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

 From Jeph Herrin To statalist@hsphsun2.harvard.edu Subject Re: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables? Date Mon, 02 Mar 2009 10:43:27 -0500

Briefer yet:

gen min=mininc1*500+mininc2*1000+mininc3*1500

which also traps the missings Nick cautions about.

hth,
Jeph

Nick Cox wrote:
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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