Association between Body Mass Index and Migraine: A Survey of Adult Population in China

Table 1

Demographic characteristics of the samples.

Characteristics	Control		EM		CM		Total sample
	n	(%)	n	(%)	n	(%)	n	(%)
Gender
Male	47	23.5	38	22.89	30	22.38	115	23
Female	153	76.5	128	77.11	104	77.61	385	77
Mean age (year) (mean ± SD)	42.81 ± 0.55		40.42 ± 2.38		43.36 ± 2.93
Range (year)	18–65		18–65		18–65			18–65
Educational level
Illiterate	17	8.5	14	8.43	10	7.46	41	8.2
Primary school	38	19	32	19.28	26	15.66	96	19.2
Secondary school	45	22.5	43	25.9	33	24.62	121	24.2
High school	53	26.5	47	28.31	37	27.61	137	27.4
College and above	47	23.5	30	18.07	28	20.9	105	21
Marital status
Unmarried	35	17.5	29	17.46	14	10.45	78/500	15.6
Married	138	69	109	65.67	93	69.4	340	68
Divorced	17	7	18	10.84	19	14.18	54	10.8
Widowed	10	5	10	6.02	8	5.97	28	5.6