tokens: Members heterozygous for the deficiency ( n = 20 ) , whose CETP levels were in the lower part of the normal range , had moderately increased levels of HDL cholesterol and apolipoprotein A - I and an increased ratio of HDL subclass 2 to HDL subclass 3 , as compared with unaffected family members ( 1 . 5 + / - 0 . 8 vs . 0 . 7 + / - 0 . 4 ) .