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st: 回复: st: re: missing string entry
From
lydia huang <[email protected]>
To
[email protected]
Subject
st: 回复: st: re: missing string entry
Date
Tue, 9 Mar 2010 11:46:25 +0800 (CST)
i typed
replace nosocomial_infection = "NULL" if mi(nosocomial_infection)
and it says "unknown function mi()".
what does this mean? how solve it? I want to change all the missing string variables into "null", do i type the following?
replace _all = "NULL" if mi(_all)
Best wishes
Lydia
--- 10年3月9日,周二, Kit Baum <[email protected]> 写道:
> 发件人: Kit Baum <[email protected]>
> 主题: st: re: missing string entry
> 收件人: [email protected]
> 日期: 2010年3月9日,周二,上午10:36
> <>
> How to convert all the missing string entry into entry
> shows "null"?
>
> replace myvar = "NULL" if mi(myvar)
>
> Kit Baum | Boston College
> Economics & DIW
> Berlin | http://ideas.repec.org/e/pba1.html
>
> An
> Introduction to Stata Programming
> | http://www.stata-press.com/books/isp.html
> An Introduction to Modern Econometrics
> Using Stata | http://www.stata-press.com/books/imeus.html
>
>
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