Displaying 1 result from an estimated 1 matches for "sumofbutterfli".
Did you mean:
sumofbutterflies
2011 Apr 07
1
Quasipoisson with geeglm
...n total, there are 66 sites, and 19 years for which observations might be available. However, only 326 observations are available (instead of 1254). For the time being, I ignore the large number of missing values, and the fact that GEE is only valid under MCAR. When I run the following code
geeglm(SumOfButterflies ~ RES_YEAR, family = poisson, data = ManijurtNoNA, id = RES_ROTE_ID, corstr = "ar1")
I obtain "normal" output. Not surprisingly, overdispersion is present (Estimated Scale Parameters: [1] 185.8571), so changing to quasipoisson is needed. However, the code below
geeglm(SumOf...