Relation between migraine pattern and white matter hyperintensities in brain magnetic resonance imaging

Table 4 Number of white matter hyperintensities and MIGSEV parameters

	N	Number of WMH in MRI			H	p
	N	Min.–Max.	Mean ± SD	Median	H	p
Pain intensity during attack
Mild	22	0.0–3.0	0.55 ± 0.96	0.0	13.594*	0.004*
Moderate	27	0.0–5.0	0.93 ± 1.57	0.0
Intense	6	1.0–4.0	2.0 ± 1.26	1.50
Very intense	10	0.0–9.0	3.0 ± 2.91	2.50
Duration of attack
< 4 h	17	0.0–3.0	0.76 ± 1.20	0.0	3.815	0.282
4–12 h	27	0.0–5.0	0.93 ± 1.33	0.0
12–24 h	11	0.0–6.0	1.55 ± 2.25	0.0
> 24 h	10	0.0–9.0	2.40 ± 2.88	1.50
Frequency of attacks
< 4 year	2	0.0–3.0	1.50 ± 2.12	1.50	6.316	0.177
5–10 years	7	0.0–6.0	2.14 ± 2.48	2.0
1–2 month	23	0.0–4.0	0.57 ± 1.16	0.0
1 week	18	0.0–9.0	1.50 ± 2.38	0.50
> 1 week	15	0.0–4.0	1.40 ± 1.45	1.0

H, p—H and p values for Kruskal Wallis test. WMH white matter hyperintensities
*Statistically significant at p ≤ 0.05