sleepstage02 sleepstage04

Histogram

Sleep stage of third 30 second epoch in 5 minute window vs Visit Number
Baseline Follow-up
Total 44,621 39,667
Wake 3,997 2,975
Stage 1 3,565 2,866
Stage 2 16,717 16,010
Stage 3/4 12,737 11,122
Stage 3/4 - 40
REM stage 7,605 6,654