Table 6.

Correlation between intake of fatty acids and vitamin D (including supplements) (FFQ) and fatty acids and 25(OH)D₃ measured in blood

	FFQa	Blood samplesb	Spearman r	p	% CC	% GM
C 18:3, n-3, ALA	0.71 (0.57, 1.06)	0.29 (0.24, 0.36)	0.046	0.666	25	38
C 20:5, n-3, EPA	0.11 (0.06, 0.15)	0.40 (0.31, 0.49)	0.252	0.015	29	29
C 22:5, n-3, DPA	0.04 (0.03, 0.06)	0.95 (0.81, 1.05)	0.250	0.016	28	25
C 22:6, n-3, DHA	0.18 (0.10, 2.77)	2.06 (1.77, 2.38)	0.232	0.026	26	25
Total n-3	1.03 (0.82, 1.53)	3.83 (3.34, 4.25)	0.175	0.096	29	33
C 18:2, n-6, LA	5.92 (4.63, 8.15)	15.63 (14.66, 16.77)	0.004	0.972	23	36
Vitamin D/25(OH)D3	2.3 (1.4, 4.0)	33.8 (27.9, 40.4)	0.000	0.998	23	36

Median, 25th and 75th percentile, Spearman correlation coefficient, percent correctly classified (CC) and grossly misclassified (GM) into quartiles of nutrient intake. (n=92).

^aFatty acid: g/day, vitamin D: µg/day

^bfatty acids: g/100 g FAME, 25(OH)D₃: nmol/l.