Age
Visit vs Percentage of total sleep duration in Stage 2 from type II polysomnography
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Visit 1 | 2,911 | 61.9 | ± 12.0 | 63.0 | 0.0 | 95.0 | - | 2,911 |
| Visit 2 | 1,026 | 60.5 | ± 13.5 | 62.0 | 0.0 | 93.0 | 1,885 | 2,911 |
Age at Sleep Visit 1 vs Percentage of total sleep duration in Stage 2 from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 2,911 | 61.9 | ± 12.0 | 63.0 | 0.0 | 95.0 | - | 2,911 |
| 67.0 to 72.0 years | 728 | 61.6 | ± 11.1 | 63.0 | 0.0 | 86.0 | - | 728 |
| 72.0 to 76.0 years | 728 | 61.1 | ± 12.1 | 62.0 | 0.0 | 92.0 | - | 728 |
| 76.0 to 80.0 years | 728 | 62.4 | ± 12.2 | 64.0 | 0.0 | 95.0 | - | 728 |
| 80.0 to 90.0 years | 727 | 62.6 | ± 12.6 | 64.0 | 0.0 | 90.0 | - | 727 |
Gender vs Percentage of total sleep duration in Stage 2 from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 2,911 | 61.9 | ± 12.0 | 63.0 | 0.0 | 95.0 | - | 2,911 |
| Female | - | - | - | - | - | - | - | - |
| Male | 2,911 | 61.9 | ± 12.0 | 63.0 | 0.0 | 95.0 | - | 2,911 |
Gender vs Percentage of total sleep duration in Stage 2 from type II polysomnography
Visit 2
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 1,026 | 60.5 | ± 13.5 | 62.0 | 0.0 | 93.0 | 1,885 | 2,911 |
| Female | - | - | - | - | - | - | - | - |
| Male | 1,026 | 60.5 | ± 13.5 | 62.0 | 0.0 | 93.0 | 1,885 | 2,911 |
Race Category vs Percentage of total sleep duration in Stage 2 from type II polysomnography
Visit 1
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 2,911 | 61.9 | ± 12.0 | 63.0 | 0.0 | 95.0 | - | 2,911 |
| White | 2,651 | 61.8 | ± 12.1 | 63.0 | 0.0 | 95.0 | - | 2,651 |
| African American | 99 | 63.7 | ± 13.7 | 65.0 | 0.0 | 83.0 | - | 99 |
| Asian | 85 | 62.2 | ± 8.6 | 63.0 | 30.0 | 75.0 | - | 85 |
| Native Hawaiian or Other Pacific Islander | 3 | 58.0 | ± 9.5 | 53.0 | 52.0 | 69.0 | - | 3 |
| American Indian or Alaskan Native | 1 | 70.0 | - | 70.0 | 70.0 | 70.0 | - | 1 |
| Multiracial | 30 | 64.0 | ± 8.2 | 63.5 | 50.0 | 82.0 | - | 30 |
| Unknown | 42 | 62.2 | ± 9.7 | 62.0 | 42.0 | 89.0 | - | 42 |
Race Category vs Percentage of total sleep duration in Stage 2 from type II polysomnography
Visit 2
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 1,026 | 60.5 | ± 13.5 | 62.0 | 0.0 | 93.0 | 1,885 | 2,911 |
| White | 896 | 60.6 | ± 13.1 | 62.0 | 0.0 | 92.0 | 1,755 | 2,651 |
| African American | 41 | 58.7 | ± 20.2 | 65.0 | 0.0 | 80.0 | 58 | 99 |
| Asian | 49 | 59.4 | ± 16.4 | 62.0 | 0.0 | 88.0 | 36 | 85 |
| Native Hawaiian or Other Pacific Islander | 3 | 77.7 | ± 13.4 | 72.0 | 68.0 | 93.0 | - | 3 |
| American Indian or Alaskan Native | 1 | 59.0 | - | 59.0 | 59.0 | 59.0 | - | 1 |
| Multiracial | 14 | 61.9 | ± 10.1 | 61.0 | 46.0 | 84.0 | 16 | 30 |
| Unknown | 22 | 60.3 | ± 9.9 | 59.0 | 39.0 | 80.0 | 20 | 42 |