[R] Rank Simulations - Test statistic Help

[Hanke, Alex]

Dear S,
Try rephrasing your question instead of altering the subject line. I can see
why you haven't any takers.
Alex

-----Original Message-----
From: S P [mailto:poolloopus at yahoo.com] 
Sent: March 10, 2004 9:59 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Rank Simulations - Test statistic Help


Hi all,

I am a biostatistician and I have developed my own
ranking system for clinical data. I would like to test
the efficiency of it w.r.t. to other ranking systems.
I would like to simulate the data and after assigning
ranks to my observed scores(after neglecting
dropouts), observe the type I error. If I want to do a
Kruuskal Wallis type of test, what test statistic
should I use to test for a difference of "delta"
between the two groups (I know "delta" since the data
is generated with that difference). The default K-W
test statistics test for a NULL difference and I want
to see how frequently my ranking system rejects the
correct null hypothesis of a "delta" difference.

(So my data is now in 2 arrays of unequal lengths due
to dropouts, which have the ranks for drug and
placebo.)

Thank you in advance for your help.

~S

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