Name
timest2
Label
Total duration of stage 2 sleep from type II polysomnography
Description
Total time scored as stage 2 rounded to nearest minute
Calculation
timest2 = minstg2p
Units
minutes
Type
numeric
Tags
Sleep Heart Health Study (SHHS) Visit Number vs Total duration of stage 2 sleep from type II polysomnography
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Visit 1 | 5,642 | 203.6 | ± 53.9 | 204.5 | 20.0 | 399.0 | 162 | 5,804 |
| Interim Follow-up Visit | - | - | - | - | - | - | - | - |
| Visit 2 | 2,620 | 215.2 | ± 54.8 | 215.0 | 28.0 | 470.0 | 1,460 | 4,080 |
| CVD Outcomes | - | - | - | - | - | - | - | - |
Age at Sleep Heart Health Study Visit One (SHHS1) vs Total duration of stage 2 sleep from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 5,642 | 203.6 | ± 53.9 | 204.5 | 20.0 | 399.0 | 162 | 5,804 |
| 35-44 years | 336 | 211.9 | ± 51.6 | 215.0 | 61.0 | 355.5 | 6 | 342 |
| 45-54 years | 999 | 209.1 | ± 50.9 | 210.0 | 28.5 | 399.0 | 18 | 1,017 |
| 55-64 years | 1,734 | 203.7 | ± 51.5 | 205.0 | 58.5 | 379.5 | 35 | 1,769 |
| 65-74 years | 1,572 | 201.0 | ± 54.7 | 202.0 | 24.5 | 369.5 | 45 | 1,617 |
| 75-84 years | 907 | 198.7 | ± 58.7 | 198.0 | 20.0 | 398.0 | 48 | 955 |
| 85 years or older | 94 | 202.2 | ± 67.2 | 198.5 | 40.5 | 365.5 | 10 | 104 |
Gender of the participant vs Total duration of stage 2 sleep from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 5,642 | 203.6 | ± 53.9 | 204.5 | 20.0 | 399.0 | 162 | 5,804 |
| Male | 2,691 | 212.5 | ± 51.8 | 213.0 | 28.0 | 399.0 | 74 | 2,765 |
| Female | 2,951 | 195.4 | ± 54.6 | 197.0 | 20.0 | 381.0 | 88 | 3,039 |
Gender of the participant vs Total duration of stage 2 sleep from type II polysomnography
Visit 2
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 2,620 | 215.2 | ± 54.8 | 215.0 | 28.0 | 470.0 | 1,460 | 4,080 |
| Male | 1,204 | 223.0 | ± 52.0 | 222.0 | 54.0 | 399.0 | 657 | 1,861 |
| Female | 1,416 | 208.6 | ± 56.2 | 209.0 | 28.0 | 470.0 | 803 | 2,219 |
Race of the participant vs Total duration of stage 2 sleep from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 5,642 | 203.6 | ± 53.9 | 204.5 | 20.0 | 399.0 | 162 | 5,804 |
| White | 4,785 | 203.0 | ± 53.6 | 204.5 | 20.0 | 399.0 | 122 | 4,907 |
| Black | 477 | 204.9 | ± 56.7 | 201.5 | 28.0 | 398.0 | 38 | 515 |
| Other | 380 | 208.8 | ± 54.1 | 207.3 | 80.0 | 372.0 | 2 | 382 |
Race of the participant vs Total duration of stage 2 sleep from type II polysomnography
Visit 2
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 2,620 | 215.2 | ± 54.8 | 215.0 | 28.0 | 470.0 | 1,460 | 4,080 |
| White | 2,286 | 214.2 | ± 54.2 | 215.0 | 28.0 | 399.0 | 1,301 | 3,587 |
| Black | 175 | 221.9 | ± 59.7 | 221.0 | 76.0 | 391.0 | 81 | 256 |
| Other | 159 | 222.1 | ± 56.4 | 221.0 | 95.0 | 470.0 | 78 | 237 |