Table 3.
Summary of Regression Coefficients Relating Academic Performance to Balance Beam
| WJ – Applied Probs | WJ – Letter Word | WJ – Rhyming | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Pre-test B (SE) |
Post-test B (SE) |
Difference B (SE) |
Pre-test B (SE) |
Post-test B (SE) |
Difference B (SE) |
Pre-test B (SE) |
Post-test B (SE) |
Difference B (SE) |
|
| Age | .92 (.10)*** | −.05 (.09) | -- | .70 (.10)*** | −.01 (.08) | -- | .50 (.10)** | .22 (.11) | -- |
| Male | −.12 (.06) | −12 (.05)* | -- | −.16 (.06)* | −.04 (.05) | -- | −.20 (.07)** | −.07 (.07) | -- |
| Head Start | −.59 (.09)*** | −.13 (.07)* | -- | −.20 (.10) | .10 (.07) | -- | −.15 (.10) | −.08 (.09) | -- |
| Treatment | .12 (.10) | −.06 (.07) | −.09 (.07) | −.01 (.11) | −.13 (.08) | −.13 (.09) | −.11 (.11) | .01 (.10) | .06 (.09) |
| Balance BeamA | .18 (.03)*** | .08 (.03)** | .02 (.02) | .12 (.03)*** | .02 (.03) | −.01 (.02) | .16 (.03)*** | .06 (.04) | .05 (.03) |
| Pre-test Outcome | -- | .66 (.03)*** | -- | -- | .74 (.03)*** | -- | -- | .72 (.04)*** | -- |
Note:
*
p < .05;
**
p < .01;
***
p < .001;
B = unstandardized regression coefficient; SE = standard error of regression coefficient; A – Using pre-test score as predictor of pre-test and post-test outcomes but using difference score (EF post-test – EF pre-test) when predicting differences in outcomes (achievement post-test – achievement pre-test).Whereas results in the columns labeled pre-test and post-test do not attend to unmeasured confounder variables, the results in columns labeled difference do and are equivalent to fixed effects analyses for the special case two panel designs.