POPAN & minimum sampling occassions for RELEASE GOF

[Rabia]

Hi all,

I am dealing with an open population and I've decided to use the POPAN option. I have three incomplete years of data (i.e. February to November for 2008, 2009 and 2010) which I split into a 3-occassion study from which I have identified 272 individuals. When I try to run the Release GOF test it does not give any Test2 and/or Test3 results - is this because I do not have enough occassions? What is the minimum amount of sampling occassions needed to run the Release GOF test. Also, is there any additional method to do a GOF test other than running Release?

Thank you,
Rabi'a