st: Survival Analysis for Panel Data

[ajjee <ajjee1@yahoo.com>]

Dear All

I have a panel dataset in the form

Firm   	year		id		id2	     event	time_elapsed
1		1980		1		1		1		0
1		1981		2		2		1		0
1		1982		2		2		0		1
1		1983		3		3		1		0
1		1984		3		3		0		1
1		1985		4		4		1		0
1		1986		4		4		0		1
1		1987		4		4		0		2
1		1988		4		4		0		3
1		1989		5		5		1		0
1		1990		5		5		0		1
2		1980		6		1		1		0
2		1981		6		1		1		1
2		1982		6		1		0		2
2		1983		6		1		0		3
2		1984		6		1		0		4
2		1985		6		1		0		5
2		1986		6		1		0		6
2		1987		7		2		1		0
2		1988		7		2		0		1
2		1989		7		2		0		2
2		1990		7		2		0		3

here id: overall id in the dataset
      id2: id by the firm
I'm interested when the event took place that is event==1. event is removal
of CEO. 

But I don't know how to set the data for survival analysis as it has firm
and id both. Should I use id or id2?

ajjee





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