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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: update seqlogit |

Date |
Wed, 10 Feb 2010 07:39:09 -0800 (PST) |

--- On Wed, 10/2/10, Ángel Rodríguez Laso wrote: > 1) There is a categorical independent variable. Can xi be > used with -seqlogit-? yes > 2) One step of the process has three branches instead of > two (at home, absent, long absence). Can this be modelled with > -seqlogit-? Is 3 4:5 6 the correct way to define it? This can be modelled but what you propose is not correct, you would need to have two colons. Say 4 = "at home", 5 = "absent", and 6 = "long absent", then you would represent that transition as 3 4 : 5 : 6. > 3) It is difficult for me to give levels to the categories. > Of course, being interviewed is the desired outcome, but I > cannot say that it is x times more important that other > outcomes, as you do in your dissertation. On the other hand, > these other outcomes would definitely have to have the same > value. These values are only necesary for the decomposition of the effect on the expected outcome into a weighted sum of the effects at each transition. If there is not a scale on which the outcome can be measured, than you can't compute a mean, so this decomposition would not make sense in that case. However you can still estimate a sequential logit, in order to determine the effects at each transition. > 4) In this example, I try to decompose the effect of the > variable sex, but I would like to investigate the > decomposition of the effects of other explanatory variables. > I suppose I only need to change the other variables for sex > in ofinterest. I’m interested in the interaction: > sex*origin and sex*age1 sex*age2 sex*age3. I’ve > understood that the options ofinterest (sex) > over(origin age1 age2 age3) generate the interaction terms. Correct. Adriaan Hoogendoorn and Jacco Daalmans have recently published a similar analysis of response patterns in: Adriaan Hoogendoorn and Jacco Daalmans (2009) "Nonresponse in the Recruitment of an Internet Panel Based on Probability Sampling" Survey Research Methods, 3(2):59--72. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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**:**Re: st: update seqlogit***From:*Ángel Rodríguez Laso <angelrlaso@gmail.com>

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