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IC: Stata module to compute measures of interaction contrast (biological interaction)

Author

Listed:
  • Niels Henrik Bruun

    (Aalborg University Hospital)

  • Morten Fenger-Gron

    (Research Unit for General Practice, Aarhus University)

  • Anders Prior

    (Research Unit for General Practice, Aarhus University)

Programming Language

Stata

Abstract

It has become more common to investigate not only single factors effect on a outcome but also to look at the interaction between factors, as is facilitated by the last decadeís massive increase in computer resources to gather and analyses large databases. Several approaches haves been promoted. For the analyzes of binary (or count) data, a fairly well established position holds, that loglinear models estimating measures of relative risk type represent a convenient choice, whereas interactions are often best interpreted if estimated on a linear/additive scale. This code implement the procedure described in Hosmer & Lemeshow (Epidemiology, 1992) and Alfredsson et al. (Eur.J. Epidemiol. 2005) purely in Stata. These two sources however both uses odds ratios as approximations for relational risks. This code on the other hand opens up for using proper estimates of relational risks.

Suggested Citation

  • Niels Henrik Bruun & Morten Fenger-Gron & Anders Prior, 2015. "IC: Stata module to compute measures of interaction contrast (biological interaction)," Statistical Software Components S457975, Boston College Department of Economics, revised 22 Apr 2017.
    • Handle: RePEc:boc:bocode:s457975
    Note: This module should be installed from within Stata by typing "ssc install ic". 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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    File URL: http://fmwww.bc.edu/repec/bocode/i/ic.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/i/ic.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/i/ici.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/i/ici.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/i/icp.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/i/icp.sthlp
    File Function: help file
    Download Restriction: no
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