Examination of fluctuations in atmospheric pressure related to migraine

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Table 1 The relationship between the atmospheric pressure and migraine incidence

	MA (n = 22)	MOA (n = 12)	Total (%)	TTH (n = 28) (control group)	p value
Gender (female)	21	10		19	ns
Ave. age	34 ± 4.8	33 ± 2.8		39 ± 6.4	ns
Atmospheric pressure (hPa) when developed headache
1011 to <1013	0	1	2.9	0	ns
1009 to <1011	1	1	5.9	0	ns
1007 to <1009	1	0	2.9	0	ns
1005 to <1007	5	3	23.5	1	p < 0.05
1003 to <1005	7	2	26.5	1	p < 0.05
1001 to <1003	1	1	5.9	1	ns
999 to <1001	1	0	2.9	0	ns
997 to <999	0	1	2.9	0	ns
968 to <997	0	0	0.0	0	ns

MA migraine with aura, MOA migraine without aura, TTH tension-type headache, ns not significant
Patients developed migraine at a rate of 23.5 % when the atmospheric pressure ranged from 1005 to <1007 hPa, and at a rate of 26.5 % when the atmospheric pressure ranged from 1003 to <1005 hPa. These proportions were significantly larger than those in case of controls (both p values were <0.05)