Table 1.
Descriptive Statistics of Study Variables
| n | % of sample | |||
|---|---|---|---|---|
| Intervention status | Control group = 0 | 364 | 49.8 | |
| Intervention group = 1 | 367 | 50.2 | ||
| Parent education | Less than high school = 0 | 172 | 23.5 | |
| High school or more = 1 | 559 | 76.5 | ||
| Family income | $14 999 or less = 0 | 348 | 47.6 | |
| $15 000 or more = 1 | 383 | 52.4 | ||
| Child gender | Female = 0 | 362 | 49.5 | |
| Male = 1 | 369 | 50.5 | ||
| Child race | Caucasian/other = 0 | 432 | 59.1 | |
| Black, African-American/biracial = 1 | 299 | 40.9 | ||
| Child ethnicity | Non-Hispanic = 0 | 631 | 86.3 | |
| Hispanic/Latino = 1 | 98 | 13.4 | ||
| n | M | SD | ||
| Observed positive behavior support (age 2) | COIMP | 725 | 6.00 | 1.04 |
| HOME | 730 | 29.34 | 5.36 | |
| RACS | 726 | .33 | .14 | |
| Child measures (age 2) | Disruptive behavior (P) | 730 | 20.70 | 7.30 |
| Relationship conflict (P) | 730 | 28.33 | 7.43 | |
| Inhibitory control (P) | 720 | 3.97 | .80 | |
| Pre-academic skills (P) | 728 | 60.24 | 25.19 | |
| Child outcomes (age 7.5) | Disruptive behavior (T) | 313 | 7.76 | 10.14 |
| Effortful control (T) | 286 | .01 | 2.66 | |
| Social competence (T) | 309 | −.01 | 2.42 | |
| Academic skills (C) | 505 | 100.69 | 13.31 | |
Note: C = child assessed; COIMP = coder impressions; HOME = home inventory; P = parent reported; T = teacher reported; RACS = relationship affect coding system.