Timing and effect of a safe routes to school program on child pedestrian injury risk during school travel hours: Bayesian changepoint and difference-in-differences analysis.

ABSTRACT:

Background

In 2005, the US Congress allocated $612 million for a national Safe Routes to School (SRTS) program to encourage walking and bicycling to schools. We evaluated the effectiveness of a SRTS in controlling pedestrian injuries among school-age children.

Methods

Bayesian changepoint analysis was applied to model the quarterly counts of pedestrian injuries among 5- to 19-year old children in New York City between 2001 and 2010 during school-travel hours in census tracts with and without SRTS. Overdispersed Poisson model was used to estimate difference-in-differences in injury risk between census tracts with and without SRTS following the changepoint.

Results

In SRTS-intervention census tracts, a change point in the quarterly counts of injuries was identified in t

SUBMITTER: DiMaggio C 

PROVIDER: S-EPMC5005758 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature