R help - Jun 2012 - trend in incidence rate

I would like to compare the incidence rates of three groups. They are
supposed to have different risks so I would like to test whether there is a
increasing trend in the incidence rates. Does R or any packages provide a
trend test for incidence rates? I checked epiR and epitools. It seems they
do not have this function.

Thank you for the help.

--
View this message in context:
http://r.789695.n4.nabble.com/trend-in-incidence-rate-tp4634591.html
Sent from the R help mailing list archive at Nabble.com.

On Jun 27, 2012, at 3:11 AM, ericlsh wrote:
> I would like to compare the incidence rates of three groups. They are
> supposed to have different risks so I would like to test whether there is a
> increasing trend in the incidence rates. Does R or any packages provide a
> trend test for incidence rates? I checked epiR and epitools. It seems they
> do not have this function.
> 
> Thank you for the help.


You can use ?prop.trend.test or you can also look at the ?independence_test
function with 'teststat = "quad"', which is in the coin
package on CRAN.

Regards,

Marc Schwartz