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PUNAFCC: Stata module to compute population attributable fractions for case-control and survival studies

Author

Listed:
  • Roger Newson

    () (National Heart and Lung Institute at Imperial College London)

Abstract

punafcc calculates confidence intervals for population attributable and unattributable fractions in case-control or survival studies. punafcc can be used after an estimation command whose parameters are interpreted as log rate ratios, such as logit or logistic for case-control data, or stcox for survival data. It estimates the log of the mean rate ratio, in cases or deaths, between 2 scenarios, a baseline scenario ("Scenario 0") and a fantasy scenario ("Scenario 1"), in which one or more exposure variables are assumed to be set to particular values (typically zero), and any other predictor variables in the model are assumed to remain the same. This ratio is known as the population unattributable fraction (PUF), and is subtracted from 1 to derive the population attributable fraction (PAF), defined as the proportion of the cases or deaths attributable to living in Scenario 0 instead of Scenario 1.

Suggested Citation

  • Roger Newson, 2011. "PUNAFCC: Stata module to compute population attributable fractions for case-control and survival studies," Statistical Software Components S457354, Boston College Department of Economics, revised 13 Jan 2017.
  • Handle: RePEc:boc:bocode:s457354 Note: This module should be installed from within Stata by typing "ssc install punafcc". 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/p/punafcc.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/p/punafcc_p.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/p/punafcc.sthlp
    File Function: help file
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