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From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Calculate number of alive male and female children from a family dataset |

Date |
Mon, 31 May 2010 14:59:53 -0400 |

I should add that I started writing my code before I saw Martin's much more compact version, which I recommend. To get prior totals, modify his code by adding the statements: replace alivmale = alivmale-1 if !myindicator & chsex==1 replace alivfemale = alivfemale-1 if !myindicator & chsex==2 Also, in my post, the first input line " 1 1 1 1982 " is missing a "." at the end Steve On Mon, May 31, 2010 at 2:39 PM, Steve Samuels <sjsamuels@gmail.com> wrote: > Anna, In our pregnancy studies, we calculate events prior to each > birth. If that is what you want, the following code should work. > Note that you will have to tweak it for multiple births. > > Steve > > > *******CODE BEGINS**************** > clear > input motherid order sex bornyear deathyear > 1 1 1 1982 > 1 2 1 1985 1994 > 1 3 1 1986 . > 1 4 2 1989 . > 1 5 2 1990 . > 1 6 1 1995 . > end > list > gen m_alive=0 > gen f_alive=0 > gen m_dead=0 > gen f_dead=0 > gen m_prior=0 > gen f_prior=0 > gen year = bornyear > > expand 2 if deathyear !=., gen(status) > bysort motherid (year): replace year =deathyear if deathyear!=. & status==1 > ** MALES > bysort motherid (year): replace m_dead= sum(sex==1 & status==1) > bysort motherid (year): replace m_prior = sum(sex==1 & status==0) > replace m_prior = m_prior -1 if status==0 & sex==1 > replace m_alive = m_prior - m_dead > > ** FEMALES > bysort motherid (year): replace f_dead= sum(sex==2 & status==1) > bysort motherid (year): replace f_prior = sum(sex==2 & status==0) > replace f_prior = f_prior -1 if status==0 & sex==2 > replace f_alive = f_prior - f_dead > drop if status==1 > list motherid order sex bornyear m_alive m_dead f_alive f_dead > ***********CODE ENDS**************************************************** > > > On Sun, May 30, 2010 at 1:12 PM, Martin Weiss <martin.weiss1@gmx.de> wrote: >> >> <> >> >> Extension of this code to several mothers will require use of -bysort-, btw: >> >> >> *********** >> clear* >> set obs 6 >> *Mother's id >> gen byte motherid=1 >> >> *Birth order >> gen byte birth=_n >> >> *child's sex >> gen byte chsex=1+inlist(_n,4,5) >> >> label define chsex 1 male 2 female >> label values chsex chsex >> >> *born year >> gen int bornyear=1982 >> replace bornyear=1985 in 2 >> replace bornyear=1986 in 3 >> replace bornyear=1989 in 4 >> replace bornyear=1990 in 5 >> replace bornyear=1995 in 6 >> >> *death year >> gen deathyear=1994 in 2 >> >> expand 2 if !mi(deathyear), gen(myindicator) >> gen year=cond(myindicator, deathyear, bornyear) >> la def myvals 0 "birth" 1 "death" >> la val myindicator myvals >> sort year >> >> gen deadmale=sum((chsex==1)*myindicator) >> gen deadfemale=sum((chsex==2)*myindicator) >> gen alivmale=sum((chsex==1)*!myindicator)-deadmale >> gen alivfemale=sum((chsex==2)*!myindicator)-deadfemale >> drop if myindicator >> drop myindicator year >> sort birth >> >> >> list, noo sepby(chsex) >> *********** >> >> >> HTH >> Martin >> >> -----Original Message----- >> From: owner-statalist@hsphsun2.harvard.edu >> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Anna Reimondos >> Sent: Sonntag, 30. Mai 2010 11:44 >> To: statalist@hsphsun2.harvard.edu >> Subject: st: Calculate number of alive male and female children from a >> family dataset >> >> Hello statalisters, >> I have a dataset which had the complete birth histories of a survey of >> women. The data is in 'long' format so that each woman has one >> observations for each child she has had. The information I want to >> work with is the child's date of birth, date of death (if applicable) >> and sex. From this I would like to calculate at the time of each >> birth, how many alive male children the woman had, how many alive >> female children, how many dead male children and how many dead female >> children. That is the part I am having trouble with. >> >> Here is a quick example of one hypothetical womans history: >> This woman has had 6 births (4 males, and 2 females - where sex=1 is >> male and sex=2 is female) >> All the children were still alive at the time of the survey except for >> the second birth. That child died in 1994. >> Based on this information I want to fill in the variables alivmale >> (number of male children alive at the time of the birth of child X), >> alivfem, deadmale and deadfem. >> For example at the time of the birth of the 6th child the woman had >> had 2 male children, 2 female children and the 1 male child that had >> died. >> >> motherid Birth sex bornyear deathyear alivmale alivfem >> deadmale deadfem >> 1 1 1 1982 0 >> 0 0 0 >> 1 2 1 1985 1994 1 >> 0 0 0 >> 1 3 1 1986 2 >> 0 0 0 >> 1 4 2 1989 3 >> 0 0 0 >> 1 5 2 1990 3 >> 1 0 0 >> 1 6 1 1995 2 >> 2 1 0 >> >> >> >> I can't seem to get it right. >> I thought it would be a fun problem to get into, but after struggling >> now for quite a long time it is not so fun anymore. >> I hope someone will be able to see a solution.... >> Thanks >> Anna >> >> P.S I have written the code to produce this dataset in STATA as well >> if that helps. >> >> set obs 6 >> *Mother's id >> gen motherid=1 >> >> *Birth order >> gen birth=. >> forvalues n=1/6 { >> replace birth=`n' in `n'/`n' >> } >> >> *child's sex >> gen chsex=1 in 1/3 >> replace chsex=2 in 4/5 >> replace chsex=1 in 6/6 >> >> label define chsex 1 male 2 female >> label values chsex chsex >> >> >> *born year >> gen bornyear=. >> replace bornyear=1982 in 1/1 >> replace bornyear=1985 in 2/2 >> replace bornyear=1986 in 3/3 >> replace bornyear=1989 in 4/4 >> replace bornyear=1990 in 5/5 >> replace bornyear=1995 in 6/6 >> >> *death year >> gen deathyear=. >> replace deathyear=1994 in 2/2 >> * >> * 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/ >> > > > > -- > Steven Samuels > sjsamuels@gmail.com > 18 Cantine's Island > Saugerties NY 12477 > USA > Voice: 845-246-0774 > Fax: 206-202-4783 > -- Steven Samuels sjsamuels@gmail.com 18 Cantine's Island Saugerties NY 12477 USA Voice: 845-246-0774 Fax: 206-202-4783 * * 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/

**References**:**st: Calculate number of alive male and female children from a family dataset***From:*Anna Reimondos <areimondos@gmail.com>

**Re: st: RE: Calculate number of alive male and female children from a family dataset***From:*Steve Samuels <sjsamuels@gmail.com>

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