Dear all,

I have data from a capture-recapture study and used this data to calculate the monthly survival rates over several years. Next to monthly survival I'm also interested in yearly survival rates. In order to obtain yearly survival I calculated the product of the monthly survival rates within one year (I hope this is correct so far).

How do I get confidence intervals for those yearly survival estimates?

I hope that this is not an entirely stupid question and that someone can help me.

Kind regards,

Karin