CSTI: Stata module that modifies csi command in order to use total numbers rather than individual cell counts

Philip M Jones ()
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Philip M Jones: University of Western Ontario

Statistical Software Components from Boston College Department of Economics

Abstract: Binary outcomes (such as mortality) are typically published in a Table as the number of events over the number of patients or subjects in the group, i.e. "n/N". If one wants to compute a risk ratio and P value, Stata's -csi- command can be used. However, to use -csi- it is first necessary to calculate, within each group, the difference between the total number of subjects and the number of events. This is because -csi- expects the data to be entered as individual cell counts rather than "events" and "total subjects”. -csti- allows you to enter the n/N naturally and avoids having to compute the difference between the total subjects and number of events. The command is implemented as a wrapper for -csi- built-into Stata. For example, if 23/130 patients died in an Intervention group while 13/127 patients died in a control group, Stata's -csi- syntax would be "csi 23 13 107 114”, whereas when using -csti-, the command becomes "csti 23 130 13 127”.

Language: Stata
Requires: Stata version 11
Keywords: csi; risk ratio; relative risk (search for similar items in EconPapers)
Date: 2014-09-21, Revised 2014-10-04
Note: This module should be installed from within Stata by typing "ssc install csti". 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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http://fmwww.bc.edu/repec/bocode/c/csti.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/c/csti.sthlp help file (text/plain)

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