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

Table 8

Frequency of headache was significant among different BMI categories between CM and EM.

Weight classification	Severe			Time of headache onset (>72 h)			Frequency (>10 days/months)
	EM	CM		EM	CM		FM	CM
Underweight	16.71 ± 0.5884	17.14 ± 0.3642	0.3807	17.82 ± 0.1337	17.77 ± 0.1249	0.4315	0	17.16 ± 0.3904	0
Normal	21.34 ± 0.2356	21.58 ± 0.2831	0.5275	21.44 ± 0.5397	22.22 ± 0.4548	0.2296	21.40 ± 0.3313	21.83 ± 0.2063	<0.0001
Overweight	27.52 ± 0.3692	27.16 ± 0.3680	0.5031	26.17 ± 0.6147	26.34 ± 0.5946	0.1057	27.43 ± 0.3776	27.28 ± 0.2644	0.0001
Obese/morbidly obese	34.22 ± 2.919	34.06 ± 2.729	0.9853	31.35 ± 0.2431	30.85 ± 0.7500	0.3991	38.07 ± 4.157	34.38 ± 0.8696	0.1696