Peter A Muennig1, Michael Epstein, Guohua Li, Charles DiMaggio. 1. Peter A. Muennig and Michael Epstein are with the Department of Health Policy and Management, Mailman School of Public Health, Columbia University, New York, NY. Charles DiMaggio and Guohua Li are with the Center for Injury Epidemiology and Prevention, Columbia University Medical Center, New York NY. Charles DiMaggio and Guohua Li are also with the Department of Anesthesiology, College of Physicians and Surgeons, and the Department of Epidemiology, Mailman School of Public Health.
Abstract
OBJECTIVE: We evaluated the cost-effectiveness of a package of roadway modifications in New York City funded under the Safe Routes to School (SRTS) program. METHODS: We used a Markov model to estimate long-term impacts of SRTS on injury reduction and the associated savings in medical costs, lifelong disability, and death. Model inputs included societal costs (in 2013 US dollars) and observed spatiotemporal changes in injury rates associated with New York City's implementation of SRTS relative to control intersections. Structural changes to roadways were assumed to last 50 years before further investment is required. Therefore, costs were discounted over 50 consecutive cohorts of modified roadway users under SRTS. RESULTS: SRTS was associated with an overall net societal benefit of $230 million and 2055 quality-adjusted life years gained in New York City. CONCLUSIONS: SRTS reduces injuries and saves money over the long run.
OBJECTIVE: We evaluated the cost-effectiveness of a package of roadway modifications in New York City funded under the Safe Routes to School (SRTS) program. METHODS: We used a Markov model to estimate long-term impacts of SRTS on injury reduction and the associated savings in medical costs, lifelong disability, and death. Model inputs included societal costs (in 2013 US dollars) and observed spatiotemporal changes in injury rates associated with New York City's implementation of SRTS relative to control intersections. Structural changes to roadways were assumed to last 50 years before further investment is required. Therefore, costs were discounted over 50 consecutive cohorts of modified roadway users under SRTS. RESULTS: SRTS was associated with an overall net societal benefit of $230 million and 2055 quality-adjusted life years gained in New York City. CONCLUSIONS: SRTS reduces injuries and saves money over the long run.
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