Farrell, Albert D <br/><br/>
Methodological challenges examining subgroup differences: examples from universal school-based youth violence prevention trials.  [electronic resource] 

 -  Prevention science : the official journal of the Society for Prevention Research  Apr 2013 
 - 121-33 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>1573-6695 
<br/><br/><label>Standard No.: </label>10.1007/s11121-011-0200-2  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Family<br/>Humans<br/>School Health Services--organization & administration<br/>Violence--prevention & control