It looks like Sleepyhead does not include the days not used in there calculations and ResScan does.
Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.
Comparing ResScan to Sleepyhead over a long period

11222017, 10:21 AM
Comparing ResScan to Sleepyhead over a long period
I haven't compared the two software's in a long time and I just want to understand the differences.
It looks like Sleepyhead does not include the days not used in there calculations and ResScan does.
11222017, 11:24 AM
RE: Comparing ResScan to Sleepyhead over a long period
You haven't shown us the number of events recorded by ResScan, so I can't determine how ResScan calculated the AHI, so I can't say if ResScan actually used the unused days in calculating the average AHI.
They shouldn't, because the number of events on those days is unknown, as are the number of hours of sleep. Thus we have an unknown number of events, and adding that unknown event count into all the known event counts gives an unknown total to be divided by an unknown total hours. The same is true for the SleepyHead data, although I have my own data, and the code, so I can (eventually) figure out how SleepyHead makes it's calculations (which may be incorrect). For example, on the Overview page, it appears that the 'Normal Average' of the AHIs is calculated by adding up the daily AHIs and dividing by the number of days  but it is not clear to me that the average of a set of averages is really the sum of the set divided by the count of the set. That's a question for another day with fewer other tasks to work on.
11222017, 12:16 PM
RE: Comparing ResScan to Sleepyhead over a long period
(11222017, 11:24 AM)pholynyk Wrote: You haven't shown us the number of events recorded by ResScan, so I can't determine how ResScan calculated the AHI, so I can't say if ResScan actually used the unused days in calculating the average AHI.As far as I can tell I can't find the total number of apneas over a given date range in either ResScan or Sleepyhead. Do you know of a way?
11222017, 12:28 PM
(This post was last modified: 11222017, 12:33 PM by pholynyk.
Edit Reason: checked the csv files
)
RE: Comparing ResScan to Sleepyhead over a long period
Not offhand, although it might be in the exported csv  I'll have to check. Of course it shows up for each day on the Events tab of the daily page. One could take a short range  like a week  and add things manually and then compare with the Overview or Statistics figures.
ETA  the various event type counts do show up in the csv files, both the session and summary files. 
« Next Oldest  Next Newest »

Possibly Related Threads...  
Thread  Author  Replies  Views  Last Post  
RESSCAN 5.9 Detailed Graphs  wts33168  2  73 
08012021, 12:51 PM Last Post: wts33168 

RESSCAN  PURE VIRTUAL FUNCTION CALL [see post #2 for interim solution]  srlevine1  4  99 
07292021, 09:59 AM Last Post: srlevine1 

ResScan 5.9 and SD card  nicko68  11  523 
07282021, 06:20 AM Last Post: mykel36 

User name and password for ResScan? Please  iostfeld  7  5,153 
05242021, 04:22 PM Last Post: jaswilliams 

ResScan 5.5 Urgent report problem  Fran  7  235 
05092021, 08:11 PM Last Post: pholynyk 

ResScan 5.9 and Mac Install Problem  Amishboy51  3  355 
03212021, 02:34 PM Last Post: Holgern 

ResScan 5.9  N6JSX  2  466 
02202021, 05:30 PM Last Post: SuperSleeper 