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drop a variable

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drop a variable

Hello. I am doing an assignment in which I am supposed to extract and download CPS data from IPUMS site 

(https://cps.ipums.org/cps-action/variables/group). The variables in the data set are as follows:

 

 

Person Record

Core Demographic Variables

AGE Age

SEX Gender

RACE Race

MARST Marital status

Ethnicity/Nativity Variables

NATIVITY Foreign birthplace or parentage

HISPAN Hispanic origin

Education Variables

EDUC99 Educational attainment, 1990 categories

Work Variables

WKSWORK1 Weeks worked last year

UHRSWORK Usual hours worked per week last year
UNION Union status
PTWEEKS Weeks working part time last year

Income Variables

 INCWAGE Wage and salary income

 

I am having trouble executing a few steps that are required in the assignment. For example, it says to "drop observations for all non-wage earners." What would the code look like in order to do that? 

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‎04-18-2016 05:25 PM
Super User
Posts: 5,083

Re: drop a variable

SAS uses an IF statement to remove observations.  You could add either of these at the end of your DATA step (and possibly other similar statements):

 

if wkswork1 > 0;

if incwage > 0;

 

It's up to you to decide which variables to use, and what conditions will select the proper observations.

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‎04-18-2016 05:25 PM
Super User
Posts: 5,083

Re: drop a variable

SAS uses an IF statement to remove observations.  You could add either of these at the end of your DATA step (and possibly other similar statements):

 

if wkswork1 > 0;

if incwage > 0;

 

It's up to you to decide which variables to use, and what conditions will select the proper observations.

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