Custom link to edit form in list – SharePoint 2010

I have created a calculated column with the following:

=CONCATENATE(“<a href=…/sites/MVE/Lists/Attendees/canceledit.aspx?ID=”,ID,”>Cancel</a>”)

The link works, however, it is not calling up the right item. It just edits the next item in the list. I have also tried using {“&ID&”} and it does the same thing.

Any ideas why this isn’t editing the correct item?

Thanks