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From |
Svend Juul <SJ@SOCI.AU.DK> |

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

Subject |
Re: st: How to calculate the time elapsed between two transactions |

Date |
Thu, 24 Jul 2008 23:31:20 +0200 |

Bea wrote: I have data about time of transactions and I would like to calculate the difference (i.e. how much time elapsed between two transactions). For example I have a transaction at 09:23:03 and the next at 10:43:53, so the time interval is 1 hour 20 minutes and 50 seconds. Is there a procedure to calculate the difference between a transaction and the next one for the whole sample? ====================================================== If you have Stata 10, read the output from: . help dates and times Prior to Stata 10, there were no official commands handling time (clock) information, but there were some unofficial functions in the -egenmore- package. First: . ssc install egenmore Now you have access to some useful -egen- functions. For your purposes, the -hms()- and -tod()- functions are useful. Hope this helps Svend ________________________________________________________ Svend Juul Institut for Folkesundhed, Afdeling for Epidemiologi (Institute of Public Health, Department of Epidemiology) Vennelyst Boulevard 6 DK-8000 Aarhus C, Denmark Phone, work: +45 8942 6090 Phone, home: +45 8693 7796 Fax: +45 8613 1580 E-mail: sj@soci.au.dk _________________________________________________________ * * 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/

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