Table 1.
Characteristics of 1046 Children from Project Viva, Overall and by Sleep Duration at 5 – 7 Years.
| Characteristics | Overall | Sleep Duration at 5 – 7 Years of Age, Hours/Day
|
||
|---|---|---|---|---|
| < 9 | 9 to < 10 | ≥ 10 | ||
|
| ||||
| Sample size | N=1046 | 61 | 239 | 746 |
|
| ||||
| Maternal and Household | Mean (SD) or % | |||
|
| ||||
| Maternal age (y) | 32.3 (5.1) | 30.3 (6.1) | 31.9 (5.7) | 32.6 (4.8) |
| Parity, nulliparous, % | 47.9 | 30.7 | 42.9 | 50.9 |
| Maternal Education, ≥ College graduate, % | 70.8 | 38.8 | 59.9 | 77.0 |
| Paternal Education, ≥ College graduate, % | 65.7 | 30.4 | 53.4 | 72.4 |
| Household income >$70,000/y, % | 63.4 | 31.4 | 54.7 | 68.9 |
| Married or cohabitating, % | 92.9 | 78.7 | 89.6 | 95.1 |
| Home Observation Measurement of the | 18.4 (2.2) | 17.0 (2.6) | 17.8 (2.3) | 18.7 (2.0) |
| Environment, Short Form Score | ||||
|
| ||||
| Child | ||||
| Girl, % | 50.3 | 45.8 | 46.1 | 52.0 |
| Race/ethnicity, % | ||||
| White | 66.4 | 18.7 | 54.2 | 74.2 |
| Black | 14.9 | 42.8 | 24.7 | 9.5 |
| Hispanic | 3.6 | 9.1 | 4.2 | 2.9 |
| Asian | 3.3 | 4.1 | 4.6 | 2.8 |
| Other | 11.9 | 25.3 | 12.2 | 10.6 |
| Television viewing at age 7 y (h/d) | 1.5 (1.0) | 2.3 (1.3) | 1.8 (1.1) | 1.4 (0.9) |