An Evaluation of the California Drunk Driving Countermeasure System: An evaluation of the impact of a warning letter for first time DUI offenders
M. W. Perrine, California. Dept. of Motor Vehicles. Research and Development Office, Daniel D. Sadler
State of California, Dept. of Motor Vehicles, Research and Development Office, 1986 - Drunk driving
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accident and conviction alcohol-related analysis of covariance analytic groups ANCOVAs were performed assess the effect BAC values blood alcohol concentration California drivers chart control group Covariance Analysis dependent measures dependent variable driver improvement driver record variables DUI conviction DUI offenders DUI warning letter effect of frequency effect of type effect of warning evaluation Exper Experimental Group Experimental II W/L experimental warning letter factors first-DUI offenders frequency of contact frequency of mailing homogeneity of regression Kaestner legal drinking age letter and pamphlet main effect major convictions MANOVA Negligent Operator Treatment number of drinks period interaction period/treatment group combinations potential covariates predictors present study received two mailings significant biasing variables single mailing SPSS standard warning letter statistically significant stepwise stepwise regression subsequent accident Table total accidents Traffic Safety treatment assignment treatment effects Treatment Group Assignment type of W/L type of warning undeliverable Univariate warning letter program warning letter treatment