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From |
Steven Joel Hirsch Samuels <sjhsamuels@earthlink.net> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: How to calculate mortality ratios |

Date |
Sun, 2 Dec 2007 11:47:47 -0500 |

Gaby, why don't you lay out exactly what your files are, and what analysis variables are in them. Do you want to do 'proportional' mortality ratios, single mortality rates? Do you want to test differences among regions (AI02)?

-Steven

On Dec 2, 2007, at 10:13 AM, Ana Gabriela Guerrero Serdan wrote:

Steve, thanks. Yes sorry my ratio should have been x/y. I missed to calculate the total population first as this is in a separate file. I was doing calculations only among those that died from different causes. So from file 2 I need to calculate my total population. I have individual information for each household in the survey. Not sure if I should first generate a count variable? svyset AI06 [pw= expweigh], strata( AI05) gen count=_n svy: total count, over(AI02) then use this to calculate the mortality ratio in file 1 as you indicated. thanks again, Gaby --- Steven Joel Hirsch Samuels <sjhsamuels@earthlink.net> wrote:Gaby: 1. Ratio requires a numerator and denominator: svy: ratio myratio = x/y svy: ratio dead should return an error message in Stata 10. What are your individual observations? people with dead indicating status yes/no, or some other unit? If you have an 'area' as your observation, with 'dead' counting deaths and 'pop' giving the population total for the area, then svy: ratio (mr= dead/pop) would work. 2. svy: prop death will give proportions dead and not dead. This will be correct if your analytic unit is person. 3. I suggest that you form new strata by pooling singletons into neighboring regions. -Steven On Dec 2, 2007, at 8:25 AM, Ana Gabriela Guerrero Serdan wrote:Dear Stata Users, I have two related questions: 1) Im trying to calcuate mortality ratios for different sub-populations using survey data. Is it very naive from my side to use the following commands? svyset AI06 [pw= expweigh], strata( AI05) svy: ratio death, over (Province) I also get similar results with prop. 2) I dont get any SE because I have strata withonesampling unit. I see that Stata suggests (as alsosomebooks) to delete or collapse the strata with one sampling unit. Do you know what are theimplicationsfor this? Would I need to collapse the strata according to region? thanks, Gaby Gaby Guerrero Serdan Deparment of Economics Royal Holloway, University of London TW20 OEX Egham, Surrey England, UKhttp://www.rhul.ac.uk/economics/About-Us/postgrads.htmlhttp://www.flickr.com/photos/49939890@N00/ Tel: +44 7912657259____________________________________________________________________________________ Be a better pen pal. Text or chat with friends inside Yahoo! Mail. Seehow. http://overview.mail.yahoo.com/ * * For searches and help try: *http://www.stata.com/support/faqs/res/findit.html* http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/Steven Samuels sjhsamuels@earthlink.net 18 Cantine's Island Saugerties, NY 12477 Phone: 845-246-0774 EFax: 208-498-7441 * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

Gaby Guerrero Serdan

Deparment of Economics

Royal Holloway, University of London

TW20 OEX

Egham, Surrey

England, UK

http://www.rhul.ac.uk/economics/About-Us/postgrads.html

http://www.flickr.com/photos/49939890@N00/

Tel: +44 7912657259

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Steven Samuels sjhsamuels@earthlink.net 18 Cantine's Island Saugerties, NY 12477 Phone: 845-246-0774 EFax: 208-498-7441 * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: How to calculate mortality ratios***From:*Ana Gabriela Guerrero Serdan <ag_guerreroserdan@yahoo.com>

**References**:**Re: st: How to calculate mortality ratios***From:*Ana Gabriela Guerrero Serdan <ag_guerreroserdan@yahoo.com>

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