CTOHRI: Stata module to translate From Counts to Hazard Ratio

Nicola Orsini ()
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Nicola Orsini: Institute of Environmental Medicine, Karolinska Institutet

Statistical Software Components from Boston College Department of Economics

Abstract: ctohri estimates the hazard ratio along with a confidence interval and Wald-type hypothesis test under the assumptions (constant baseline hazard and proportional hazards) of an Exponential (or Poisson) survival model. The force underlying censoring should be similar in both groups. Specifically, it requires six inputs: the number of participants, number of events, and total follow-up time for both the treatment and control groups. It can be used for meta-analyses when individual-level survival data are not available.

Language: Stata
Requires: Stata version 12
Keywords: hazard ratio; survival model; immediate command (search for similar items in EconPapers)
Date: 2025-07-27
Note: This module should be installed from within Stata by typing "ssc install ctohri". 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/c/ctohri.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/c/ctohri.sthlp help file (text/plain)

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