Table 2.

Dietary intakes of selected nutrients and food groups across quartiles of energy-adjusted dietary fiber intake (n = 3,362)^a.

	Quartiles of energy-adjusted dietary fiber intake
	(n = 840) (<19 g/day)	(n = 841)(19–22.1 g/day)	(n = 841) (22.2–25.6 g/day)	(n = 840)(>25.6 g/day)	pb
Energy (kcal/day)	2,530.60 ± 29.70	2,221.13 ± 29.74	2,261.33 ± 29.35	2,513.06 ± 29.27	<0.001
Nutrients
Proteins (% of energy)	14.67 ± 0.08	15.00 ± 0.08	14.88 ± 0.08	14.76 ± 0.08	0.03
Fats (% of energy)	40.39 ± 0.23	38.30 ± 0.23	36.87 ± 0.23	34.55 ± 0.22	<0.001
Carbohydrates (% of energy)	45.72 ± 0.27	47.84 ± 0.27	49.85 ± 0.26	53.04 ± 0.26	<0.001
Dietary fiber (g/day)	15.90 ± 0.10	20.69 ± 0.10	23.86 ± 0.10	29.75 ± 0.10	<0.001
Omega-3 fatty acids (g/day)	1.78 ± 0.03	1.78 ± 0.03	1.78 ± 0.03	1.64 ± 0.03	<0.001
Vitamin B1 (mg/day)	1.62 ± 0.02	1.78 ± 0.02	1.94 ± 0.02	1.96 ± 0.02	<0.001
Vitamin B6 (mg/day)	1.82 ± 0.01	1.94 ± 0.01	2.00 ± 0.01	2.17 ± 0.01	<0.001
Iron (mg/d)	16.08 ± 0.11	17.71 ± 0.11	18.19 ± 0.11	18.46 ± 0.11	<0.001
Vitamin C (mg/day)	74.03 ± 1.70	89.48 ± 1.71	105.27 ± 1.68	136.82 ± 1.68	<0.001
Vitamin E (mg/day)	22.22 ± 0.22	21.64 ± 0.22	21.04 ± 0.21	20.91 ± 0.21	<0.001
Food groups (g/day)
Red meat	78.31 ± 1.49	80.62 ± 1.49	78.60 ± 1.47	76.81 ± 1.46	<0.001
Whole grains	14.02 ± 2.63	32.61 ± 2.64	39.80 ± 2.60	82.50 ± 2.60	<0.001
Refined grains	438.46 ± 5.88	411.92 ± 5.90	394.29 ± 5.81	329.09 ± 5.79	<0.001
Fruit	193.24 ± 7.44	257.75 ± 7.45	337.33 ± 7.34	476.80 ± 7.32	<0.001
Vegetables	198.11 ± 4.15	224.14 ± 4.16	242.84 ± 4.01	290.19 ± 4.09	<0.001
Nuts, soy and legumes	40.78 ± 1.25	52.01 ± 1.26	60.97 ± 1.24	74.55 ± 1.23	<0.001
Dairy	397.58 ± 9.56	352.21 ± 9.58	336.36 ± 9.43	310.51 ± 9.41	<0.001

^aAll values are means ± standard error (SE); energy intake is adjusted for age and gender; all other values are adjusted for age, gender, and energy intake.

^bObtained from analysis of covariance (ANCOVA).