Post Reply 
What Does 95% Mean?
Author Message
kgriggs Offline

Members

Posts: 18
Joined: Aug 2014

Machine: PR System One Auto BiPAP
Mask Type: Nasal pillows
Mask Make & Model: TapPap + Ruby Chinstrap
Humidifier: PR System One
CPAP Pressure: 15 - 25
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Crystal Beach, Texas

Post: #1
What Does 95% Mean?
I'm looking at Sleepyhead Statistics.

What does 95% mean, in this context?

Channel .. Min .... Med ... 95% ... Max
... EPAP 15.50 . 16.50 . 21.40 . 22.10
(This post was last modified: 09-21-2014 12:27 PM by kgriggs.)
09-21-2014 12:27 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
surferdude2 Offline

Advisory Members

Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #2
RE: What Does 95% Mean?
It means 95% of the events happened below that number. It also means 5% of the events happened above that number.

In your case, it's referring to the expiratory pressure of your therapy.
(This post was last modified: 09-21-2014 12:34 PM by surferdude2.)
09-21-2014 12:30 PM
Find all posts by this user Post Reply Quote this message in a reply
kgriggs Offline

Members

Posts: 18
Joined: Aug 2014

Machine: PR System One Auto BiPAP
Mask Type: Nasal pillows
Mask Make & Model: TapPap + Ruby Chinstrap
Humidifier: PR System One
CPAP Pressure: 15 - 25
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Crystal Beach, Texas

Post: #3
RE: What Does 95% Mean?
Thanks SD2

So, if I'm wondering whether I need to change change my EPAP, what specific data addresses this question?
09-21-2014 12:36 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
surferdude2 Offline

Advisory Members

Posts: 1,077
Joined: Jul 2014

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro & Optilife
Humidifier: ResMed H5i @ #3 if nose breathing & #5 if mouth breathing
CPAP Pressure: 12 ~ 20 & 11 ~12 if nasal mask
CPAP Software: ResScan SleepyHead

Other Comments: Late stage 2 emphysema

Sex: Male
Location: Mousetown, Southern Illinois

Post: #4
RE: What Does 95% Mean?
That depends on what difficulty/insufficiency you are trying to correct. The 95% figure is often used to determine if the current settings are correct to give you proper therapy most of the time. It doesn't tell the whole story since you are taking it out of context as to all aspects of the therapy and your ability to tolerate it.
(This post was last modified: 09-21-2014 12:49 PM by surferdude2.)
09-21-2014 12:47 PM
Find all posts by this user Post Reply Quote this message in a reply
kgriggs Offline

Members

Posts: 18
Joined: Aug 2014

Machine: PR System One Auto BiPAP
Mask Type: Nasal pillows
Mask Make & Model: TapPap + Ruby Chinstrap
Humidifier: PR System One
CPAP Pressure: 15 - 25
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Crystal Beach, Texas

Post: #5
RE: What Does 95% Mean?
Current EPAP setting has been untouched for 4 days, and AHI is 4.01%

You think I should just leave it alone, or tweak it some more?
09-21-2014 12:58 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,062
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #6
RE: What Does 95% Mean?
If it has only been 4 days, leave it alone. You need to collect more data so you can see more of a trend.

There are a lot of variables that go into the quality of sleep. So just 4 nights is nothing. You want at least 10 days, hopefully more.

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


Breathe deeply and count to zen.

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.
09-21-2014 01:09 PM
Find all posts by this user Post Reply Quote this message in a reply
PaytonA Offline
Wiki Editor
Monitors

Posts: 3,005
Joined: Dec 2013

Machine: ResMed S9 VPAP Auto
Mask Type: Full face mask
Mask Make & Model: Resmed Mirage Quattro
Humidifier: H5i(distilled-top up)
CPAP Pressure: VAuto MinE14.0 MaxI 20.6 PS4.0
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Orange County,California

Post: #7
RE: What Does 95% Mean?
I agree. The median being 16.5 means that half of the night was spent between there and 15.5
09-21-2014 02:47 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
vsheline Offline

Advisory Members

Posts: 1,907
Joined: Jul 2012

Machine: S9 VPAP Adapt (USA Model# 36007, not better 36037 or 36067)
Mask Type: Full face mask
Mask Make & Model: F10 or SimPlus w/ 2Liners. MirageQuatro & Gecko gel pad
Humidifier: H5i
CPAP Pressure: 15 EPAP, PS 5-10
CPAP Software: ResScan

Other Comments: Marfan Syndrome, chronic bradycardia, occasional Cheyne-Stokes Respiration

Sex: Male
Location: California, USA

Post: #8
RE: What Does 95% Mean?
(09-21-2014 12:30 PM)surferdude2 Wrote:  It means 95% of the events happened below that number. It also means 5% of the events happened above that number.

More precisely, a 95% pressure of 21.4 means the pressure was 21.4 or lower during AT LEAST 95% of the time, and that the pressure was 21.4 or higher during AT LEAST 5% of the time.

An extreme example would be for a fixed-pressure CPAP machine, where the Min and Median and 95% and Max pressures could all be the same number.

Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.
(This post was last modified: 09-21-2014 04:06 PM by vsheline.)
09-21-2014 04:00 PM
Find all posts by this user Post Reply Quote this message in a reply
archangle Offline
Wiki Editor
Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #9
RE: What Does 95% Mean?
(09-21-2014 12:30 PM)surferdude2 Wrote:  It means 95% of the events happened below that number. It also means 5% of the events happened above that number.

No, that's wrong.

It means that the pressure was below that pressure for 95% of the time. Events have nothing to do with it.

https://en.wikipedia.org/wiki/Percentile

For instance, if your machine was running for 100 minutes, the pressure was at or below that pressure for 95 of those minutes.

"Med" is median, which is the 50th percentile. It's not the average pressure.
BTW, it's percentile, not "percent", despite the "%" symbol, which matters in some cases.

In this case, assuming 100 minutes of therapy.

Channel .. Min .... Med ... 95% ... Max
... EPAP 15.50 . 16.50 . 21.40 . 22.10

The pressure was always above 15.50 (minimum)
It was at or below 16.50 for 50 minutes (median)
It spent 95 minutes below 21.40 (95th percentile.)
Always below 22.10 (maximum)

In CPAP therapy, the 95th percentile number is often used as sort of a rule of thumb as a "good enough" number. If you wanted to go back to manual pressure, you might set the pressure at the 95 number. If you wanted to reduce the pressure range your auto blows at, you might start a few points below the 95 number.

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
09-21-2014 08:54 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Post Reply 


Forum Jump:

Who's Online (Complete List)