. Author manuscript; available in PMC: 2008 Aug 1.

Published in final edited form as: Am J Prev Med. 2007 Aug;33(2 Suppl):S130–S143. doi: 10.1016/j.amepre.2007.04.011

Table 8.

regression model for effect size moderators for selected/indicated pull-out programs (N=108)

Study characteristic	β
Method characteristics
Random assignment	.05
Pretest adjustment	-.03
Attrition (% loss)	-.21^**
Number of items in outcome measure	-.15^*
General study characteristics
Year of publication	-.10
Published (1) vs. unpublished (0)	-.08
Student characteristics
Risk level (1=general; 2=at-risk; 3=indicated)	.19^**
Amount, format, & quality of treatment
Individual treatment	.11
Implementation problems (1=yes, 2=possible, 3=no)	.18^**
Treatment modality
Behavioral strategies	.15^*

Note: weighted random effects analysis; coefficients are standardized.

p<.10

^**

p<.05