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st: RE: Re: Standardised Incidence Rate


From   Tim Evans <Tim.Evans@wmciu.nhs.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Re: Standardised Incidence Rate
Date   Tue, 1 May 2012 09:09:00 +0100

John,

Are you trying to calculate age standardised rates? You could use -distrate- but you would also need the underlying population of the West Midlands for that period. Incidentally, 850 cases seems rather too few cases to represent the lung cancer burden in the West Midlands - even for one year, let alone ten years. Is this a particular cohort that you are trying to calculate rates upon?

Best wishes

Tim

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of john dark
Sent: 30 April 2012 22:38
To: statalist@hsphsun2.harvard.edu
Subject: st: Re: Standardised Incidence Rate

Dear All,

I am a Public Health MSc student with reasonable experience of Stata.
I need to calculate the standardised incidence rate of lung cancer in
the West Midlands region of England and assess whether it has
increased, decreased or remained stable over the last 10 years. The
dataset I have includes 850 observations each representing a patient
with lung cancer, for whom the age, gender, date of diagnosis and
other confounders are all recorded. I know that Poisson regression is
normally used to analyse this sort of data but am at loss as to how to
proceed as I have no experience of doing this whatsoever. I would
therefore be very grateful for guidance on how to set the dataset up
in the correct format and the commands I will need to use to do the
analysis.

Many thanks for your help.

John
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