Date: Wed, 28 May 2003 11:03:50 +1000
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Paul Dickson <firstname.lastname@example.org>
Subject: combining do if and end if
> The following is a question I would like some help with. I have got
> this far because I am new to syntax and I am happy that at least the syntax
framework is running without a billion error messages appearing.
> My goal is to examine repeated measures (longitudinal data) and I
> have 4
> variables that are recorded 4 times. The first set of 4 variables is
> the baseline and the remaining 3*4 sets of variables are scores that are to be
> compared against this baseline. I want to test whether a person improved or
> declined (by definition no improvement is that their scores are within a 95%
confidence interval of the baseline mean over each stage of the trial) while below
this value represents decline and above this value represents improvement.
> The variables are to be coded 1 (improvement) -1 (decline) and 0 as (no
>The outcome is that there will be twelve new variables created and these
variables will reflect this computation in terms of 1, -1, 0.
So far this is how the syntax looks with written text where I can't construct the write
do repeat a = domain1b to domain4d.
> compute goodtim1 = (domain1b).
> compute goodtim2 = (domain2b).
> compute goodtim3 = (domain3b).
compute goodtim4 = (domain4b).
> do if (a falls between CINTERVAL 95) -the first problem is how to write this!!!
> compute a = 0.
> else if (a falls below the CI) this is the second problem.
> compute paul = -1.
> else if (a falls above the confidence interval).
> compute paul = 1.
> else if (sysmiss(a) or a = 9).
> compute paul = 9.
> end if.
> end repeat.
As you can probably appreciate by looking at the syntax I am getting only one
variable called Paul and I want to get twelve variables for Paul1 to Paul12.
Thanks in advance