pulling the data that overlap. Let's say I found a 10 hour PSG recording that contained 1200 epochs of staging data (30 seconds in length). For that subject I could then lookup the overlap line number from the epoch-by-epoch CSV file and select the next 1200 actigraphy epochs to set beside the PSG epochs. Perhaps you are choosing extra actigraphy epochs somehow? Maybe it also has to do with the slight time differences (e.g., actigraphy line times always end in :00 or :30, whereas PSG would not normally start at those times)?