Table 2. Difference of dietary intake^* between case and control group or according to the different frequency of headache attacks.

Variables	Case-control group					Migraine frequency groups
	Migraine	Healthy	F	df	p value†	Moderate frequency	High frequency	F	df	p value†
Thiamine, mg	1.86 ± 0.05	1.92 ± 0.05	0.68	1.97	0.410	1.73 ± 0.07	1.58 ± 0.10	1.43	1.47	0.240
Carbohydrate, g	343.50 ± 24.58	305.17 ± 24.58	1.16	1.97	0.280	337.20 ± 40.67	258.32 ± 136.55	1.11	1.47	0.290
Fat, g	73.52 ± 3.54	79.91 ± 3.54	1.55	1.97	0.220	62.72 ± 4.40	69.86 ± 6.55	0.77	1.47	0.380
Protein, g	114.68 ± 5.74	103.61 ± 5.74	1.77	1.97	0.190	106.40 ± 8.60	1.03 ± 12.80	0.16	1.47	0.690
Riboflavin, mg	2.35 ± 0.10	2.33 ± 0.10	0.03	1.97	0.870	2.31 ± 0.11	1.95 ± 16.00	3.07	1.47	0.090
Niacin, mg	23.97 ± 0.78	23.25 ± 0.78	0.40	1.97	0.530	23.11 ± 0.87	21.23 ± 1.30	1.39	1.47	0.240
Pyridoxine, mg	2.08 ± 0.07	2.00 ± 0.07	0.60	1.97	0.440	1.97 ± 0.07	1.77 ± 0.10	2.35	1.47	0.130
Folate, µg	362.73 ± 14.62	396.20 ± 14.62	2.50	1.97	0.120	343.71 ± 17.74	300.26 ± 26.40	1.77	1.47	0.190
Cobalamin, µg	3.25 ± 0.30	2.66 ± 0.30	1.81	1.97	0.180	3.15 ± 0.42	3.00 ± 0.63	0.04	1.47	0.840

Value is expressed as means ± standard error.

^*Adjusted for energy intake; ^†p value < 0.05 considered as significant level.