TABLE 5.

Pearson correlations between reported dietary intake of α-tocopherol or plasma α- and γ-tocopherol concentrations and corresponding tocopherol urinary metabolite concentrations¹

	α-CEHC (μmol/g)2						α-CMBHC (μmol/g)2						γ-CEHC (μmol/g)2
	All subjects(n = 233)		High group3(n = 33)		Typical group3(n = 200)		All subjects(n = 233)		High group3(n = 33)		Typical group3(n = 200)		All subjects(n = 233)		High group3(n = 33)		Typical group3 (n = 200)
	R	P	R	P	R	P	R	P	R	P	R	P	R	P	R	P	R	P
Dietary α-tocopherol (mg/d)4	0.42	0.001	0.42	0.01	0.37	0.001	0.38	0.001	0.29	NS	0.35	0.001	0.10	NS	0.31	NS	0.04	NS
Plasma α-tocopherol (mmol/mol)5	0.54	0.001	0.48	0.001	0.44	0.01	0.35	0.001	0.17	NS	0.28	0.001	0.09	NS	−0.01	NS	0.08	NS
Plasma γ-tocopherol (mmol/mol)5	−0.45	0.001	−0.39	0.02	−0.44	0.001	−0.27	0.001	−0.20	NS	−0.28	0.001	0.05	NS	−0.10	NS	0.09	NS
Dietary α-tocopherol (mg/d)6	0.39	0.001					0.37	0.001					0.06	NS
Plasma α-tocopherol (mmol/mol)6	0.55	0.001					0.35	0.001					0.04	NS
Plasma γ-tocopherol (mmol/mol)6	−0.44	0.001					−0.27	0.001					0.10	NS

¹Correlations were performed on log-transformed values. CEHC, carboxyethyl hydroxychroman; CMBHC, carboxymethylbutyl hydroxychroman.

²Mean of two 24-h urine collections; normalized for creatinine.

³Subjects were divided into high or typical grouping based on a plasma α-tocopherol value >33 μmol/L. Those subjects with plasma values >33 μmol/L were placed in the “High” group, and those subjects with plasma values ≤33 μmol/L were placed in the “Typical” group.

⁴Dietary (http://24hrrecall.com); mean of first 6 dietary recalls.

⁵Plasma concentrations were normalized for total cholesterol.

⁶Model adjusted for total plasma cholesterol, plasma triglycerides, BMI, age, sex, race, and energy intake.