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| From | "PHAM Ngoc Minh" <pham@ri.ncgm.go.jp> |
| To | <statalist@hsphsun2.harvard.edu> |
| Subject | RE: st: intcens: how to estimate mean and variance after intcens |
| Date | Fri, 26 Oct 2012 13:22:05 +0900 |
Dear Stata users, I wish to create dummy variables containing missing (.), and thus used formula COND(IF, THEN, ELSE) but missing (.) no longer existed. An example as follows: I need to generate (wcgrp) from waist circumference (wc) as 1, 0 or missing (.), then typed: generate wcgrp = cond(wc>90&wc!=.&sex==1|wc>80&wc!=.&sex==2, 1, 0) but (wcgrp) had only 1 and 0, and missing was regarded as 0. Then, I tried generate wcgrp = cond(wc>90&wc!=.sex==1|wc>80"wc!=.&sex==2, 1, 0, .), but nothing changed. Are my commands correct? Anyone knows the solution, please give your help. Thank you Ngoc Minh Pham, Research associate National Center for Global Health and Medicine, Japan. pham@ri.ncgm.go.jp * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/