[Data column name] EventSubClass [Data type] int [Column ID] 21 [Filterable] Yes [Description] 
Describes the cause of the recompilation: 1 = Schema changed 2 = Statistics changed 3 = Deferred compile 4 = Set option changed 5 = Temp table changed 6 = Remote rowset changed 7 = For Browse permissions changed 8 = Query notification environment changed 9 = Partition view changed 10 = Cursor options changed 11 = Option (recompile) requested