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Challenges to validity in single‐group interrupted time series analysis
Journal of Evaluation in Clinical Practice, 2016AbstractRationale, aims and objectivesSingle‐group interrupted time series analysis (ITSA) is a popular evaluation methodology in which a single unit of observation is studied; the outcome variable is serially ordered as a time series, and the intervention is expected to “interrupt” the level and/or trend of the time series, subsequent to its ...
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Interrupted Time Series Analysis Techniques in Pharmacovigilance
2013This thesis considers an approach to evaluate the effectiveness of risk communications for prescription drugs by performing interrupted time series analysis of prescription drug volumes prior to and after the risk communication date. The paper presents methods for detecting change in the presence of autocorrelation and techniques to reduce bias in ...
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A matching framework to improve causal inference in interrupted time‐series analysis
Journal of Evaluation in Clinical Practice, 2017AbstractRationale, aims, and objectivesInterrupted time‐series analysis (ITSA) is a popular evaluation methodology in which a single treatment unit's outcome is studied over time and the intervention is expected to “interrupt” the level and/or trend of the outcome, subsequent to its introduction. When ITSA is implemented without a comparison group, the
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[Design and analysis of two groups interrupt time series].
Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi, 2019Interrupted time-series (ITS) is a quasi-experimental design which evaluates the effectiveness of an intervention based on time-series outcome variables. Compared with the single group of ITS, the two groups of ITS can better control the influence of pre-interventional confounding factors and evaluate the effectiveness of the intervention.
Y, Li +5 more
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Robust testing of level changes in interrupted time-series analysis
Journal of Statistical Computation and Simulation, 2006Ramsey and Ramsey [Ramsey, P.P. and Ramsey, P.H., 2003, Comparing lease-squares lines for testing level changes in interrupted time-series analysis. Journal of Statistical Computation and Simulation, 73, 31–44.] have shown that a composite procedure (CP) can provide accurate tests of level changes in interrupted time-series analysis.
Patricia P. Ramsey, Philip H. Ramsey
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Openness and censorship in the European Union: An interrupted time series analysis
European Union Politics, 2014This study examines transparency and censorship in the Council of Ministers of the European Union from 1999 to 2009. We measure transparency by considering the timeliness of record release and the levels of censorship applied to records when (and if) they are released.
Cross, James P, Bølstad, Jørgen
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Statistical methods for meta-analysis of interrupted time series studies
2023An interrupted time series study is a type of non-randomised study that allows researchers to quantify the immediate and long-term impact of interruptions like public health policies. For example, the impact of a mass media campaign on HIV testing rates.
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Interrupted Time-Series Analysis
Journal of Policy Analysis and Management, 1981Stephen M. Meyer +4 more
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An analysis of covariance markov model for interrupted time series experiments
Communications in Statistics - Theory and Methods, 1979A simple Markov model is described for the analysis of interrupted time series experiments that employ a control series. The procedure involves regressing the experimental preintervention series on the control preintervention series and then testing for change in the experimental postintervention series which is free of change in the control series.
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