Notice: On March 31, it was **announced** that Statalist is moving from an email list to a **forum**. The old list will shut down on April 23, and its replacement, **statalist.org** is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Marcos Sanches <msanches35@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Test for the difference between two ratios |

Date |
Tue, 25 Oct 2011 23:03:34 -0400 |

Thanks a lot Shaun, I was able to use lincom to solve my problem, it worked perfectly! Marcos On Tue, Oct 25, 2011 at 9:38 AM, Scholes, Shaun <s.scholes@ucl.ac.uk> wrote: >> >> Marcos, try avoid using if when using svy commands for subpopulations. Instead you should use the over command: e.g >> >> svy:ratio x/y,over(gender) >> >> Having done that it appears as though you can use the lincom command to test the difference between the two ratios. >> >> An excellent example using lincom after svy:mean can be found in the STATA manual for survey data: section "svy postestimation". >> >> Hope this helps >> Shaun >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> -----Original Message----- >> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Marcos Sanches >> Sent: 25 October 2011 14:15 >> To: statalist@hsphsun2.harvard.edu >> Subject: st: Test for the difference between two ratios >> >> Hi all, >> >> This might be a simple question but I did not manage to find the answer to it. I have two variables, say X and Y, so I calculated the >> ratio: >> >> svy: ratio x/y >> svy: ratio x/y if gender ==1 >> svy: ratio x/y if gender ==2 >> >> Now, what I want to do is to test whether this ratio is the same for, say, males and females. I would be grateful if someone could shed some light on how to do this.. >> >> Thanks a lot! >> >> Marcos >> * >> * 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/ > * * 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: Test for the difference between two ratios***From:*Marcos Sanches <msanches35@gmail.com>

**st: RE: Test for the difference between two ratios***From:*"Scholes, Shaun" <s.scholes@ucl.ac.uk>

- Prev by Date:
**Re: st: marginal effect after xtlogit model** - Next by Date:
**st: beta regression** - Previous by thread:
**st: RE: Test for the difference between two ratios** - Next by thread:
**Re: st: reoprob claims to have no observations** - Index(es):