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From |
Bryan Sayer <bsayer@chrr.osu.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Save the percentage of each response category into new variables |

Date |
Fri, 09 Sep 2011 17:12:51 -0400 |

Just to clarify, this is what I meant by actual percentages: the use of

Bryan Sayer Monday to Friday, 8:30 to 5:00 Phone: (614) 442-7369 FAX: (614) 442-7329 BSayer@chrr.osu.edu On 9/9/2011 5:03 PM, Steven Samuels wrote:

-svy tab-, with a "ci" option uses the logit transform by default and for proportions, not for percentages. It can be used for ordinary, non-survey, data by preceding the -svy tab- command with svyset _n Steve On Sep 9, 2011, at 3:42 PM, Bryan Sayer wrote: While it is true that the mean of a 0/1 variable is equal to the proportion, the confidence interval obtained this way may go below zero or above one, which is generally an undesirable characteristic. Some software will use a logit transformation to prevent this, but only when doing confidence intervals of actual percentages. * * 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**:**Re: st: Save the percentage of each response category into new variables***From:*<hsiyuan@uchicago.edu>

**Re: st: Save the percentage of each response category into new variables***From:*Bryan Sayer <bsayer@chrr.osu.edu>

**Re: st: Save the percentage of each response category into new variables***From:*Steven Samuels <sjsamuels@gmail.com>

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