Table 3.

Reproducibility of estimated energy intake and energy-adjusted nutrient intake from the initial FFQ (FFQ1) and repeat FFQ (FFQ2) in high school children

Nutrient	Total (n=89)			Girls (n=47)			Boys (n=42)
Nutrient	FFQ1 mean (SD)	FFQ2 mean (SD)	r	FFQ1 mean (SD)	FFQ2 mean (SD)	r	FFQ1 mean (SD)	FFQ2 mean (SD)	r
Energy (kcal)	3149.6 (1490.1)	2475.8 (1249.6)	0.30^*	2865.2 (1536.7)	2068.5 (1237.3)	0.34	3461.2 (1389.0)	2921.9 (1115.1)	0.28^*
Protein (g)	110.1 (21.7)	90.6 (17.7)	0.42^*	104.6 (18.4)	92.3 (13.8)	0.58^*	88.7 (21.1)	88.7 (21.1)	0.35^*
Fat (g)	113.2 (21.9)	92.8 (14.2)	0.45^*	112.1 (23.3)	95.3 (14.3)	0.56^*	90.0 (13.9)	90.0 (13.9)	0.35^*
CHO (g)	432.9 (63.0)	324.8 (45.8)	0.45^*	442.4 (59.5)	318.5 (40.6)	0.59^*	331.7 (50.5)	331.7 (50.5)	0.38^*
Ca (mg)	1285.3 (577.0)	1001.3 (508.0)	0.46^*	1239.4 (570.9)	1088.2 (468.2)	0.60^*	906.2 (537.8)	906.2 (537.8)	0.38^*
Fe (mg)	20.7 (6.7)	17.1 (6.4)	0.33^*	20.5 (6.6)	17.1 (5.6)	0.23	17.0 (7.2)	17.0 (7.2)	0.37^*
Mg (mg)	397.3 (91.2)	301.9 (75.5)	0.55^*	398.7 (79.7)	313.6 (68.7)	0.54^*	289.0 (81.2)	289.0 (81.2)	0.57^*
Vit C (mg)	310.4 (411.4)	176.1 (155.8)	0.40^*	272.9 (265.5)	192.5 (180.7)	0.52^*	158.1 (122.6)	158.1 (122.6)	0.26
Vit B6 (mg)	3.0 (1.2)	2.3 (0.9)	0.40^*	3.0 (1.3)	2.4 (0.8)	0.53^*	2.2 (0.9)	2.2 (0.9)	0.26
Vit B12 (mcg)	4.9 (3.2)	5.1 (3.1)	0.44^*	4.4 (3.2)	5.2 (2.8)	0.60^*	4.9 (3.5)	4.9 (3.5)	0.36^*
Folate (mcg)	542.9 (288.2)	387.8 (198.7)	0.51^*	565.4 (311.7)	420.0 (197.7)	0.66^*	352.6 (196.1)	352.6 (196.1)	0.4^*
Vit D (mcg)	9.4 (6.7)	7.4 (6.0)	0.48^*	9.3 (6.6)	7.9 (5.9)	0.52^*	6.8 (6.1)	6.8 (6.1)	0.43^*

p<0.05;

SD: Standard Deviation