Abstract
In this randomized trial, the authors compared the instructional quality of instructor candidates trained in instructional methods through an Internet-based versus a traditional classroom-led version of the American Heart Association Core Instructor Course. The self-guided, Internet-based group had significantly higher posttest scores than did the traditional instructor-led group (although not when adjusted for pretest scores). The Internet-based group scores changed from 54% to 67%, exceeding the a priori definition of 8% as a minimally practically significant improvement (instructor-led group scores changed from 49% to 53%). The Internet-based course appeared to be a suitable alternative to the traditional course.