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From |
Gwinyai Masukume <parturitions@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth? |

Date |
Mon, 11 Mar 2013 06:10:14 +0200 |

hi. lets say I wanted to have more people born during a certain specific time period rather than having people born at generally uniform rates during the entire time period (drawing from a uniform distribution): *version 12 scalar start = mdy(1,1,1964) scalar end = mdy(12,31,1998) gen date_of_birth = int(start+(end-start)*runiform()) say I wanted the majority of my synthetic cohort (1964-1998) to be born between 1983 and 1993 with peak births in 1986. essentially a negatively skewed distribution I suspect. a beta distribution appears to be able to give the desired pattern of births I’m after? how would one implement such a scenario of having more births during a specific time period? thanks for your consideration G On 3/11/13, Gwinyai Masukume <parturitions@gmail.com> wrote: > Rebecca > > Thanks again. Apologies, I didn’t mean to say I obtained the exact > same results – I meant to say that one still obtains pseudo-random > dates by omitting that particular code (without setting the seed). > > (My understanding is that Stata uses a pseudo-random number generator > which can pass for a true random number generator – but I digress). > > Thank you Rebecca for your help. > Kind regards, > G. > * * 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/

**References**:**st: how does one automatically calculate the age in years by subtracting the system date from the date of birth?***From:*Gwinyai Masukume <parturitions@gmail.com>

**Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth?***From:*Rebecca Pope <rebecca.a.pope@gmail.com>

**Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth?***From:*Gwinyai Masukume <parturitions@gmail.com>

*From:*Rebecca Pope <rebecca.a.pope@gmail.com>

*From:*Gwinyai Masukume <parturitions@gmail.com>

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