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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

To |
<statalist@hsphsun2.harvard.edu> |

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

Date |
Mon, 2 Mar 2009 17:22:00 +0100 |

<> English is not my mother tongue, so I do not know what to make of this "faux" (neither does my dictionary). Ekaterina`s dataset in her initial post was not legible to me so I tried to emulate it. I cannot vouch for correctness or whether I understood the poster`s intent entirely. Replies should always be in reference to the original post, not to what someone made of it... HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Jeph Herrin Gesendet: Montag, 2. März 2009 17:13 An: statalist@hsphsun2.harvard.edu Betreff: Re: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables? Well, on inspection, I see that her data have multiple tags per record, so that 1s are filled to the right after the first (left to right) 1; I was misled by Martin's faux dataset. Her stated logic would then require: gen min=mininc1*500+(mininc2-mininc1)*1000+(mininc3-mininc2)*1500 Pending clarificaiton from Ekaterina about the _real_ structure of her data.. Jeph Nick Cox wrote: > Good! > > I didn't spell out that I feared that there are yet other variables in > what might be Ekaterina's _real_ problem, lurking behind her stated > problem, making a more general approach attractive too. > > Nick > n.j.cox@durham.ac.uk > > Jeph Herrin > > Briefer yet: > > gen min=mininc1*500+mininc2*1000+mininc3*1500 > > which also traps the missings Nick cautions about. > > 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? > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: AW: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Ekaterina Hertog <ekaterina.hertog@sociology.ox.ac.uk>

**Re: AW: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Jeph Herrin <junk@spandrel.net>

**References**:**st: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Ekaterina Hertog <ekaterina.hertog@sociology.ox.ac.uk>

**st: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**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>

**Re: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Jeph Herrin <junk@spandrel.net>

**RE: 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>

**Re: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Jeph Herrin <junk@spandrel.net>

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