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st: age adjusted incidence rates in STATA
> Dear STATAlist users
> Greetings from Cambridge in England!
> I have a query about age-adjusing incidence rates in STATA.
> - using stset and strate, i compute that the incidence rate for chd
> mortality in our cohort is 4.1 per 1000 pyar - where pyar is person years
> at risk (and in our cohort total pyar= 39570 at 14 yrs follow-up)
> - incidence rate in cohort in each of 3 age-bands is 1.4, 4.9 and 9.3 per
> 1000 pyar (age 40-49, 50-59, 60+)
> - the corresponding total pyar in each of the 3 age bands are: 17700 yrs,
> 15500 yrs and 6400 yrs approx.
> So how can i calculate what is the age-standardised or age-adjusted
> incidence in the cohort using STATA commands?
> If i needed to adjust for age and sex/gender, how would i do that?
> If you need any further info, pls let me know
> Many thanks for your help
> Dr Nita Forouhi
(sorry for cross posting - am new to statalist!)
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