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Re: st: separation of nonresponders from occasional responders in repeated survey administration


From   "Jeremy Miles" <[email protected]>
To   [email protected]
Subject   Re: st: separation of nonresponders from occasional responders in repeated survey administration
Date   Fri, 13 Apr 2007 14:13:02 -0700

What does var represent?  Are your data currently arranged tall, or wide?

(It's preferable not to use plain text on the list).

Jeremy



On 13/04/07, [email protected] <[email protected]> wrote:

I am doing an analysis of a monthly survey.  Some of the respondents
answered the dependent variable question every time it was administered,
others answered some of the months and others never answered.  I would like
to compare the group that answered the question at least once with the group
that never answered.

If I use the syntax:
drop if var==q.
 I am left with all of the unique IDs who answered the question at least
once.

If i use the syntax:
keep if var==q.
I get all of the unique IDs who never answered and those that occasionally
answered.

How can I get the group that never answered without the group of occasional
responders "leaking into" the group?

Thank you,
Karen Dunn Lopez, RN, PhD(c)
The University of Iowa
College of Nursing
[email protected]


--
Jeremy Miles
Learning statistics blog: www.jeremymiles.co.uk/learningstats
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