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Table 3 Results of regression model (n = 21) for percentage of pregnant women doctor shopping over time, where I is an indicator value that equals 1 if observation is on or after when Public Law 194 [28] was passed and 0 otherwise, R is the time period minus the time when Public Law 194 was passed, and I*R is the interaction of these two independent variables

From: Assessing the impact of Indiana legislation on opioid-based doctor shopping among Medicaid-enrolled pregnant women: a regression analysis

Variable Coefficient Value Standard Error p-value
Intercept 0.106 0.012 < 0.000
I −0.015 0.021 0.493
R 0.003 0.001 0.014
I*R −0.024 0.007 0.004