Histogram

Visit Number vs REM power density at 8.5 Hertz
N Mean StdDev Median Min Max Unknown Total
Baseline 3,209 12.7 ± 58.3 5.3 0.2 937.7 - 3,209
Follow-up 2,909 12.5 ± 59.5 5.2 0.0 904.9 - 2,909