Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | "Nick Cox" <n.j.cox@durham.ac.uk> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | st: RE: Question on survey data analysis |
Date | Tue, 2 Mar 2010 12:57:55 -0000 |
Working backwards, your last question appears to be whether you should use the -svy- commands. Not using -svy- implies that your data are, or are equivalent to, a simple random sample. Using -svy- commands does not mean that the data were a social survey, or vice versa. If your sampling design contains the kind of information that -svyset- requires, then you should use it. Your questions are of a kind that have been called "multiple response" in Stata circles. (There is no completely satisfactory term, in my view.) Any way, those key words identify some articles that may help. The Stata Journal articles here are all visible on the Stata Journal website. . search multiple response Keyword search Keywords: multiple response Search: (1) Official help files, FAQs, Examples, SJs, and STBs Search of official help files, FAQs, Examples, SJs, and STBs 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 Example . . . Seminar: Beyond Binary: Multinomial Logistic Regression in Stata . . . . . . . . . . . . . . . . . . UCLA Academic Technology Services 6/06 http://www.ats.ucla.edu/stat/stata/seminars/ stata_BeyondBinaryLogistic/Stata_multinomial2.htm 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 n.j.cox@durham.ac.uk Michelle [Z.Ou@warwick.ac.uk] I designed a survey about loyalty schemes (e.g. tesco clubcard that sort of programmes) for my economics research project, but not sure how to compute multiple choice questions in the questionnaire. One of my questions was: 'Why don't you join any loyalty schemes?' and my list of answers include: a) poor customer service, b) unachievable rewards, c) unrealistic points, d) too much marketing communications, e) redeeming schemes too complicated, f) choice of rewards available and g) others, i.e. 7 options in total. Respondents were asked to tick all that apply. I want to see which are the most deterring factors of the list that make these students not want to join loyalty schemes. Could someone give me any hints? Do I have to create a new dummy variable for each of the seven alternatives? A similar question asked which, if any, respondents are aware of out of a list of ten different stores/retailers who have loyalty schemes. Again, do I have to treat each option as a independent dummy? Also do I have to declare data type as survey data to carry out any further analysis? Or is it alright for me to do simple regression analysis without letting stata know it's survey data I'm working with? Does it affect my results? * * 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/