[R] epiR//Incidence rate//beginner question on syntax

[ninbut]

Hi, new in R and I would like to start with calculating an incidence rate. My
data is imported into R from a tab delimited txt file, as shown below:

    ID DATE_BIRTH   DATE_UNT   EVENT  TIME_EV
1 4867 08/02/1959 19/10/2001  1      31
2   52 15/07/1941 08/02/1999   1       6
3   63 02/01/1946 11/02/1999  1         6
4  710 21/10/1965 23/03/1999 0    10
5 1808 07/05/1952 18/06/1999  1        7
6  554 19/08/1947 15/03/1999      0      10
...
event (EVENT=1)
censoring  (EVENT=0)
How do I calculate the  incidence rate in R  for different strata of age?

1) number of events (EVENT) / personmonths to event  or censoring  (TIME_EV)
2) number of events (EVENT) / 12 personmonths to event  or censoring
(TIME_EV) 

I am lost here, and did not succeed to understand epiR, and the option to
create a matrix for simple  incidence rates, and not incidence rate ratios. 
If anyone could help me out with a simple to understand syntaxt to get
further, I would aprreciate so much and thanks in advance!!
nb



--
View this message in context: http://r.789695.n4.nabble.com/epiR-Incidence-rate-beginner-question-on-syntax-tp4645896.html
Sent from the R help mailing list archive at Nabble.com.