Fig. 4From: Moving beyond the classic difference-in-differences model: a simulation study comparing statistical methods for estimating effectiveness of state-level policiesRoot mean squared error for (4a) the linear and (4b) nonlinear models under the null effect simulation condition. We present this graph stratified by linear and non-linear models, as there is no method to compare RMSE across linear and nonlinear models that yields a fair comparisonBack to article page