Table 2.
Correlation matrix of variables with descriptives
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Actigraph TST 7-day | - | .86** | .62** | −.33** | .10 | .15 | .26** | .09 | .11 |
| 2 | Actigraphy TST weekday | - | 49** | −.33** | .14 | .25** | .16† | .04 | .19* | |
| 3 | Actigraphy TST weekend | - | −.25* | −.03 | .07 | .26** | −.01 | −.007 | ||
| 4 | Actigraphy TST variability | - | .02 | −.02 | −.12 | .08 | .05 | |||
| 5 | Parent-reported TST | - | .03 | .09 | .26** | .13† | ||||
| 6 | P-report monitoring | - | .13 | .24** | .07 | |||||
| 7 | Y-report monitoring | - | .03 | .11 | ||||||
| 8 | P-Bedtime expectations ^ | - | .25** | |||||||
| 9 | P-Bedtime knowledge | - | ||||||||
| Mean | 374.17 | 375.27 | 371.23 | 19.9 | 508.2 | 33.42 | 18.14 | -- | 2.44 | |
| Standard deviation | 86.05 | 86.10 | 83.64 | 7.87 | 88.8 | 5.67 | 4.58 | -- | .73 |
Note: TST = total sleep time; P = parent; Y = youth
†
= p< 10;
*
= p ≤.0.5;
**
= p ≤ .0.1;
^
P-bedtime expectations is a dichotomous variable; approximately 66% of the parents were observed to have expectations about bedtime.