<color><param>0100,0100,0100</param>Hi,

I'm trying to write macro to perform crosstabulations of and non-par difference tests between a series of pairs of items.

e.g.

time 1 measurements; x1 y1 z1,

time 2 measurements; x2 y2 z2

So far I've written the following macro which works for a single pair of items:

DEFINE !USECHA1 (TIME1 !TOKENS(1) / TIME2 !TOKENS(1))

crosstabs !TIME1 by !TIME2 /cells = count row col /stats = chisq.

NPAR TEST /WILCOXON=!TIME1 with !TIME2 (PAIRED) /SIGN= !TIME1 with !TIME2 (PAIRED) /MISSING ANALYSIS.

!ENDDEFINE.

However I'd like to extend this so that I can put lists of time 1 and time 2 items in. I've got as far as

DEFINE !USECHA3 ( TIME1 !CHAREND ('/') / TIME2 !CMDEND ).

crosstabs !TIME1 by !TIME2 /cells = count row col /stats = chisq.

NPAR TEST /WILCOXON=!TIME1 with !TIME2 (PAIRED) /SIGN= !TIME1 with !TIME2 (PAIRED) /MISSING ANALYSIS.

*!ENDDEFINE.

... but the obvious problem with this is the crosstab bit: if I run

usecha3 time1 = x1 y1 z1 / time2 = x2 y2 z2

I end up with crosstabs of x1 by each of x2, y2 and z2, y1 by each of x2, y2 and z2 etc, cos unlike the NPAR test command I can't specify 'pairs' of items for CROSSTABS.

Can anyone see a way I can get this to work in the way I want - I guess the answer lies via looping but I can't get beyond that!

cheers

Chris

<nofill> C.B.Stride@Sheffield.ac.uk

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