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st: Query

From   [email protected]
To   [email protected]
Subject   st: Query
Date   Mon, 31 Jan 2005 12:27:34 -0500

I am working with a multi-record-per-case observational data set and have a problem. Specifically, it turns out that within cases, duration times for single records can span more than one year. Accordingly time-varying explanatory variables that carry different information by year are not accurate for that record. For example,
ID Entry Exit pwom
4 01/14/82 07/08/86 50.2
4 07/08/86 12/31/86 52.6
4 01/01/87 04/30/87 57.5
As you see, pwom varies for records 2 and 3 but not so for record 1, which covers a period of nearly 4 yrs but nonetheless carries a constant value for pwom. I cannot not locate a procedure in Stata for splitting record 1. Any suggestions would be greatly appreciated. Thanks.

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