Table 1.
Pretest Equivalence of Experimental Conditions for Participants Who Did or Did Not Provide Biological Data
| With Biological Data |
Without Biological Data |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Intervention (n = 97) |
Control (n = 86) |
Intervention (n = 90) |
Control (n = 94) |
|||||||
| Variables at Pretest | M | SD | M | SD | M | SD | M | SD | F (1,363) | p |
| Gender (male) | .29 | .46 | .44 | .50 | .46 | .50 | .46 | .50 | 2.192 | .140 |
| Family socioeconomic risk | 1.91 | 1.27 | 1.94 | 1.38 | 2.18 | 1.39 | 2.05 | 1.54 | .300 | .584 |
| Life stress | 2.41 | 1.63 | 2.06 | 1.48 | 2.23 | 1.60 | 2.18 | 1.74 | .796 | .373 |
| Substance use (past month) | .30 | .68 | .34 | .70 | .26 | .57 | .37 | .80 | .294 | .588 |
| Smoking (past month) | .08 | .34 | .12 | .45 | .08 | .34 | .19 | .57 | .767 | .382 |
| Alcohol use (past month) | .22 | .48 | .22 | .45 | .18 | .41 | .18 | .42 | .000 | .988 |
| Non-supportive parenting | −.07 | 2.00 | −.23 | 1.83 | .30 | 2.04 | .04 | 1.81 | .050 | .824 |
| Emotional support (FSI) | 22.32 | 3.13 | 22.67 | 2.97 | 22.41 | 3.13 | 22.37 | 2.84 | .389 | .533 |
| Social support (CSS) | 16.99 | 2.68 | 17.17 | 3.00 | 17.32 | 3.05 | 16.46 | 3.08 | 2.890 | .090 |
| Ineffective arguing (DAI) | 13.94 | 5.35 | 13.40 | 5.10 | 14.13 | 5.01 | 14.48 | 4.83 | .701 | .403 |
| Discussion quality (DQS) | 2.04 | 2.26 | 2.03 | 2.49 | 2.58 | 3.20 | 2.60 | 3.00 | .001 | .975 |
Note. FSI = Family Support Inventory. CSS = Carver Support Scale. IAI = Ineffective Arguing Inventory. DQS = Discussion Quality Scale.