HI, i am on sleep study with CFS & MESA data
on the study i has found critical issue can affect other future works
this issue should be identified promptly.
you know, total sleep time (TST) is can be calculated from sleep stage like equation 1 and the sleep stage can be extracted from annotation xml file
equation1) TST = in bed time - (wake after sleep onset + sleep latency)
Common sense, a TST from the sleep stage and TST from variable csv file are must be same, however several subject are difference
To check the exact value of errors, i ploted figures can express the two values.
i has attached the plots and writed down details, i hope you to deal with this issue promptly
plot figures link
https://drive.google.com/open?id=1XQcjGReenZwWpAcf-xMacDm-QSRZDGtv
MESA (1899 subjects), unit: min
(subject number, from variable TST, from sleep stage TST)
(1738, 226, 256)
(2852 , 393, 502.5)
(6476 , 403, 411)
CFS (694 subjects), unit: min
(subject number, from variable TST, from sleep stage TST)
(800937, 19, 28)
(800170, 248, 265)
(801121, 269, 276.5)
(802726, 276, 283.5)
(802368, 326, 340)
(802678, 335, 362.5)
(802001, 359, 363.5)
(801376, 380, 383.5)
(800402, 379, 432.5)
many thanks,