USA and European doctors report A1c with a factor of 10 difference (as they do blood sugar). In USA, sugar is milligrams per centiliter, with "normal" being 70-100 fasting. In Europe it's grams per liter, which gives exactly one tenth the number (= 7 to 10). Other way for A1c, I believe -- mine is usually just above 6. Not sure what the units are on this, but a European 53 is the same as an American 5.3, which is very good for anyone.