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From |
Benson Limann <benli2@live.com> |

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

Subject |
st: How to detect the change of i over t? |

Date |
Sat, 7 Feb 2009 21:46:46 -0700 |

Hi all: I am using an unbalanced panel dataset. i is ID and t is time. Every (i,t) has a characteristic x=0 or 1. I want to generate a variable called "become" such that for each (i,t): become=1, if x=0 at time t-1, and x=1 at time t become=0, otherwise How to write it? My primary concern is how to deal with the first t for each i--this observation does not have t-1. Any suggestion would be greatly appreciated. Ben _________________________________________________________________ Windows Live™: E-mail. Chat. Share. Get more ways to connect. http://windowslive.com/howitworks?ocid=TXT_TAGLM_WL_t2_allup_howitworks_022009 * * 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**:**st: Re: How to detect the change of i over t?***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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