Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: data management help

From   mnitkin <>
Subject   st: data management help
Date   Mon, 04 Oct 2004 00:09:45 -0400

I have a data set with 131,000 firm observations over 14 years. Individual firms may be in the data set between 1 and 14 times. I want to keep only those firms that have observations for the entire 14 year period.

I've tried all the tricks I know as well as a number of suggestions on the stata website, but I haven't had any luck.

thanks for the help,
Mindy Nitkin

* For searches and help try:

© Copyright 1996–2015 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index