CPAPtalk.com

djams wrote: ↑

Mon Apr 29, 2019 5:21 pm

I've got a moment to report the issues I'm seeing. I'll put each in a separate post.

This I'm sure many have noticed. The highlighted Daily Statistics are incorrect every day.

EDIT: to add that this is the same in SleepyHead 1.1.0

DailyStatsIncorrect.PNG

djams wrote: ↑

Mon Apr 29, 2019 5:32 pm

In Overview tab, Flow Limitations graph is incorrect (probably due to daily stats being incorrect?). This also showed up in SleepyHead 1.1.0. I'm including graphs from all 3 versions that I have installed. SH1.0.0 seems to be correct, included SH 1.1.1 because I like the way the 95% is shaded and easy to see.


SH 1.0.0
SH1_0_0.PNG

SH 1.1.1
SH1_1_0.PNG

OSCAR
OSCAR.PNG

Dog Slobber wrote: ↑

Mon Apr 29, 2019 6:56 pm

SleepyHead v1.0.0 and earlier defined and reported many of the "Max" values as the highest value that occurred in the session. This is configurable in Preferences / CPAP / Maximum Calcs.

SleepyHead v1.1.0 (and propagated into OSCAR) defined and reported many of the "Max" values as the 99% percentile. This was a design decision to eliminate some of the high end outliers.This is a config item in Preferences / CPAP / Maximum Calcs, but disabled.

djams wrote: ↑

Tue Apr 30, 2019 4:43 am

Dog Slobber wrote: ↑

Mon Apr 29, 2019 6:56 pm

SleepyHead v1.0.0 and earlier defined and reported many of the "Max" values as the highest value that occurred in the session. This is configurable in Preferences / CPAP / Maximum Calcs.

SleepyHead v1.1.0 (and propagated into OSCAR) defined and reported many of the "Max" values as the 99% percentile. This was a design decision to eliminate some of the high end outliers.This is a config item in Preferences / CPAP / Maximum Calcs, but disabled.

Yes, that was done. But my question remains "why?". And why only for ResMed machines? Why can't I change it? IMO, the daily stats should reflect what the machine reports.

The FL max and snoring max are not 99% numbers. The max snore is 0.00 every day, no matter how much snoring I have - might be reporting the 1% number. And the max FL is grossly under-reported.

Here's another example. I've turned on the "peak" dotted lines in the pressure, flow limit, leak and snore graphs. Pressure maximum looks like 99%. Flow limit clearly is not. And the peak line for snore isn't visible because it's riding the zero line. I don't think leak is correct either. If you look closely, there's a pretty significant short leak at the start of the session.

Edit to add full screenshot, so the daily numbers can be seen
WithPeakLines.PNG

Sleeprider wrote:RE: OSCAR - max flow limit problem?

When Mark and I worked on 1.1.0, it was my opinion that the "maximum" was worthless, and suggested we report the 99 percentile instead. The maximum is too subject to a leak or anomaly that makes it a simple flag for an outlier. It has no meaning in therapy. I think this was an undocumented experiment that is actually an improvement in the data, but since it was not properly labeled or documented, it is hard to reconcile. Anyone that follows my posts will notice I never pay any regard to the maximum, and i think Mark took that to heart.

jaswilliams wrote:I would also note it seems only to be applicable to some machines so we may need to research this further.

Sleeprider wrote:This may be one reason Mark didn't consider 1.1.0 complete. He abandoned it to work on 2.0, so there may be other Easter eggs. It's important that OSCAR be accurate and properly documented, but I still say the "maximum" statistic is not a particularly valuable metric.

bonjour wrote: ↑

Tue Apr 30, 2019 8:30 am

What I'll add is that we are at our starting point. It is now a team of people making decisions on OSCAR's future direction. First and foremost, it MUST be Accurate.
Other than the known inherited issues we are aware of we are taking concepts for some of the best advisors in the community. Even those that are not on the development team. This thread IS one of those inputs.
A lot of the graphs have issues with scale and overlay lines. Those will be fixed, and this is one of them.

Gulfstream wrote: ↑

Mon Apr 29, 2019 6:49 pm

Hello Friends, I've been looking here and over on Apnea Board and I am unable to find a post that answers my specific question. I have the Philips Respironics Dreamstation Auto SV BiPap and I would like to use OSCAR to observe my data. I have downloaded and installed OSCAR on my Windows 10 machine. The program downloaded and installed without issue. When I imported my info from my SD card there was almost nothing in the way of imported data. Of the many graphs displayed on the overview and the daily views there were only 3 or 4 with any data. There was no AHI data, pressure, leak rate, snore, etc. Over on Apnea Board I read the Wiki on OSCAR and it indicated that the Dreamstation machines are supported but I, for some reason, am not able to get OSCAR to cooperate. Any help would be well appreciated.

BlueDragon wrote: ↑

Tue Apr 30, 2019 2:37 pm

Gulfstream wrote: ↑

Mon Apr 29, 2019 6:49 pm

Hello Friends, I've been looking here and over on Apnea Board and I am unable to find a post that answers my specific question. I have the Philips Respironics Dreamstation Auto SV BiPap and I would like to use OSCAR to observe my data. I have downloaded and installed OSCAR on my Windows 10 machine. The program downloaded and installed without issue. When I imported my info from my SD card there was almost nothing in the way of imported data. Of the many graphs displayed on the overview and the daily views there were only 3 or 4 with any data. There was no AHI data, pressure, leak rate, snore, etc. Over on Apnea Board I read the Wiki on OSCAR and it indicated that the Dreamstation machines are supported but I, for some reason, am not able to get OSCAR to cooperate. Any help would be well appreciated.

I suggest trying to import your detailed data from backups of the SD card that SleepyHead created when you originally imported the data into SleepyHead.

In OSCAR, create a new profile. Select File/Import from SD card, then click on Choose a Folder. Navigate to the backup directory for your Sleepyhead profile: SleepyHeadData\profiles\yourname\yourmachine\BACKUP and import data from there. You can find a more complete description of this process at http://www.apneaboard.com/wiki/index.ph ... yHead_data.