Changes

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Long term trends in the efficacy data are important for many reasons. One of the most important is that we all have the occasional bad night where the AHI is much higher than normal or the leaks are awful. Occasional bad nights do not indicate that there's something wrong with the way the PAP therapy is going. (Well, a really awful night for leaks might indicate it's time to replace those nasal pillows or to check whether the mask was put together correctly.) Sleep docs tend to focus almost exclusively on the long term data---a small number of well understood summary numbers and graphs are easier to look at than a massive amount of daily data when you are meeting with large numbers of patients each month.

The Peak AHI graph gives graphical information about the number of apneas and hypopneas recorded in any 60 minute period during the given night's data. The Maximum Peak AHI is the maximum number of events that occurred during any one hour of the given night; this is a crude measure of how bad the worst hour of the night was. The Maximum Peak AHI values are usually going to be quite a bit higher than the overall AHI for the night because for most of use, once we start PAPing we have long period with no events and hopefully many hours where the hourly AHI is at or close to 0.

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= Basic data interpretation: Statistics Data =