. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: J Am Diet Assoc. 2009 Mar;109(3):502–508.e6. doi: 10.1016/j.jada.2008.11.033

TABLE 2.

Adjusted ^a Pearson’s correlations of antioxidant nutrient intakes from the antioxidant questionnaire, mean of four 24-hour dietary recalls², and nutrient biomarkers among whites and African Americans in North Carolina (n=164)

	Antioxidant nutrient questionnaire and dietary recalls ^b		Antioxidant nutrient questionnaire and biomarkers		Dietary recalls and biomarkers

Nutrient (per day)	Whites (n=81)	African Americans (n=83)	Whites (n=81)	African Americans (n=83)	Whites (n=81)	African Americans (n=83)
Beta-carotene	0.56^****	0.44^****	0.33^**	0.27^*	0.24^*	0.24^*
Alpha-carotene	0.48^***	0.06	0.31^**	0.31^**	0.19	0.13
Beta-Cryptoxanthin	0.27^*	0.34^***	0.28^**	0.33^**	0.14	0.43^****
Lutein + Zeaxanthin	0.49^****	0.51^****	0.24^*	0.32^**	0.31^**	0.48^****
Lycopene	0.17	0.11	0.12	0.11	0.08	0.28^**
Retinols	0.17	0.12	0.12	0.23^*	0.14	0.12
Total alpha-tocopherol	0.29^**	0.30^**	0.15	0.12	0.19	0.14
Vitamin C or ascorbic acid	0.45^****	0.37^***	0.15	0.10	0.20	0.17

^****

NOTE: p≤0.0001,

^***

p≤0.001,

^**

p≤0.01,

p≤0.05

Adjusted for age, sex, education, body mass index, and, except for Vitamin C, total plasma cholesterol

Average of four 24-dietary recalls