Table1.
Descriptive statistics for analytic sample (N=2865).
| Variables | M or proportion | Observed range | |||||||||
| Adolescent’s Age (month) | 186.35 | 173-221 | |||||||||
| Adolescent Male (female as reference group) | 51.8% | 0-1 | |||||||||
| Adolescent White (reference group) | 16.8% | 0-1 | |||||||||
| Adolescent Black | 47.4% | 0-1 | |||||||||
| Adolescent Hispanic/Latino | 23.7% | 0-1 | |||||||||
| Adolescent Others or Multi-racial | 12.1% | 0-1 | |||||||||
| PCG Has Less Than High School Education (reference group) | 17.5% | 0-1 | |||||||||
| PCG Has High School Diploma or GED | 19.3% | 0-1 | |||||||||
| PCG Has Some College or Tech | 44.7% | 0-1 | |||||||||
| PCG Graduated from College Or Above | 18.5% | 0-1 | |||||||||
| Poverty Threshold < 49% (reference group) | 14.1% | 0-1 | |||||||||
| Poverty Threshold 50-99% | 17% | 0-1 | |||||||||
| Poverty Threshold 100-199% | 28.9% | 0-1 | |||||||||
| Poverty Threshold 200-299% | 14.3% | 0-1 | |||||||||
| Poverty Threshold 300% Or Above | 25.7% | 0-1 | |||||||||
| Family Structure –Both biological parents (reference group) | 26.9% | 0-1 | |||||||||
| Family Structure –Biological mom with new partner | 23.4% | 0-1 | |||||||||
| Family Structure –Biological mom only | 38.2% | 0-1 | |||||||||
| Family Structure –Biological dad with new partner | 3.6% | 0-1 | |||||||||
| Family Structure –Biological dad only | 2.7% | 0-1 | |||||||||
| Family Structure –Other PCG | 5.1% | 0-1 | |||||||||
| Pearson correlation | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | M /SD | Observed range |
| 1.Social messaging | -- | 4.14/3.86 | 0-24 | ||||||||
| 2.Web surfing | .23*** | -- | 1.01/1.67 | 0-16 | |||||||
| 3.TV/movies | .26*** | .22*** | -- | 2.66/2.17 | 0-16 | ||||||
| 4.Gaming | .16*** | .21*** | .24*** | -- | 1.97/2.36 | 0-16 | |||||
| 5.Problems falling asleep | .04** | .10*** | .09*** | .06** | -- | 1.76/2.03 | 0-7 | ||||
| 6.Problems staying asleep | .06** | .08*** | .11*** | .05* | .50*** | -- | 1.28/1.95 | 0-7 | |||
| 7.Weekday sleep duration | −.17** | −.06** | −.05** | −.04* | −.13*** | −.09*** | -- | 8.0/1.25 | 2-13 | ||
| 8.Age 15 Depressive symptoms | .06** | .06*** | .07*** | .08*** | .35*** | .27*** | −.09*** | -- | .60/.60 | 0-3 | |
| 9.Age 9 Depressive symptoms | −.05** | −.007 | −.05* | .06** | .05* | .04 | .05* | .12*** | -- | .17/.23 | 0-2 |