Notice: On March 31, it was **announced** that Statalist is moving from an email list to a **forum**. The old list will shut down on April 23, and its replacement, **statalist.org** is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Richard Williams <richardwilliams.ndu@gmail.com> |

To |
statalist@hsphsun2.harvard.edu, <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: Calculating predicted probabilities at a given value of one of the independent variables |

Date |
Wed, 26 Oct 2011 22:49:58 -0500 |

At 06:06 PM 10/26/2011, Maria Ana Vitorino wrote:

Dear Statalist users, I would like to calculate some predicted probabilities after fitting a multinomial logit model (asclogit). But, the twist is that I would like to calculate these fitted values for a given level of one of the independent variables. Namely, I would like to set one of the Xs to zero when computing the predicted probability (but not in the estimation). What would be the best way of going about this? Would it make sense to do it in 2 steps? In the first step use "predict xb" and in the second step remove the component of xb that I'm not interested and calculate the probability using "gen" and the logit formula? Or is there a better way?

webuse sysdsn1, clear clonevar xmale = male mlogit insure age i.xmale nonwhite i.site predict p1 p2 p3 if e(sample) replace xmale = 0 if !missing(xmale) predict pp1 pp2 pp3 if e(sample) ------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * 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/

**Follow-Ups**:**Re: st: Calculating predicted probabilities at a given value of one of the independent variables***From:*"Vitorino, Maria Ana" <vitorino@wharton.upenn.edu>

**References**:**st: Calculating predicted probabilities at a given value of one of the independent variables***From:*Maria Ana Vitorino <vitorino@wharton.upenn.edu>

- Prev by Date:
**Re: st: Calculating predicted probabilities at a given value of one of the independent variables** - Next by Date:
**Re: st: Calculating predicted probabilities at a given value of one of the independent variables** - Previous by thread:
**Re: st: Calculating predicted probabilities at a given value of one of the independent variables** - Next by thread:
**Re: st: Calculating predicted probabilities at a given value of one of the independent variables** - Index(es):