I research for sleep-apnea using ECG signal.
So I write permitions about using open dataset on NSRR.
Therefore, I downloaded SHHS on my research.
I don`t understand on "shhs-data-dictionary-0.18.0-variables.csv" file information.
Apnea Hypopnea Index (AHI) has 4-stages below:
-None/Minimal: AHI < 5 per hour / -Mild: AHI ≥ 5, but < 15 per hour/ -Moderate: AHI ≥ 15, but < 30 per hour/ -Severe: AHI ≥ 30 per hour
And I know how to calculate AHI values.
above are 4-stages different stages from csv files "Central Apnea-Hypopnea Index" and "Obstructive Apnea-Hypopnea Index" ?
is it different, I can select one of 4 condition by the AHI-condition on my research?
"ahiov50" values in "shhs-data-dictionary-0.18.0-variables.csv" files separate from 3 values: 0, 1, and 8
which different 0 and 8. 0 means No, and 8 means Not-applicable. I so understand that No and Not-applicable have equal meaning. is it right?
Also I really appreciated on NSRR answers. I tried to study on SHHS dataset by using all material stuff related to SHHS files.
I have two question about downloading data.
if I type "nsrr download shhs/polysomnography/edfs/shh2", I would find the program which is stopped on "shhs2-205205.edf"
Could I re-download to starting at "shhs2-205205.edf"?
So I find nsrr download shhs/polysomnography/edfs/shhs2 --fast
is it right command?
Thanks for answers about my questions.
I really appreciated it.
I really thanks for my first question about SHHS download problem.
And I have another question for ECG signal.
In "08-equipment-shhs1.md" , it said that "ECG Placement: Medtronic Medclear ECG snap electrodes. 2 leads place R subclavicle-L lower rib. Occasional modesty issues necessitated altering placement to right subclavicle-left suubclavicle. Position 3-5 cm below the middle of the right and left collar bones, in spaces between rib bones." I was not major in related to ECG parts. So I didn`t understand about "Occasional modesty issues necessitated altering placement to right subclavicle-left suubclavicle". It means that normally it goes modified lead II ECG signal on SHHS1, but occasional modesty issues happens, it goes on lead I ECG signal?
I red someone question for ECG signal about SHHS1, SHHS2, and MrOs. answer is that ECG L and R are separated. However, I dont know ECG L and R exact meaning. would you tell more explanation about ECG L and R? I tried these information on internet, but I didnt find any proper information.
t know ECG L and R exact meaning. would you tell more explanation about ECG L and R? I tried these information on internet, but I didn
Final question looks like worthless something. In SHHS, documents said that 12-lead ECG signal. Other Dataset said same letters, because of using PSGs. So, probably I would only use lead 2 ECG signal in my research, would I get information for which Open dataset hold lead II ECG signal in NSRR documents.
Thanks for your comment for my questions.
Okay, I will post a screenshot about problems.
Thank you for reply comments.
I try not your answer but I operate command " -nsrr download shhs/polusomnography/edfs --fresh".
it is same download process above your recommend answer about " nsrr download shhs?
Hello I know about restarting SHHS dataset.
I downloaded it from last Thursday(7 April), however, it stopped "shhs\polysomnography\edfs\shhs1" "shhs1-202268.edf" file.
So I want to find "https://github.com/nsrr/nsrr-gem"
irb(main):016:0> d.download("edfs/shhs1", method: "fast", depth: "recursive")
File Check: fast
File Regex: nil
Get your token here: https://sleepdata.org/token
Your input is hidden while entering token.
Enter your token: AUTHORIZED as
Finished in 1.8321012 seconds.
0 folders created, 0 files downloaded, 0 MiBs downloaded, 0 files skipped, 0 files failed
NSRR version is 8.0.0
Ruby version is latest version