Name
eeg1qual
Label
Quality of the EEG1 signal
Description
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.
Domain
sigqual
- 1: Less than 2 hours of artifact-free signal
- 2: At least 2 hours but less than 4 hours of artifact-free signal
- 3: At least 4 hours but less than 6 hours of artifact-free signal
- 4: At least 6 hours of artifact-free signal
Type
choices