Earhoop of the Eighteen Eyes, drop from Keladrix in Inktu'ta (Gates of Discord) Item says it has Improved Dodge I which "Increases your dodge rating by 10." It does not. Dodge does not move. 305/305 before and after putting it on. Another Dodge-type item (Signet of Might, tradeskill quest from PoP), says it improves Dodge by 8% and raises me to 329/305. That's not Improved Dodge I however. So Improved Dodge I on the Earhoop of Eighteen Eyes does nothing.
Dodge Chance = (((SKILL + 100) + [((SKILL+100) * SPA(174).Base1) / 100]) / 45) + [(hAgi / 25) - min([hAgi / 25], hStrikethrough)]. the "10 rating" on that plugs into spa 174 base 1 value of 10 it doesn't direct touch your Dodge skill that a +x% item does