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st: update to ralloc

From   Philip Ryan <>
Subject   st: update to ralloc
Date   Mon, 08 Oct 2007 09:27:19 +0930


Thanks, as ever, to Kit Baum, there is an update of my program -ralloc- on the SSC server. -ralloc- allocates treatments
in a randomized controlled trial.

The latest version (3.4.3, dated 2007-10-07) contains the following enhancements:

1. support for 4x4 two-way factorial designs (previously 3x4 or 4x3 designs were the highest levels for a two-way factorial design)

2. support for 2x2x2, 2x2x3, 2x3x3 and 3x3x3 three-way factorial designs

3. up to 10 (was 5) treatments may be specified in a one-way design

4. extra examples in the help file showing how to assign treatments in designs with more complicated allocation ratios than
permitted by the basic ratio() option.

5. minor fixes, nothing that touched the basic randomizing code.

-ssc describe ralloc- or -ssc install ralloc- will get you there.

bug notifications dreaded but gratefully received.


Philip Ryan
Professor and Director, Data Management & Analysis Centre
Discipline of Public Health
Mail Drop 511
University of Adelaide 5005
South Australia

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