Table 1.
Descriptive statistics and bivariate correlations
| Variable | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. M married 6 mos | 1 | ||||||||||||||||
| 2. M education 6 mos | 0.45 | 1 | |||||||||||||||
| 3. Income-to-needs ratio 6 mos | 0.52 | 0.50 | 1 | ||||||||||||||
| 4. Occupational prestige 6 mos | 0.36 | 0.51 | 0.41 | 1 | |||||||||||||
| 5. M health insurance 6 mos | 0.04 | 0.08 | 0.08 | 0.10 | 1 | ||||||||||||
| 6. Learning materials 6 mos | 0.32 | 0.36 | 0.39 | 0.24 | 0.08 | 1 | |||||||||||
| 7. Economic strain 6 mos | −0.19 | −0.22 | −0.30 | −0.20 | −0.13 | −0.19 | 1 | ||||||||||
| 8. Residential crowding 6 mos | −0.17 | −0.33 | −0.30 | −0.21 | −0.08 | −0.27 | 0.19 | 1 | |||||||||
| 9. Neighborhood safety 6 mos | 0.33 | 0.31 | 0.39 | 0.28 | 0.02 | 0.26 | −0.18 | −0.22 | 1 | ||||||||
| 10. M depression 6 mos | −0.14 | −0.14 | −0.15 | −0.14 | 0.01 | −0.06 | 0.31 | 0.04 | −0.14 | 1 | |||||||
| 11. M anxiety 6 mos | 0.03 | 0.00 | 0.00 | −0.01 | 0.04 | 0.05 | 0.22 | −0.05 | −0.05 | 0.62 | 1 | ||||||
| 12. M somatization 6 mos | −0.14 | −0.20 | −0.20 | −0.16 | 0.06 | −0.09 | 0.23 | 0.07 | −0.15 | 0.44 | 0.50 | 1 | |||||
| 13. M sensitivity 24 mos | 0.38 | 0.39 | 0.38 | 0.33 | 0.03 | 0.30 | −0.16 | −0.21 | 0.21 | −0.13 | 0.01 | −0.17 | 1 | ||||
| 14. EF 36 mos | 0.19 | 0.20 | 0.26 | 0.15 | 0.06 | 0.21 | −0.09 | −0.13 | 0.10 | 0.00 | 0.02 | −0.10 | 0.28 | 1 | |||
| 15. EF 48 mos | 0.24 | 0.30 | 0.29 | 0.23 | 0.08 | 0.26 | −0.15 | −0.17 | 0.12 | −0.02 | 0.03 | −0.09 | 0.37 | 0.37 | 1 | ||
| 16. EF 60 mos | 0.22 | 0.26 | 0.28 | 0.24 | 0.03 | 0.23 | −0.11 | −0.15 | 0.15 | −0.04 | −0.02 | −0.13 | 0.31 | 0.32 | 0.59 | 1 | |
| 17. Cognitive skills 15 mos | 0.15 | 0.21 | 0.21 | 0.17 | 0.02 | 0.23 | −0.10 | −0.17 | 0.12 | −0.07 | 0.01 | −0.12 | 0.32 | 0.22 | 0.37 | 0.34 | 1 |
| N | 1,196 | 1,204 | 1,102 | 1,096 | 1,204 | 1,182 | 1,188 | 1,092 | 1,195 | 1,189 | 1,189 | 1,189 | 1,055 | 973 | 1,009 | 1,038 | 1,092 |
| M or % | 0.49% | 14.44 | 0.28 | 39.95 | 0.81% | 0.74 | 2.29 | −0.19 | 2.99 | −1.40 | −1.34 | −1.39 | 3.30 | −0.54 | −0.13 | 0.29 | 96.26 |
| SD | n/a | 2.82 | 1.02 | 12.04 | n/a | 0.28 | 0.70 | 0.36 | 0.58 | 1.11 | 1.04 | 1.02 | 0.85 | 0.54 | 0.51 | 0.48 | 10.69 |
| Min. | n/a | 6.00 | −3.00 | 16.78 | n/a | 0.00 | 1.00 | −1.01 | 1.00 | −2.53 | −2.53 | −2.53 | 1.00 | −1.98 | −2.14 | −1.98 | 59.00 |
| Max. | n/a | 22.00 | 2.81 | 86.05 | n/a | 1.00 | 4.33 | 1.20 | 4.00 | 1.23 | 1.36 | 1.18 | 5.00 | 1.18 | 1.23 | 1.40 | 132.00 |
Note. Correlations in bold are p < .001; M = maternal; mos = months; for married mothers and maternal health insurance, the proportions of mothers being married and mothers having insurance were presented; scores of income-to-needs ratio, residential crowding, depression, anxiety, and somatization were log-transformed and learning materials were squared to correct skewness.