Carter Rees wrote:
Is it possible to use and if statement in conjunction with -label- values?
I have a variable testcode with values of 1-90 indicating 90 different
teacher certification tests. Versioncode has values of 1 & 2 which indicate
a specific version of the test used. Subpart has values of 1-7 naming the
different parts of the test for that version in that test. The subpart
titles (and total number) within each version of a test are not always the
same across versions.
I would like to assign different subpart value labels depending on the
versioncode of a test. Below is an example for test 1.
studentid testcode versioncode subpart
22 1 1 1
22 1 1 2
22 1 1 3
22 1 1 4
22 1 1 5
13 1 2 1
13 1 2 2
13 1 2 3
13 1 2 4
------------------------------------------------------------
The relationship between a code and its value label is simple and straightforward, and what you suggest is not possible, if I understand you right.
I understand you this way: The coding of -subpart- is not the same for all values of -versioncode-. Suggestion: create a new variable combining the information in -versioncode- and -subpart-:
gen subpart2 = 10*versioncode + subpart
Next, assign value labels to -subpart2-
Do -subpart- codes also mean different things for different values of -testcode-?The same principle could be applied.
Hope this helps.
Svend
________________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
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