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From |
Ricardo Ovaldia <ovaldia@yahoo.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Hazard ratios to rates. |

Date |
Wed, 17 Dec 2008 10:14:29 -0800 (PST) |

Thank you Steve and Enzo. Ricardo Ovaldia, MS Statistician Oklahoma City, OK --- On Wed, 12/17/08, Enzo Coviello <enzo.coviello@tin.it> wrote: > From: Enzo Coviello <enzo.coviello@tin.it> > Subject: Re: st: Hazard ratios to rates. > To: statalist@hsphsun2.harvard.edu > Date: Wednesday, December 17, 2008, 1:21 AM > Steven Samuels ha scritto: > > Hazard ratios compare two distributions, but you want > to know something about one of the distributions. It is the > same as if you had asked: "I know the ratio of two > numbers is 2:1. What is one of them?" > > > > So,unless you have more information, the answer to > your question is "No". > > I would add that a Cox model makes available an estimate of > the cumulative hazard and after we can use -stcurve- to > obtain an estimate of the hazard at some specified value. > See -stcurve-. > > > Enzo > > > > > > -Steve > > > > On Dec 16, 2008, at 5:03 PM, Ricardo Ovaldia wrote: > > > >> > >> Is there a way to convert hazard ratios from > survival to rates such as number of deaths per 10,000? > >> > >> For example if for treatment A compare to a pacebo > the HR=1.3, I know that there is 30% increase risk of > failure under treatment A. However, can I say what the rate > per 1000 patients would be? For example: X patient per 1000 > will die on treatment A > >> > > * > > * 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/ > > > > > -- Enzo Coviello > Unità di Epidemiologia e Statistica ASL Bari > Piazza V. Emanuele, 14 - 70054 GIOVINAZZO (BA) > Italy > tel +39 080 3357883 - fax +39 080 3357867 > mobile 347 5016016 ^^^^ > Home > via Imbriani, 186 - 70055 MINERVINO MURGE (BA) > tel +39 0883 695055 > > * > * 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: Hazard ratios to rates.***From:*Enzo Coviello <enzo.coviello@tin.it>

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