The study was conducted from December 2011 through January 2013 in Southeastern Pennsylvania.ĭyads were randomized (3:2) to receive the TDP or the Pennsylvania driver's manual (control group). Randomized, single-blind, clinical trial among 217 dyads (1 parent: 1 teenaged learner's-permit holder) to test TDP effectiveness on increasing the quantity and diversity of supervised practice and improving the teenagers' prelicensed driving performance. To determine whether a web-based intervention, the Teen Driving Plan (TDP), can improve the driving performance of teenagers before licensure as measured by the Teen On-road Driving Assessment (tODA). Many studies have failed to show an effect of parent-supervised practice driving on the driving performance of teenagers nevertheless, most Graduated Driver Licensing programs have provisions that require supervised practice. 6 Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania2Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia3Department of Pediatri.5 Department of Psychology, Drexel University, Philadelphia, Pennsylvania. ![]()
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