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From | Kay Walker <kay.walker@internode.on.net> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Merge Append which one |
Date | Sat, 06 Nov 2010 16:15:36 +1030 |
Hi Nirina Re: "data in fifteen separate files" etc 1. First create a single file for each country using Merge (combining household, district and village data); then create the variable "Country"in each of these merged data files. 2. "how do I give a prefix to all the variables for each country to say fr, en, us (to france, england and USA)?" I would not bother to alter all the variables as later you would want them to be combined again for further analysis. I would create a classification column in ALL the single country files named "Country". Make all the country names available as categories,so the variable is "Country" and the choices would be "USA", "Fr", "UK" etc. 3. Finally, when you have checked that ALL the variable names in each country are identical, you can APPEND the countries together. Then you should be able to perform various analyses using REGRESSION etc to discover any differences/similarities across countries at the different levels of Village, District etc. If you have the same Variable names in the Village, District etc data files, you might also need to create a categorical variable such as "Level" with categories Village, District etc, to unite them before Merging into the single Country files. It is difficult to say without seeing your data file layout. Cheers * * 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/