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From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: RE: calculating proportions |
Date | Mon, 20 Feb 2012 23:46:14 +0000 |
I don't see a precise question here. The fraction earning 500 exactly has no direct relation to the associated relative rank. I recommend that you use a simpler example and draw graphs to see what is going on. Nick On Mon, Feb 20, 2012 at 11:29 PM, Ekaterina Hertog <ekaterina.hertog@sociology.ox.ac.uk> wrote: > Hi Nick, > thank you for the advice. i looked at all the 3 packages you recommended and > thought that relrank could do what I want, but having run it I realise that > I am not sure how rank was calculated. > I used the following code: > relrank income if sex==1, ref(income if sex==2) g(rank) > > My dataset contains 4132 women. 268 of them have income=0. That means that > in case of a man whose income is 0(zero) 6.48% of women earn as little as he > does. My new variable rank takes the value 0.0648 in this case, seemingly > corresponding to the 6.48% of women whose income equals 0. However, if I > look at different income level (say 500). 6% of all women earn 500, but the > value of rank in this case is 0.93. I have looked at the help file, but am > still no quite clear what is going on. > Ekaterina > > > On 20/02/2012 12:19, Nick Cox wrote: >> >> Look at these modules on SSC: >> >> relrank (Ben Jann) >> invcdf (Ben Jann) >> ppplot (Nick Cox) >> >> Nick >> n.j.cox@durham.ac.uk >> >> Ekaterina Hertog >> >> I use Stata 12. I have a dataset which includes id number, sex and >> income information for every individual. I would like to construct for >> every man 3 variables: what is the proportion of the total female >> population that earns as much as he does, that earns less than he does, >> and that earns more than he does. I have tried creating a table which >> gives me frequencies of individuals by sex by income, but am getting >> stuck at that stage. * * 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/