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. 2020 Sep 25;17(9):e1003272. doi: 10.1371/journal.pmed.1003272

Fig 1. Event study estimates for the association of PDMP mandate implementation with adolescent IDU relative to comparison states.

Fig 1

This graph presents event study estimates for the association of PDMP mandate implementation with adolescent IDU relative to comparison states. For this graph, the PDMP mandate implementation variable is a series of binary indicators denoting the year relative to PDMP mandate implementation. Adolescents in comparison states are coded as 0 for this series of binary indicators. The period before PDMP mandate implementation (−2/−1) was the reference period. Each point compares the difference in IDU between states that implemented a PDMP mandate and comparison states. The error bars represent 95% confidence intervals (where period −2/−1 does not have a 95% confidence interval because it was the reference period). IDU, injection drug use; PDMP, prescription drug monitoring program.