How to use if expression in Stata and whats for

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Posted by: admin 11 months, 1 week ago

So let me tell you some story.

You need to labeling the data that you are working on, or you need to create a dataset where you want to label things, and you dont know how to do it! It means you need an if expression. The power of if expression is you can exclude the file that you dont want to add! And thats the magic of labeling, the only make you work with the data that is relevant for you.

As I promise in the video that I will give you the link so here is the link and also the command in Stata for the video above.

Download the data first

use http://www.stata-press.com/data/imeus/census2c, clear

list, sep(0)

describe

Practice in generating a new column / variable

generate urbanized = popurb/pop

summarize urbanized

For example we want to generate variable name urbanized

replace urbanized = 100*urbanized

How to use the

1. If expression in range

So if expression can be used in a range. For example hre you want to exclude any small number of popultion. So if can be used to exclude them.

if expression

to create popularion

generate medagel = medage if pop > 5000

sort state

list state region medagel, sep(0)

using

2. if exp in with indicator boolean

So if you want to make sure that the group is correct. It can work as true false. Here is the example

generate smallpop = 0

replace smallpop = 1 if pop <= 5000

generate largepop = 0

replace largepop = 1 if pop > 5000

list state pop small pop largepop, sep(0

3. Using if exp by varlist

So if you want to use the boolean with the varlist like, number of variable

summarize medage marr divr if region==1 cl

About Me

Hi, my name is Dimas; I am a data enthusiast. I am writing several chapters related to Big Data, the macroprudential policy effect on the economy, and some economic and IT research. If you are interested in collaborating, please write your email to [email protected]

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