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From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Confidence Intervals of Predicted scores in CLARIFY - adding together |

Date |
Fri, 3 Sep 2010 16:39:02 -0400 |

-- I was wrong, because I didn't bother to look up the -clarify- commands. You don't need to go back to -ologit-. ******* simpqi, genpr(pr1 pr2 pr3 pr4) // save category probabilities gen pr34 = pr3 + pr4 mean pr1 pr2 pr3 pr4 pr34 ******* Note that predictions at the mean are not necessarily typical of the majority of predictions. See: http://www.stata.com/statalist/archive/2010-07/msg01596.html -Steve On Fri, Sep 3, 2010 at 12:35 PM, Steve Samuels <sjsamuels@gmail.com> wrote: > -- > > James: To compute the CIs, combine the two upper categories before > running -ologit-. > > Note that the names of the programs are "Stata" and "Clarify". > Neither is an acronym like "SAS" or "SPSS". > > Steve > > Steven J. Samuels > sjsamuels@gmail.com > > > On Fri, Sep 3, 2010 at 11:47 AM, James Laurence > <james.laurence@sjc.ox.ac.uk> wrote: >> Hi there, >> >> I was wondering if you might be able to help me with a query. >> >> I am using the STATA program CLARIFY (Michael Tomz, Jason Wittenberg, and Gary King (2001). CLARIFY: Software for Interpreting and Presenting Statistical Results. Version 2.0 Cambridge, MA: Harvard University, June 1. http://gking.harvard.edu) >> >> I'm using it to get a set of predicted scores from an OLOGIT model I've been running. >> >> So, I run the model. Then... >> >> setx mean >> >> setx div 0.1 >> >> simqi >> >> ...this gives me a set of predicted scores for each category of my OLOGIT dependent variable: >> >> >> Quantity of Interest | Mean Std. Err. [95% Conf. Interval] >> ---------------------------+-------------------------------------------------- >> Pr(newsre~t=1) | .025927 .0027974 .0209661 .0317577 >> Pr(newsre~t=2) | .1168595 .0059575 .1055424 .128563 >> Pr(newsre~t=3) | .6739712 .0090134 .6563168 .6909184 >> Pr(newsre~t=4) | .1832423 .0074309 .1699783 .1987786 >> >> I want to create a graph in excel using the top two categories combined: so 0.674 + 0.183 = this gives me a predicted score of 0.86 >> >> Here's my question. I also want to add CONFIDENCE INTERVALS to this value using the C.I.s provided by CLARIFY. Do I simply add the C.I.'s together for the top two categories as I did with the predicted scores? >> e.g. the C.I.s for this predicted score would be min. 0.656 + 0.169 and the max. would be 0.691 + 0.199? >> >> So, the C.I.s of my predicted score of 0.86 (minimum 0.825) and (maximum 0.888)? >> >> Is this correct? >> >> Thanks in advance >> >> James >> >> * >> * 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/ >> > * * 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**:**st: Confidence Intervals of Predicted scores in CLARIFY - adding together***From:*James Laurence <james.laurence@sjc.ox.ac.uk>

**Re: st: Confidence Intervals of Predicted scores in CLARIFY - adding together***From:*Steve Samuels <sjsamuels@gmail.com>

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