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From |
Marcello Pagano <pagano@hsph.harvard.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Odds ratio |

Date |
Fri, 09 Apr 2010 16:43:17 -0400 |

True. Just like relative risks. m.p. Richard Williams wrote:

At 01:38 PM 4/9/2010, Marcello Pagano wrote:Bookmakers have no problem interpreting odds. Why people go through all sorts of contortions to avoid odds when they are as natural as probabilities is beyond me. If you take m/n as your probability then m/(n-m) are your odds. One is easier than the other? Very odd.Odds aren't bad, but odds ratios are much harder. If you tell me theodds are 4, I know that is the same as an 80% chance of success. But,if you tell me the odds ratio is 4, that is much vaguer because thereare an infinite number of ways to get such a ratio. It could be thatthe odds for the two things being compared are 4:1, 8:2, 20:5, .4:.1,etc. etc. etc. Unless I know what the odds are for one of the thingsbeing compared is, it is hard for me to have much perspective on whatthe odds ratio really means in practice.And while I don't think odds are a hard concept, I personally stilltend to convert them into probabilities.------------------------------------------- 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/

* * 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**:**st: Odds ratio***From:*Rosie Chen <jiarongchen2002@yahoo.com>

**Re: st: Odds ratio***From:*"E. Paul Wileyto" <epw@mail.med.upenn.edu>

**RE: st: Odds ratio***From:*"Lachenbruch, Peter" <Peter.Lachenbruch@oregonstate.edu>

**Re: st: Odds ratio***From:*Marcello Pagano <pagano@hsph.harvard.edu>

**Re: st: Odds ratio***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

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