Table 2. Age- and sex-adjusted mean and standard error of logarithmic-transformed serum folate level (ng/mL).

		Sex- and age-adjusted*			Sex-, age-, and energy-adjusted†
		CC	CT	TT	CC	CT	TT
All subjects	log(serum folate)	1.81 ± 0.05	1.83 ± 0.04	1.64 ± 0.09	1.81 ± 0.05	1.84 ± 0.04	1.63 ± 0.09
(n = 170)	n	60	90	20	60	90	20
Dietary folate intake
Low (<255 µg/day)	log(serum folate)	1.65 ± 0.07	1.73 ± 0.06	1.49 ± 0.12	1.67 ± 0.07	1.72 ± 0.06	1.63 ± 0.12
(n = 85)	n	28	47	9	28	47	9
High (>255 µg/day)	log(serum folate)	1.97 ± 0.07	1.94 ± 0.06	1.77 ± 0.13	1.94 ± 0.07	1.96 ± 0.06	1.60 ± 0.11‡
(n = 85)	n	32	43	11	32	43	11

* : Adjusted for age and sex by using analysis of covariance (ANCOVA)

† : Adjusted for age, sex, and energy intake by ANCOVA

‡ : Siginificantly different from CC genotype: P=0.01