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

Author

Listed:
  • Ariel Linden

    (Linden Consulting Group, LLC)

Programming Language

Stata

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".

Suggested Citation

  • Ariel Linden, 2021. "XTITSA: Stata module for performing interrupted time-series analysis for panel data," Statistical Software Components S458903, Boston College Department of Economics, revised 23 Mar 2021.
    • Handle: RePEc:boc:bocode:s458903
    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.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/x/xtitsa.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtitsa.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtitsa_example.dta
    File Function: sample data file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtitsa_example_single.dta
    File Function: sample data file
    Download Restriction: no
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