Total sleep time (min) | Amount of time asleep |
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Sleep Onset Latency (min) | Length of time from lights out to first episode of stage 2 sleep |
Wake After Sleep Onset (min) | Number of minutes of recorded wake following first episode of stage 2 sleep |
Number of awakenings (over TSP) | Number of wake bouts following first episode of stage 2 sleep |
Number of arousals | Number of arousals over the entire sleep period |
REM Latency | Length of time to first REM stage |
AHI Index | Number of apnoea or hypopnia events per hour of sleep |
Percentage of N1 (of TST) | Percentage of recorded stage 1 sleep over the total time asleep |
Percentage of N2 (of TST) | Percentage of recorded stage 2 sleep over the total time asleep |
Percentage of N3 (of TST) | Percentage of recorded slow wave sleep over the total time asleep |
Percentage of REM (of TST) | Percentage of recorded REM sleep over the total time asleep |
Percentage of WAKE (of TSP) | Percentage of recorded wake over the total sleep period (ie, how long they were awake following first episode of stage 2 sleep) |
REM, rapid eye movement; TSP, total sleep period; TST, total sleep time.