Caution! This message was sent from outside the University of Manitoba.

Bonjour mon ami,

If you are typing a command directly, then everything must be on one line:

select sexe<>”Inconnu” do freq sexe;

The command interpreter always adds a semicolon at the end of a line, so if you try to do this in two lines it becomes

select sexe<>”Inconnu” do;

Which does nothing after the select.

In a program, you can write this on two lines.

Here is the help for select, which should be in the next release. Jamie Select records

select (<condition>) do <command> select (<condition>) do begin <command block> end;

Select a subset of records for the subsequent command or command block. The selection only has effect for this commands or commands. Unlike in classic EpiData, the selection is not retained.

parameters

* condition can be any logical condition that compares individual data values * command may be any command that operates on data except for save * command block is a group of commands, each of which must end with a semicolon, as in any program

example

// get the epicurve for children under 18 select (age < 18) do epicurve onsetdate; // get mean age and a food-specific attack rate table for men only select (gender="M") do begin means age; ctable ill food1-food5 !ar; end;

On Feb 1, 2026, at 6:48 PM, EpiData support and user community epidata-list@lists.umanitoba.ca wrote:

I need to understand how to use the select command in EpiData Analysis 3.3.0.0 r617; I tried the following:

.select Sexe<>"Inconnu" do;

Selecting, please wait... (25951 of 26097 selected)

Then:

.freq Sexe;

Sexe ──────────────── N ──────────────── Féminin 11973 Inconnu 146 Masculin 13978 ──────────────── Total 26097 ────────────────

The selection doesn’t apply to the database, even if the previous message said so; it’s unfortunate because further analysis of the data should apply to the selected records. I didn’t find explanations about select in the help file (how to apply it and how to cancel it); do you have some answers about this? Cordialement, Réjean