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SleepyHead Reporting Flaw - All Versions
#1
SleepyHead Reporting Flaw - All Versions
Please take note:
If you use the Normal Average instead of Median for Middle Calculation in File->Preferences->CPAP->Preferred Calculation Methods, The average value at the top of the AHI graph on the Overview screen will be reported incorrectly. It was reporting a value of 4.71 as opposed to .56. Both 0.9.8.1-Testing and 1.0.0-beta-2 have this error.
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#2
RE: SleepyHead Reporting Flaw - All Versions
Verified... All of the 'average' values along the top of the AHI Overview bar chart are incorrect when 'Normal Average' is selected in Preferences.

Bug noted; I will investigate it.
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#3
RE: SleepyHead Reporting Flaw - All Versions
I just looked at mine, and I have a Mac, with Sleepyhead version:  1.0.0-beta-2    and under Preferred Calculation Methods, "Middle Calculation" has "median" checked, so I am assuming my AHI that is showing, is correct.  To be sure, I did the math;

AHI=OI+HI+CAI and it added up to the reported AHI.
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#4
RE: SleepyHead Reporting Flaw - All Versions
Yes, your values will be correct. However, Median is the same as saying "50 Percentile".  To calculate a percentile, you arrange all the values of a given group in order of size.  The value that is listed in the middle of the order is considered Median or the 50 Percentile.  

Example Values: 9, 7, 3, 8, 9, 7, 5  

Values in order 9, 9, 8, 7, 7, 5, 3
Median = 7

Average = 6.857
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
___________________________________
Useful Links -or- When All Else Fails:
The Guide to Understanding OSCAR
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
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.
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