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From |
Nick Cox <njcoxstata@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Database problem |

Date |
Fri, 7 Dec 2012 19:22:55 +0000 |

If I understand this correctly, I would change the structure of the data so that you have (in -reshape- terms, a -long- not -wide- structure). Even after reversal, this is going to be very awkward to work with, so it's better to think of another solution. You probably have some -rename-ing to do first. Nick On Fri, Dec 7, 2012 at 7:16 PM, roland andersson <rolandersson@gmail.com> wrote: > I have data on 3574 unique patients. In the datase there are first 5 > identification variables ,age, sex and so on. Thereafter comes a > nomber of variables representing observations. Each observation has > three columns - the sequential number of the observation, the content > of the observation and the date. The problem is that these observation > are in reverse order, ie the last observation comes first and the > first observation last in the row. And the number of observations for > each patient range from 1 to 44. Some observations have the same date > so they have the same sequential number. below is the data. Var 7, var > 10 and var 13 are the number of the observation, var 8, 11, and 14 the > observation (the diagnosis or intervention) and var 9, 12 and 15 the > date of the observation. > > I want to reverse the order so that the first observation comes in as > var 7 etc. I also want to merge observations with the same date with a > new combined content. case nr 1 below sholuld thus be 1 > diverticulitsigmo 15930. Is this possible? > > Regards > Roland Andersson > > var7 var8 var9 var10 var11 var12 var13 var14 var15 > 1 diverticulit 15930 1 sigmo 15930 > 1 akutiverticulit 16670 1 sigmo 16670 > 3 akutiverticulit 17126 2 akutiverticulit 16962 1 akutiverticulit 16359 > 2 akutiverticulit 17019 1 akutiverticulit 17019 > 1 akutiverticulit 15831 1 resektion 15831 > 1 akutiverticulit 16129 > 3 ctbuk 16839 2 sigmo 16838 1 akutiverticulit 16532 > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Database problem***From:*Nick Cox <njcoxstata@gmail.com>

**References**:**st: Database problem***From:*roland andersson <rolandersson@gmail.com>

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