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

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

Subject |
RE: st: RE: generating year for a given age |

Date |
Tue, 4 May 2010 23:45:37 +0200 |

<> Sorry, but what is the bottom line now? Reversed or not reversed? HTH Martin -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Debs Majumdar Sent: Dienstag, 4. Mai 2010 23:43 To: statalist@hsphsun2.harvard.edu Subject: Re: st: RE: generating year for a given age My mistake. I just wrote down what the data manager told me. I should have looked into the dataset before I answered Martin's question. debs ----- Original Message ---- From: Martin Weiss <martin.weiss1@gmx.de> To: statalist@hsphsun2.harvard.edu Sent: Tue, May 4, 2010 2:29:37 PM Subject: RE: st: RE: generating year for a given age <> " I don't think characters are reversed--see obs 4 in the original output:" This observation prompted me to ask Debs, and he should know. I thought he put the "1" in there erroneously, but I may be wrong. If so, Debs should say so. HTH Martin -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Austin Nichols Sent: Dienstag, 4. Mai 2010 23:26 To: statalist@hsphsun2.harvard.edu Subject: Re: st: RE: generating year for a given age Debs Majumdar <debs_stata@yahoo.com> : I don't think characters are reversed--see obs 4 in the original output: clear all inp byte id str13 dateint age_bl 1 "7242003" 81.00753 2 "6132003" 89.99042 3 "4222004" 84.70363 4 "10192005" 71.01163 5 "9042003" 65.36345 end qui compress qui destring, replace g inty=dateint-1e4*floor(dateint/1e4) g intm=floor(dateint/1e6) g intd=floor(dateint/1e4)-intm*100 gen d=mdy(intm,intd,inty) format d %tdMon_DD,_CCYY gen birthday=d-age_bl*365 format birthday %td gen yearwhenforty=yofd(birthday+40*365.25) l On Tue, May 4, 2010 at 5:18 PM, Debs Majumdar <debs_stata@yahoo.com> wrote: > Thanks. And I am going to look into the date_and_times just to be thorough when generating then new variables. Yes, you are correct about the reverse characters. > > Debs > > > > ----- Original Message ---- > From: Martin Weiss <martin.weiss1@gmx.de> > To: statalist@hsphsun2.harvard.edu > Sent: Tue, May 4, 2010 1:56:22 PM > Subject: st: RE: generating year for a given age > > > <> > > This is a cheap first shot. You want to dig deeper into -help > dates_and_times- to get all the leap years and stuff into this. Am I correct > that your "dateint" has the first two characters reversed? > > *********** > clear* > > inp byte id str13 dateint age_bl > 1 "7242003" 81.00753 > 2 "6132003" 89.99042 > 3 "4222004" 84.70363 > 4 "1092005" 71.01163 > 5 "9042003" 65.36345 > end > > compress > list, noo > > gen str15 newdate= /* > */ reverse(substr(dateint,1,2))+ " " + /* > */ substr(dateint,3,1)+ " " +substr(dateint,4,.) > gen mydate=date(newdate, "DMY") > form mydate %tdMon_DD,_CCYY > drop dateint newdate > > gen birthday=mydate-age_bl*365 > format birthday %td > gen yearwhenforty=yofd(birthday+40*365) > l > *********** > > > HTH > Martin > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Debs Majumdar > Sent: Dienstag, 4. Mai 2010 22:38 > To: statalist@hsphsun2.harvard.edu > Subject: st: generating year for a given age > > Hi, > > I have a dataset where I have the date of interview and the > corresponding age at that time (age_bl). I want to create two variables of > of this: 1) date of birth and 2) year when age was 40 for the participants. > > | id dateint age_bl | > |--------------------------------------| > 1. | 1 7242003 81.00753 | > 2. | 2 6132003 89.99042 | > 3. | 3 4222004 84.70363 | > 4. | 4 10192005 71.01163 | > 5. | 5 9042003 65.36345 | > +-------------------------------------+ > > > How would I do that? > > Thanks, > > Debs > * * 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/ * * 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: st: RE: generating year for a given age***From:*Debs Majumdar <debs_stata@yahoo.com>

**References**:**st: generating year for a given age***From:*Debs Majumdar <debs_stata@yahoo.com>

**Re: st: RE: generating year for a given age***From:*Debs Majumdar <debs_stata@yahoo.com>

**Re: st: RE: generating year for a given age***From:*Austin Nichols <austinnichols@gmail.com>

**RE: st: RE: generating year for a given age***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**Re: st: RE: generating year for a given age***From:*Debs Majumdar <debs_stata@yahoo.com>

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