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OSCAR [av. leak rate vs. 95% leak rate question]
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OSCAR [av. leak rate vs. 95% leak rate question]
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Sleepwreck
Posts: 33 Threads: 9 Joined: Mar 2020
Machine: Resmed Airsense 10
09-18-2020, 05:57 PM
OSCAR [av. leak rate vs. 95% leak rate question]
Hello,
What is the difference between "Average Leak Rate", "95 % Leak Rate", and " Percentage of time above Leak Rate threshold"? Is the leak rate threshold 25 L/min? Thanks, Rick 
Gideon
Wiki Editor 
Posts: 8,094 Threads: 201 Joined: Dec 2016
Machine: ResMed Aircurve 10 VAuto
09-18-2020, 06:22 PM
RE: OSCAR
Average leak rate is just that, an Average
95% Leakrate is the Leak rated where 95% of all values are at or below that value. It is a specific statistical value. Percentage of time above Leak Rate Threshold is the percentage of time you are having a leak rate that actually impeads the function of your machine. which is just under 25 l/m
Gideon - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter
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Crimson Nape
Posts: 6,918 Threads: 95 Joined: Oct 2014
Machine: AirCurve 10 Vauto
09-18-2020, 06:26 PM
RE: OSCAR
Even though the values are labeled with a percent symbol, they are actually Median, 95 percentile, and the Max as actually 99 percentile. The reason the Max column uses a 99 percentile is to remove artifacts that would skew the real data. The default leak rate is 24.0 L/min. This value can be modified in the preferences.
Crimson Nape
Apnea Board Moderator www.ApneaBoard.com ___________________________________ Useful Links -or- When All Else Fails: OSCAR Chart Organization Attaching Images and Files on Apnea Board Beginner's Guide to Sleepyhead and OSCAR Apnea Helpful Tips INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
sleepwreak
Posts: 6 Threads: 2 Joined: Aug 2015
Machine: ResMed S9
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OSCAR [av. leak rate vs. 95% leak rate question]
