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From |
Roger Newson <roger.newson@kcl.ac.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: how to get a scalar value of the ... mode |

Date |
Fri, 16 Aug 2002 14:08:56 +0100 |

At 15:29 16/08/02 +0300, Tarmo Räty wrote:

One fundamental problem here is that the mode is not necessarily unique, as many discrete values of a variable can have an equal frequency, and that frequency may be the highest frequency. You would have to specify which mode to use in such cases.Recently Roger adviced us on how to get a scalar value of the column sum by summ x scal sidney=r(sum) Works OK, for the most of the statistics, but I need the mode. After short look on manuals, no funtion returns r(mode). Currently I'm using egen and picking an observation from the created variable, but there must be an easy way.

If, in Web-aware Stata, you type

findit modes

then you will find (among other things) that Nick Cox has written a program -modes-, which outputs the whole set of modes to the stata log, and that Nick Cox and Fred Wolfe have written a program -tomode-, which can generate a new variable containing a mode of an existing variable. There are options for choosing which mode out of several.

I hope this helps.

Roger

--

Roger Newson

Lecturer in Medical Statistics

Department of Public Health Sciences

King's College London

5th Floor, Capital House

42 Weston Street

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United Kingdom

Tel: 020 7848 6648 International +44 20 7848 6648

Fax: 020 7848 6620 International +44 20 7848 6620

or 020 7848 6605 International +44 20 7848 6605

Email: roger.newson@kcl.ac.uk

Opinions expressed are those of the author, not the institution.

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**References**:**st: how to get a scalar value of the ... mode***From:*Tarmo Räty <tarmo.raty@vatt.fi>

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