Regression model
Interrupted Time Series (ITS) Analysis
Interrupted Time Series analysis is a quasi-experimental design that estimates the effect of a single, well-dated intervention by comparing the trajectory of an outcome before and after it occurs. Formalised as segmented regression by Wagner and colleagues (2002) and popularised as a public-health evaluation tutorial by Bernal, Cummins and Gasparrini (2017), it separates the intervention's impact into a change in level and a change in slope.
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Sources
- Bernal, J. L., Cummins, S., & Gasparrini, A. (2017). Interrupted time series regression for the evaluation of public health interventions: a tutorial. International Journal of Epidemiology, 46(1), 348-355. DOI: 10.1093/ije/dyw098 ↗
- Wagner, A. K., Soumerai, S. B., Zhang, F., & Ross-Degnan, D. (2002). Segmented regression analysis of interrupted time series studies in medication use research. Journal of Clinical Pharmacy and Therapeutics, 27(4), 299-309. DOI: 10.1046/j.1365-2710.2002.00430.x ↗
Related methods
Referenced by
Adaptive ABAB DesignAdaptive Cohort StudyAdaptive Ecological StudyAdaptive Single-Subject Experimental DesignBayesian Causal Impact AnalysisBayesian Event Study DesignBayesian Structural Time SeriesCausal Impact AnalysisCounterfactual Impact Evaluation in Education ResearchCrossover Natural ExperimentDynamic Interrupted Time SeriesEvent Study DesignEvent Study Design in Education ResearchHeterogeneous treatment effect Causal impact analysisHeterogeneous Treatment Effect Interrupted Time SeriesLongitudinal Program EvaluationMachine learning-augmented causal impact analysisMachine Learning-Augmented Interrupted Time SeriesMatched Phase IV StudyMulti-period Causal Impact AnalysisMulti-period Interrupted Time SeriesPanel Data Interrupted Time SeriesPolicy Evaluation Causal Impact AnalysisPolicy Evaluation Event Study DesignPolicy Evaluation Interrupted Time SeriesPolicy Evaluation Synthetic Control MethodPragmatic ABAB designPragmatic Multiple Baseline DesignRegression DiscontinuityRegression discontinuity design in education researchRobust Causal Impact AnalysisRobust Interrupted Time SeriesSensitivity analysis for causality in education researchSpatial Interrupted Time SeriesStepped Wedge Cluster Randomized TrialSynthetic ControlSynthetic Control Method in Education Research