Table 5.

Validation of estimated energy intake and energy-adjusted nutrient intake from the FFQ2 and DFR’s in high school children

Nutrient	Total (n=89)				Girls (n=47)				Boys (n=42)
	FFQ2 mean (SD)	DFR’s mean (SD)	r	Wilcoxon (p value)	FFQ2 mean (SD)	DFR’s mean (SD)	r	Wilcoxon (p value)	FFQ2 mean (SD)	DFR’s mean (SD)	r	Wilcoxon (p value)
Energy (kcal)	2475.8 (1249.6)	2179.4 (718.1)	0.23	0.070	2068.5 (1237.3)	1821.8 (533.6)	0.34*	0.397	2921.9 (1115.1)	2571.0 (693.7)	0.08	0.111
Protein (g)	90.6 (17.7)	79.5 (15.6)	0.15	<0.01	92.3 (13.8)	76.6 (13.4)	0.01	<0.01	88.7 (21.1)	82.7 (17.3)	0.29	0.068
Fat (g)	92.8 (14.2)	81.4 (9.9)	0.15	<0.01	95.3 (14.3)	81.8 (7.9)	0.24	<0.01	90.0 (13.9)	80.9 (11.8)	0.11	<0.01
CHO (g)	324.8 (45.8)	284.8 (30.7)	0.10	<0.01	318.5 (40.6)	287.0 (26.1)	0.12	<0.01	331.7 (50.5)	282.4 (35.2)	0.14	<0.01
Ca (mg)	1001.3 (508.0)	702.4 (253.0)	0.26*	<0.01	1088.2 (468.2)	725.5 (254.5)	0.32*	<0.01	906.2 (537.8)	677.0 (251.9)	0.20	0.002
Fe (mg)	17.1 (6.4)	17.1 (6.2)	0.37*	0.700	17.1 (5.6)	17.1 (6.0)	0.18	0.800	17.0 (7.2)	17.1 (6.5)	0.47*	0.361
Mg (mg)	301.9 (75.5)	232.5 (60.0)	0.48*	<0.01	313.6 (68.7)	226.6 (59.7)	0.50*	<0.01	289.0 (81.2)	238.9 (60.3)	0.53*	<0.01
Vit C (mg)	176.1 (155.8)	161.5 (384.8)	0.48*	<0.01	192.5 (180.7)	164.7 (384.9)	0.52*	<0.01	158.1 (122.6)	157.9 (389.4)	0.45*	0.010
Vit B6 (mg)	2.3 (0.9)	2.1 (1.0)	0.53*	0.020	2.4 (0.8)	2.2 (1.1)	0.57*	0.029	2.2 (0.9)	2.1 (0.9)	0.47*	0.335
Vit B12 (mcg)	5.1 (3.1)	5.5 (4.5)	0.35*	0.350	5.2 (2.8)	6.1 (5.1)	0.46*	0.190	4.9 (3.5)	5.0 (3.6)	0.21	0.945
Folate (mcg)	387.8 (198.7)	506.0 (165.8)	0.51*	0.010	420.0 (197.7)	490.3 (152.8)	0.54*	<0.01	352.6 (196.1)	523.1 (179.4)	0.53*	<0.01
Vit D (mcg)	7.4 (6.0)	5.6 (3.9)	0.47*	<0.01	7.9 (5.9)	6.0 (4.2)	0.47*	<0.01	6.8 (6.1)	5.2 (3.6)	0.45*	0.052

^*p<0.05;

SD: Standard Deviation