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st: New package -rcentile- on SSC

From   "Roger B. Newson" <>
To   "" <>
Subject   st: New package -rcentile- on SSC
Date   Mon, 03 Jun 2013 12:19:36 +0100

Thanks once again to Kit Baum, a new package -rcentile- is now available for download from SSC. In Stata, use the -ssc- command to do this.

The -rcentile- package is described as below on my website, and computes robust confidence intervals for percentiles, allowing for weights and/or clustering if necessary. It requires the existing SSC packages -somersd-, -scsomersd- and -rcentile- in order to work. I would like to thank Steven Samuels for suggesting (a few years ago) that a package like -rcentile- might be a good idea. The -rcentile- package might be even better if it also supported sampling strata and finite-population corrections, but this would require some extensive re-writing of the -somersd- package, which I do not currently have the time to do.

Best wishes


Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Web page:
Departmental Web page:

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

package rcentile from

      rcentile: Robust confidence intervals for percentiles

      rcentile calculates robust confidence intervals for
      percentiles, allowing for clustered sampling and/or weighting
      if necessary.  rcentile requires the SSC packages somersd,
      scsomersd and expgen in order to work.

      Author: Roger Newson
      Distribution-date: 26may2013
      Stata-version: 10.0

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