Table 3.

Changes of T2 values (SD, in ms) after 9 years follow-up

Change of T2 value in:	Control (n=38)	Migraine (n=90)	95% CI	p-value (age adjusted)
Putamen	2.9 (1.6)	3.2 (1.9)	−0.6 – 0.8	0.8
Putamen posterior	2.2 (3.0)	3.6 (3.9)	−0.2 – 2.7	0.09
Nucleus caudatus	3.2 (2.1)	3.2 (2.2)	−0.9 – 0.7	0.7
Globus pallidus	−0.4 (4.9)	0.9 (4.5)	−0.6 – 3.0	0.2
Substantia nigra pars reticularis	−4.0 (12.2)	−2.0 (10.5)	−2.0 – 6.6	0.3
Substantia nigra pars compacta	3.5 (5.5)	3.2 (4.6)	−2.5 – 1.3	0.5
Nucleus ruber	−2.3 (13.7)	2.3 (10.8)	0.9 – 10.0	0.02

Negative numbers indicate a decrease in T2-value between baseline and follow-up