Table 3.
Descriptive statistics
|
Descriptive statistics of continuous measures
| ||||
|---|---|---|---|---|
| Variable | N | Mean | Standard Deviation | Range |
| Change in positive engagement from 2 to 3 | 352 | 0.03 | 0.15 | −0.42 – 0.43 |
| PC report of aggression at age 2 (t scores) | 384 | 59.83 | 8.17 | 50.00 – 93.00 |
| Teacher report of aggression at age 9.5 | 385 | 57.02 | 8.51 | 50.00 – 95.00 |
|
Descriptions of categorical measures
| |||
|---|---|---|---|
| Variable | Categories | N | % of sample |
| Intervention status | Control group = 0 | 197 | 51.2% |
| Family Check Up = 1 | 188 | 48.8% | |
| Parent education | Less than high school = 0 | 78 | 20.3% |
| High school or more = 1 | 280 | 79.7% | |
| Family income | $14,999 or less = 0 | 178 | 46.7% |
| $15,000 or more = 1 | 207 | 53.3% | |
| Single parent status | Married or cohabitating = 0 | 228 | 59.4% |
| Single parent = 1 | 156 | 40.5% | |
| Child gender | Male = 0 | 188 | 48.8% |
| Female = 1 | 197 | 51.2% | |
| Child race | Caucasian/other = 1 | 232 | 60.3% |
| Black, African-American/biracial = 1 | 153 | 39.7% | |
| Child ethnicity | Caucasian/other = 0 | 334 | 86.8% |
| Hispanic/Latino = 1 | 51 | 13.2% | |
| Site location* | Pittsburgh, PA | 125 | 32.5% |
| Charlottesville, VA | 101 | 26.2% | |
| Eugene, OR | 159 | 41.3% | |
*
in the analyses Location was included by dummy coding Pittsburgh and Charlottesville with Eugene serving as the comparison group