A command to calculate age-standardized rates with efficient interval estimation

Dario Consonni, Enzo Coviello, Carlotta Buzzoni, Carolina Mensi

Research output: Contribution to journalArticlepeer-review


In this article, we illustrate the command distrate, which calculates age-standardized rates with efficient interval estimation by using formulas developed by Tiwari, Clegg, and Zou (2006, Statistical Methods in Medical Research 15: 547-569) as a modification of the method proposed by Fay and Feuer (1997, Statistics in Medicine 16: 791-801). This method is currently used in the Surveillance, Epidemiology, and End Results Program of the National Cancer Institute in Bethesda, Maryland; the Italian Association of Cancer Registries (Associazione Italiana Registro Tumori, AIRTUM); and the Lombardy Mesothelioma and Sinonasal Cancer Registry in Northern Italy. The command produces a compact output and allows for the possibility of specifying a rate multiplier, for instance, ×100,000 or ×1,000,000. Furthermore, rates and confidence limits can be easily exported to an external dataset for further processing (for example, for making graphs). The command distrate is a useful addition to the official Stata command dstdize.

Original languageEnglish
Pages (from-to)688-701
Number of pages14
JournalStata Journal
Issue number4
Publication statusPublished - 2012


  • Confidence intervals
  • Confounding
  • Distrate
  • Incidence rates
  • Mortality rates
  • St0276
  • Standardization

ASJC Scopus subject areas

  • Mathematics (miscellaneous)


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