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From |
Nick Cox <n.j.cox@durham.ac.uk> |

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

Subject |
st: RE: using hierarchical data of household and persons, need to copy some variables from parents observations and append to children |

Date |
Tue, 14 Dec 2010 10:15:57 +0000 |

In addition to the suggestions of Maarten Buis, note that this is an FAQ: FAQ . . Creating variables recording prop. of the other members of a group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox 4/05 How do I create variables summarizing for each individual properties of the other members of a group? http://www.stata.com/support/faqs/data/members.html Nick n.j.cox@durham.ac.uk hilary ligon I have a household travel survey with 3 levels of data. I have households, persons, and trips. All members of a household share a household identifier "sampn" such as 20010. Then each person in the household is identified with the sampn and a 01, 02, 03, etc. So, the first person in the family is 2001001. Finally, the trips for each person are identified by adding another 01, 02, 03, 04 for trips to the end of the person identifier. The first trip of the first person in household 20010 would be 200100101. I have each level of data in a separate .dta and I have a master file in which I have merged all levels of data together. I can also merge just households and persons and make modifications to that prior to adding in trip data. I am looking at effects of parent's work flexibility on children's travel. So, my regression model and the dataset will only include the children. But, I want to include characteristics about the parents. I want to write some code that will copy the variable for work flexibility from the parent (person 01) and append it to the observation for the children (e.g. person 03 and person 04). I want to do this for each household. Not all households have children, so I need to be able to check if there are children. If so, then I need to copy parent information to end of child record. Some households have one parent and some have two. Some houses also have grandparents, older siblings, etc so I can't assume there are the only 2 adults per family's household. Can anyone help me get the data on parents appended to the data on their children? This is a very large dataset and doing it manually is not practical. * * 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: using hierarchical data of household and persons, need to copy some variables from parents observations and append to children***From:*hilary ligon <hal8@georgetown.edu>

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