Histogram
Study scored sleep/wake rather than with full sleep staging if there is not sufficient quality on EEG lead. Studies scored as sleep wake have all sleep stages scored using a default of Stage 2 and no arousals are scored. vs Sleep Heart Health Study (SHHS) Visit Number
| Visit 1 | Interim Follow-up Visit | Visit 2 | CVD Outcomes | |
|---|---|---|---|---|
| Total | 5,804 | - | 4,311 | - |
| sleep/wake only | 162 | - | - | - |
| full scoring | 5,247 | - | - | - |
| unknown | 395 | - | 4,311 | - |