Histogram
Sleep Heart Health Study (SHHS) Visit Number vs Square root of the mean of the squares of difference between adjacent normal sinus to normal sinus interbeat (NN) intervals
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Visit 1 | 42,920 | 35.3 | ± 28.7 | 27.5 | 4.4 | 306.3 | - | 42,920 |
| Interim Follow-up Visit | - | - | - | - | - | - | - | - |
| Visit 2 | 44,578 | 34.1 | ± 29.6 | 26.0 | 3.1 | 475.1 | - | 44,578 |
| CVD Outcomes | - | - | - | - | - | - | - | - |