Table 1.
Descriptive Statistics and Correlations among Study Variables.
| 1. | 2. | 3. | 4. | 5. | 6. | 7. | 8. | 9. | 10. | 11. | 12. | 13. | 14. | 15. | 16. | 17. | 18. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Child sex | - | |||||||||||||||||
| 2. Ethnicity | −.04 | - | ||||||||||||||||
| 3. Single mother status | −.01 | −.03 | - | |||||||||||||||
| 4. Socioeconomic status W1 | .11 | −.39* | −.08 | - | ||||||||||||||
| 5. Verbal interpartner conflict W1 | −.02 | −.21* | −.06 | .02 | - | |||||||||||||
| 6. Physical interpartner conflict W1 | .01 | .13* | −.05 | .06 | .32* | - | ||||||||||||
| 7. Mothers’ problem drinking W1 | −.08 | −.08 | −.07 | .08 | .32* | .24* | - | |||||||||||
| 8. Fathers’ problem drinking W1 | .17 | .02 | .01 | −.05 | .13 | .07 | .23* | - | ||||||||||
| 9. Children’s sleep minutes W1 | −.08 | −.04 | .11 | .14* | .01 | .01 | .01 | −.01 | - | |||||||||
| 10. Children’s sleep efficiency W1 | −.09 | .11 | .03 | .08 | −.01 | .05 | .00 | .02 | .74* | - | ||||||||
| 11. Children’s long wake episodes W1 | .09 | −.11 | −.02 | −.03 | .02 | −.02 | .02 | −.03 | −.63 | −.94* | - | |||||||
| 12. Children’s sleep latency W1 | −.03 | .03 | −.07 | −.04 | .08 | −.02 | .01 | −.11 | −.31 | −.38* | .34* | - | ||||||
| 13. Mothers’ problem drinking W2 | −.01 | −.04 | −.05 | .05 | .25* | .12 | .75* | .30* | .03 | .03 | −.01 | .06 | - | |||||
| 14. Fathers’ problem drinking W2 | −.01 | .02 | −.01 | −.05 | .07 | −.01 | .39* | .51* | −.13 | −.06 | .04 | −.08 | .44* | - | ||||
| 15. Children’s sleep minutes W2 | −.10 | −.20* | −.11 | .11 | .06 | −.06 | .03 | −.05 | .35* | .23* | −.25* | −.11 | −.02 | −.04 | - | |||
| 16. Children’s sleep efficiency W2 | −.11 | −.09 | −.15* | .12 | .08 | −.01 | .05 | .01 | .20* | .30* | −.31* | −.12 | .07 | .01 | .75* | - | ||
| 17. Children’s long wake episodes W2 | .14* | .01 | .21* | −.06 | −.08 | −.03 | −.07 | .00 | −.22* | −.34* | .37* | .11 | −.09 | −.01 | −.61* | −.88* | - | |
| 18. Children’s sleep latency W2 | .02 | .09 | .04 | −.12 | −.06 | .00 | .05 | −.06 | −.17* | −.21* | .22* | .27* | −.02 | −.04 | −.27* | −.30* | .29* | - |
|
| ||||||||||||||||||
| M | - | - | - | 1.62 | 6.02 | .69 | 16.17 | 16.65 | 443.78 | 88.39 | 3.46 | 9.32 | 15.93 | 17.14 | 437.47 | 88.82 | 3.19 | 11.23 |
| SD | - | - | - | .97 | 6.10 | 2.72 | 3.38 | 4.04 | 50.60 | 7.35 | 2.29 | 5.23 | 2.49 | 4.99 | 54.83 | 7.89 | 2.17 | 7.13 |
Note. W1 refers to Wave 1 and W2 refers to Wave 2. Child sex (1 = male, 0 = female), ethnicity (1 = African American, European American) and single mother status (1= single mother family, 0 = not a single mother family) were dichotomized and thus, descriptive statistics are not included for these variables. For children’s sleep minutes, 443.78 min equates to 7 hrs and 24 min and 437.47 min equates to 7 hrs and 17 min.
*
p < .05.