Based on several other studies of various doses of 1) unopposed oestrogens, 2) oestrogen-progestogen sequential combinations and 3) oestrogen-progestogen continuous combinations, the CHMP considered it reasonable and scientifically acceptable to extrapolate that this low dose continuous oestrogen-progestogen combination would result in a considerably lower rate of endometrial hyperplasia than seen with a combination containing twice the oestrogen dose.