This module compares the counts of a binary outcome under two different treatments, with statistics that are in common use in medicine. The data are entered in a 2x2 table, with treatments in rows and counts of the two different outcomes in columns.

The following example shows the results of a vaccination trial on 460 patients:


  Got influenza Did not get influenza
Vaccine 20 220
Placebo 80 140

In general, the data take the form


  Outcome 1 Outcome 2
Treatment 1 d1 h1
Treatment 2 d0 h0

For mathematical details, see the Past manual.

Note there is currently no continuity correction.

Missing data are not allowed and will give an error message.

Published Aug. 31, 2020 9:34 PM - Last modified Aug. 31, 2020 9:34 PM