@article{ref1,
title="Long-term effects of a multi-component community-level intervention to reduce single vehicle nighttime crashes: follow up findings from a 24-community randomized trial",
journal="Journal of studies on alcohol and drugs",
year="2024",
author="Saltz, Robert and Paschall, Mallie J.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="OBJECTIVE: This follow up study examines whether a multi-component, high-visibility alcohol enforcement intervention implemented in 12 California cities had long-term effects on alcohol-related motor vehicle crashes beyond the time period of the original study. Previous results indicated a significant reduction in single vehicle nighttime (SVN) crashes among 15 to 30-year-olds in intervention cities relative to controls (Saltz et al., 2021). <br><br>METHOD: A randomized trial was conducted with 24 randomly chosen California cities from 2012 to 2017 to evaluate a multi-component intervention to reduce excessive drinking and driving while impaired among adolescents and young adults. Twelve of the cities were randomly assigned to the intervention condition and implemented high-visibility alcohol enforcement operations and other components from April 2013 to March 2016. Multi-level negative binomial regression analyses were conducted with motor vehicle crash data from 2010 to 2021 to examine whether single vehicle nighttime (SVN) crashes among 15 to 30-year-olds decreased in intervention cities relative to controls after the multi-component intervention was implemented. Analyses controlled for community sociodemographic characteristics, the overall time trend, the COVID pandemic, and pre-intervention levels of SVN crashes and adjusted for correlation of repeated observations within cities over time. <br><br>RESULTS: Regression analyses indicated a significantly lower level of monthly SVN crashes among 15-to-30-year-olds in intervention cities during post-intervention months through 2021 relative to control cities [Event Rate Ratio (95%CI) = 0.88 (0.79, 0.98), p<.05] when controlling for community sociodemographic characteristics, the overall time trend, COVID, and pre-intervention levels of SVN crashes. <br><br>CONCLUSIONS: Study findings suggest that a multi-component, high-visibility alcohol enforcement intervention can have long-term effects on alcohol-related motor vehicle crashes and related injuries and fatalities among adolescent and young adult drivers.<p /> <p>Language: en</p>",
language="en",
issn="1937-1888",
doi="10.15288/jsad.24-00103",
url="http://dx.doi.org/10.15288/jsad.24-00103"
}