sleepstage07 sleepstage09

Histogram

Sleep stage of eighth 30 second epoch in 5 minute window vs Visit Number
Baseline Follow-up
Total 44,621 39,667
Wake 4,018 2,948
Stage 1 3,349 2,679
Stage 2 16,820 16,110
Stage 3/4 12,754 11,133
Stage 3/4 - 39
REM stage 7,680 6,758