Table 2.
Unadjusted Means for Sleep Variables
| Total Sleep Duration Mean ± SD | Coefficient of Variation (CV) Mean ± SD | |
|---|---|---|
| Gender | ||
| Female | **480.451 (53.77) | 16.833 (8.41) |
| Male | **462.521 (58.60) | 15.953 (8.70) |
| Ethnicity | ||
| Minority | *461.032 (59.16) | *17.924 (9.21) |
| Non-minority | *483.329 (51.81) | *14.550 (7.34) |
| Tanner Stage | ||
| Stage 1 | 470.788 (36.90) | 11.396 (5.45) |
| Stage 2 | 490.552 (69.95) | 14.927 (6.93) |
| Stage 3 | 468.069 (58.46) | 16.968 (10.55) |
| Stage 4 | 473.448 (34.09) | 13.810 (7.64) |
| Stage 5 | 468.712 (57.28) | 17.222 (8.69) |
| Neighborhood Distress | ||
| Yes | *457.36 (52.45) | *18.48 (10.00) |
| No | *476.61 (57.79) | *15.56 (7.81) |
| Parent education | ||
| Some HS | 454.204 (50.52) | 17.520 (5.70) |
| HS diploma/GED | 460.301 (64.72) | 18.960 (9.64) |
| Some college/voc | 485.110 (50.26) | 15.123 (6.71) |
| College | 467.163 (56.53) | 15.577 (9.15) |
| Grad/professional | 460.248 (56.77) | 15.867 (7.66) |
| Parent Income | ||
| < 5,000 | 441.937 (59.46) | 20.609 (14.36) |
| 5000–9,999 | 463.080 (73.99) | 17.772 (7.15) |
| 10–19,000 | 470.164 (51.30) | 17.608 (6.82) |
| 20–29,999 | 465.811 (51.47) | 19.569 (8.84) |
| 30–39,999 | 471.504 (59.13) | 16.899 (9.94) |
| 40–49,999 | 470.286 (69.87) | 14.802 (8.56) |
| 50–59,999 | 477.609 (49.88) | 14.667 (6.60) |
| Over 60,000 | 487.537 (51.81) | 14.154 (6.82) |
| ADHD | ||
| Yes | 473.896 (70.50) | 16.062 (8.67) |
| No | 470.419 (55.80) | 16.392 (8.58) |
| Asthma | ||
| Yes | 468.265 (58.45) | 15.042 (7.36) |
| No | 472.103 (56.57) | 16.773 (8.86) |
| Premature | ||
| Yes | 467.540 (53.16) | 15.758 (8.64) |
| No | 473.918 (59.52) | 17.263 (8.41) |
*
p<.05
**
p<.01