XTITSA: Stata module for performing interrupted time-series analysis for panel data

Ariel Linden

Statistical Software Components from Boston College Department of Economics

Abstract: xtitsa performs an interrupted time series analysis (ITSA) when individual-level data are available for analysis (panel data). xtitsa estimates the effect of an intervention when the outcome variable is ordered as an evenly-spaced time series and a number of observations are available in both preintervention and postintervention periods. The study design is referred to as an interrupted time-series analysis because the intervention is expected to interrupt the level or trend subsequent to its introduction. xtitsa estimates treatment effects for either a single-group (i.e., the treatment group with preintervention and postintervention observations) or a multiple-group comparison (that is, the treatment group is compared with a control group). Additionally, xtitsa can estimate treatment effects for multiple treatment periods. xtitsa is a wrapper for xtgee so all available options are allowed except "eform".

Language: Stata
Requires: Stata version 11
Keywords: interrupted time series; panel data; quasi-experimental studies; causal inference (search for similar items in EconPapers)
Date: 2021-02-02, Revised 2024-12-29
Note: This module should be installed from within Stata by typing "ssc install xtitsa". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/x/xtitsa.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/x/xtitsa.sthlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/x/xtitsa_example.dta sample data file (application/x-stata)
http://fmwww.bc.edu/repec/bocode/x/xtitsa_example_single.dta sample data file (application/x-stata)

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