TABLE 4.

Correlation coefficients for dietary intake of vitamin C and concentrations of ascorbate in plasma, muscle tissue, neutrophils, and mononuclear cells¹

	Dietary intake			Plasma			Muscle
	R	P	n2	R	P	n	R	P	n
Plasma	0.707	<0.001	98	—	—	—	—	—	—
Muscle	0.613	<0.001	68	0.749	<0.001	67	—	—	—
Neutrophils	0.417	<0.001	100	0.432	<0.001	102	0.571	<0.001	69
Mononuclear cells	0.353	<0.001	99	0.460	<0.001	101	0.436	<0.001	68

¹R and P values were determined by using linear regression analysis (Pearson's correlations).

²n, number of samples analyzed.