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st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?
Date   Sun, 1 Mar 2009 19:32:17 -0000

A variation on the same idea:  

gen min = 500 

foreach v in 1000 1500 2000 { 
	replace min = `v' if mindesinc_`v' == 1 
}

To be careful, check 

egen row = rowtotal(mindesinc*) 
assert row == 1 

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss

*reconstruct Ekaterina`s data
clear*
input id mindesinc_500_999 mindesinc_1000_1499  mindesinc_1500_1999
101 1 0 0 0
102 0 1 0 0
103 0 0 1 0
104 0 0 1 0
105 0 1 0 0
end
*construct the minimum desired income
g mindesinc=500 if mindesinc_500_999
replace mindesinc=1000 if mindesinc_1000_1499
replace mindesinc=1500 if mindesinc_1500_1999
l

Ekaterina Hertog
I am dealing with a dataset from a private company and so my data often 
comes in rather strange format and I now came against the following
problem:
 
I have a set of individuals who answered questions about desired income.

It looks as follows:

Individ nmb | Min desired income 500 - 999 | 1000 - 1499 |  1500 - 2000
|
101             |                      0                        
|         0          |           1          |
102             |                      0                        
|         1          |           1          |
103             |                      0                        
|         0          |           1          |
104             |                      1                        
|         1          |           1          |
105             |                      0                        
|         1          |           1          |

Is there a way to automatically recode these binary minimum desired  
income variables into a numerical variable which would state the minimum

acceptable figure for each individual?
That is some routine which would check "Min desired income 500 - 999" 
and if it equals 1 then would input 500 for the individual in question 
into a newly constructed variable "Minimum acceptable income" and move 
on to the next person and if it equals 0 would look at the value of 
"1000 - 1499" variable and if it equals 1 would input 1000 for that 
person and move on to the next person and if it is 0 would look at "1500

- 2000" variable?

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