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From | Nick Cox <njcoxstata@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Cross Tabulation with more than 2 variables |
Date | Mon, 22 Aug 2011 12:55:20 +0100 |
FAQ . . . . . . . . . . . . . . . . . . . Dealing with multiple responses . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox and U. Kohler 4/05 How do I deal with multiple responses? http://www.stata.com/support/faqs/data/multresp.html SJ-5-1 st0082 . . . . . . . . . . . . . . . Tabulation of multiple responses (help _mrsvmat, mrgraph, mrtab if installed) . . . . . . . . B. Jann Q1/05 SJ 5(1):92--122 introduces new commands for the computation of one- and two-way tables of multiple responses SJ-3-1 pr0008 Speaking Stata: On structure & shape: the case of mult. resp. . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox & U. Kohler Q1/03 SJ 3(1):81--99 (no commands) discussion of data manipulations for multiple response data Nick On Mon, Aug 22, 2011 at 11:56 AM, Christoph Engel <engel@coll.mpg.de> wrote: > Maybe I just have not found the right command, or the right keyword. But > since I frequently encountered the problem, I hope someone might point me to > a convenient solution. I want to do cross tabulation for more than 2 > variables. > > This time, I have summary data about papers that I cannot include in a > meta-study. There is a list of 10 reasons why I had to exclude them. Some > papers are excluded for more than one reason. I have dummy coded these > reasons. I therefore have a dataset of the following form > > r1 r2 r3 ... r10 > > study1 0 1 0 ... 0 > study2 1 0 1 0 > study3 0 0 1 1 > > I want to generate a table that looks like this > > r1 r2 r3 ... r10 > r1 5 0 2 0 > r2 2 4 0 0 > ... > > I thus want to say, how often a study had to be excluded for reason 1 alone, > or because it simultaneously suffered from reason 1 and reason 10 (or any > other reason). > > Is there a good way to do this? In principle, corr needs this information, > but you do not get sums. tab2 provides the information, but does not collect > it in one table. * * 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/