Jens,
I think a found a bug. I was having a difficult time to look at a simple dataset at Stata to control patients inclusion. After several try outs and different sorts, I found that some dates were changed. That is... paciente that recruited in june had dates in july, some that were at the 25aug2008 were shown as 1aug2008. At first, I tought that was typing error. Than I checked one by one and most of it were correct at the epidata dataset but wrong in the stata dataset. Thereofre I think there is something wrong in the export tool to stata format.
Later I will try other ways, and softwares of export data to see if the same dates keep coming wrong. Did anyone have any experience like this?
Also I found yesterday that EpiData does not import from Stata 10, only Stata9/8. Any update soon?