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chinqual
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of time the signals were useable. Useable data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.
eeg1qual
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of time the signals were useable. Useable data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.
eeg2qual
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of time the signals were useable. Useable data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.
eoglqual
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of time the signals were useable. Useable data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.
eogrqual
under
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1
in
SHHS variables
Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of time the signals were useable. Useable data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.