Thanks Svend for pointing me to dstdize, but I have a few specific queries
on that.
My original question was about how to use STATA to give age-adjusted or
age-standardised incidence rates.
1. for dstdize - How can i tell STATA that it should use person-time data
(pyar) rather than population count?
2. Do i have to use an external reference standard population (say the
European standard population - or suggestions for others welcome), or can
the combined population (or person time) of the study itself by each age
category be used instead?
so say, crude incidence in cohort is: 4.1 per 1000 pyar (total pyar =
39570), and in each of 3 age categories the incidence rates and person time
is as below (computed using strate command, for outcome = chd-death:
Age category incidence rate per 1000 person-time (yrs)
age 40-49 1.4 17700
age 50-59 4.9 15500
age 60-69 9.3 6370
Then how can i tell stata to give me age-standardised rate?
(PS - have attached a small dataset in case that will help - outcome var is
chddth_any, agegr3 is the 3 age categories)
many thanks
Nita
-----Original Message-----
From: Svend Juul [mailto:[email protected]]
Sent: 02 March 2005 14:37
To: [email protected]
Subject: Re: st: age adjusted incidence rates in STATA
This is an example of "direct" standardization. See [R] dstdize.
Svend
________________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
*
* 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/
*
* 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/
