TABLE 1.
Independent Effects on the Composite Externalizing Disorder Continuous Scores of the Total Group of Children at Ages 2, 6, and 12 Years
| Independent Variables, Age 2 Years | F Value | p Value |
|---|---|---|
| FB sex | 11.2 | .001 |
| FB NHV | 4.6 | .032 |
| FB DRD2/ANKK1 rs1800497 | 1.7 | .178 |
| FB FKBP5 rs1360780 | 3.8 | .024 |
| M in pregnancy | ||
| Mental health | 13.9 | .0002 |
| Pearlin mastery | 0.5 | .460 |
| Self-efficacy | 0.1 | .841 |
| NHV group × self-efficacy | 6.2 | .013 |
| FB DRD2/ANKK1 rs1800497 × M Pearlin mastery | 3.8 | .024 |
| FB FKBP5 rs1360780 × M Pearlin mastery | 4.1 | .017 |
| Independent Variables, Age 6 Yearsb | F Value | p Value |
| FB age 2 externalizing disorders | 109.3 | <.0001 |
| FB sex | 14.3 | .0002 |
| FB DRD2/ANKK1 rs1800497 | 3.5 | .030 |
| FB FKBP5 rs1360780 | 1.5 | .229 |
| FB 5-HTTLPR | 3.4 | .033 |
| M in pregnancy | ||
| Mental health | 6.8 | .010 |
| Pearlin mastery | 1.9 | .166 |
| 6yrs cigs/day | 12.8 | .0004 |
| FB DRD2/ANKK1 rs1800497 × M Pearlin mastery | 3.4 | .033 |
| FB FKBP5 rs1360780 × M Pearlin mastery | 4.6 | .011 |
| Independent Variables, Age 12 Yearsc | F Value | p Value |
| FB age 6 externalizing disorders | 223.3 | <.0001 |
| FB sex | 2.2 | .135 |
| FB 5-HTTLPR | 2.5 | .083 |
| M in pregnancy | ||
| Mental health | 5.5 | .019 |
Note: Boldface data highlights significant results. Independent variables are included in the model at each time point if they have a main or interactive effect at p ≤ .1. FB = firstborn children; M = mother; NHV = nurse home-visiting group vs. controls.
a
Whole model: n = 521, F = 6.0, 14 df, p < .0001, variance = 0.14.
b
Whole model: n = 492, F = 15.6, 15 df, p < .0001, variance = 0.33.
c
Whole model: n = 534, F = 54.1, 5 df, p < .0001, variance = 0.34.