Table 1.
Adolescent and middle-aged adult sample demographics.
| Adolescents | Adults | ||
|---|---|---|---|
| Total N | 44 | 44 | |
| Age (years) | 16.2 ± 1.0 | 38.0 ± 4.2 | |
| (14.3 – 17.8) | (30.8 – 45.8) | ||
| Sex (N) | |||
| Females | 23 | 21 | |
| Males | 21 | 23 | |
| Ancestry/race (N) | |||
| African American | 19 | 15 | |
| White | 16 | 26 | |
| Other1 | 9 | 3 | |
| Ethnicity (N) | |||
| Non-Hispanic | 34 | 39 | |
| Hispanic2 | 10 | 5 | |
| Morningness Score | 36.8 ± 5.3 | 38.8 ± 6.4 | |
| % Morning Type | 7 | 30 | |
| Mid-sleep on free days3 | 4:27 ± 1:13 | 4:25 ± 1:14 | |
| Home Sleep Schedule4 | |||
| Lights off | 23:40 ± 1:11 | 23:03 ± 1:10 | |
| Lights on | 08:40 ± 1:11 | 8:03 ± 1:10 | |
1
The Other category of self-reported ancestries in the adolescent sample includes multiracial (n=7), Native American/Alaskan Native (n=1), and unknown (n=1); adult sample includes Asian (n=2) and unknown (n=1).
2
The Hispanic adolescent sample includes these self-reported ancestries: African American (n=1), White (n=5), Native American/Alaskan Native (n=1), multiracial (n=2), and unknown (n=1). The Hispanic adult sample includes these self-reported ancestries: White (n=4) and unknown (n=1).
3
N=41 for the adolescent group; n=43 for the adult group.
4
Home sleep schedules were tailored to each individual based on pre-study sleep logs.