Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Erik Aadland <[email protected]> |

To |
<[email protected]> |

Subject |
st: creating variable summarizing for each individual properties of other members of a group at t-1 |

Date |
Tue, 17 May 2011 14:09:07 +0000 |

Dear statalist. I need to create a variable that sums for each individual in my dataset the total number of ind_entry of all other individuals at time: yearmonth - 1. I have attached a small ex of my data structure below. So for instance, given the small dataset below, for ind_id 2 in yearmonth 11 this variable score = 1. But for ind_id 4 in the same yearmonth, the score = 0. I would also like to generate a variable that identifies for each individual the unique number of other individuals in the dataset that have experienced ind_entry = 1 at least once up until time: yearmonth - 1. I am familiar with the following FAQ: http://www.stata.com/support/faqs/data/members.html My data structure is snapshot data in principle like the example below, but some individuals enter the observation window later than others (i.e. in later yearmonths): year month yearmonth ind_id ind_entry 2003 10 10 2 0 2003 11 11 2 0 2003 12 12 2 0 2004 1 13 2 0 2004 2 14 2 1 2004 3 15 2 0 2003 10 10 4 1 2003 11 11 4 0 2003 12 12 4 1 2004 1 13 4 0 2004 2 14 4 0 2004 3 15 4 0 Any and all input is very welcome. Kind regards and all the best. Erik Aadland. * * 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**:

- Prev by Date:
**Re: st: mi impute: ologit, mlogit, logit in one equation?** - Next by Date:
**Re: st: mi impute: ologit, mlogit, logit in one equation?** - Previous by thread:
**st: mi impute: ologit, mlogit, logit in one equation?** - Next by thread:
**st: RE: creating variable summarizing for each individual properties of other members of a group at t-1** - Index(es):