Table 2.
Correlation Matrix for Maternal and Child Characteristics of Interest
| Variable | M | SD | N | Min | Max | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Prenatal Maternal Depression | 4.45 | 3.45 | 411 | 0 | 17 | - | ||||||||
| 2. Family Monthly Income | 3156.45 | 1438.93 | 310 | 250 | 5000 | −0.23 | - | |||||||
| 3. Maternal Education | 5.56 | 1.11 | 316 | 1 | 7 | −0.04 | 0.56 | - | ||||||
| 4. Health insurance | - | - | 314 | - | - | 0.16 | −0.55 | −0.58 | - | |||||
| 5. Prenatal Maternal Trait Anxiety | 29.17 | 7.51 | 411 | 20 | 63 | 0.69 | −0.23 | −0.07 | 0.19 | - | ||||
| 6. Prenatal Maternal State Anxiety | 25.76 | 6.64 | 411 | 20 | 59 | 0.53 | −0.19 | −0.04 | 0.13 | 0.66 | - | |||
| 7. Child Alpha Asymmetry Score | −0.02 | 0.34 | 415 | −1.13 | 1.02 | 0.02 | −0.08 | −0.15 | 0.13 | 0.00 | 0.00 | - | ||
| 8. Child Externalizing | 4.58 | 3.37 | 267 | 0 | 16 | 0.21 | −0.21 | −0.06 | 0.11 | 0.21 | 0.20 | 0.04 | - | |
| 9. Child Internalizing | 2.88 | 2.52 | 267 | 0 | 11 | 0.22 | −0.25 | −0.12 | 0.18 | 0.24 | 0.19 | 0.08 | 0.40 | - |
Note: Maternal depression and anxiety scores were measured during the prenatal period, child frontal alpha asymmetry, internalizing, and externalizing problems were measured at 5, 7, 9, or 11 years of age. Health insurance was coded as a categorical variable (0 = commercial health insurance, 1 = public assistance).