Economics Stack Exchange Archive

How do I calculate a firm’s age in panel data in STATA?

• posted by: Barba Sol on 2012-03-15
• tagged: stata
• score: -1

I have a bunch of firms and the date they were started, but don’t know the exact code to give me the age of each firm. Can anyone help?

Answer 1122

• posted by: John on 2012-03-15
• score: 1

First get the start date into a STATA date variable, then use this and c(current_date) to get the firm’s age.

See “Computations with elapsed dates” at http://www.ats.ucla.edu/stat/stata/modules/dates.htm, and http://www.stata.com/support/faqs/data/dateandtime.html.

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