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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Database problem |

Date |
Sat, 8 Dec 2012 12:35:26 +0000 |

It sounds as if you need something like this rename var1 id rename var2 age rename var3 sex rename var4 foo rename var5 bar rename var6 frog local max "<index of highest number variable>" local i = 1 foreach j = 7(3)`max' { rename var`j' number`i' local J = `j' + 1 rename var`J' diagnosis`i' local J = `J' + 1 rename var`J' date`i' local ++i } gen long obsno = _n reshape long id age sex foo bar frog number date diagnosis , i(obsno) The loop isn't necessary, just convenient! Some commands can be shortened in Stata 12. (See -help rename groups-.) 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/

**Follow-Ups**:**Re: st: Database problem***From:*roland andersson <rolandersson@gmail.com>

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

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