sleepstage06 sleepstage08

Histogram

Sleep stage of seventh 30 second epoch in 5 minute window vs Visit Number
Baseline Follow-up
Total 44,621 39,667
Wake 4,069 2,980
Stage 1 3,306 2,694
Stage 2 16,836 16,123
Stage 3/4 12,756 11,104
Stage 3/4 - 44
REM stage 7,654 6,722