Table 4.

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

			Participants who were younger than 50 yrs at baseline
Mean T2 value of:	Control (n=38)	Migraine (n=90)	[95% CI];p-value (age adjusted)	Control (n=29)	Migraine (n=45)	[95% CI];p-value (age adjusted)
Putamen	78.2 (2.2)	77.5 (3.5)	[−2.2–0.2];0.1	77.7 (2.0)	77.0 (2.8)	[−2.0–0.5];0.2
Putamen posterior	75.7 (2.5)	75.4 (5.2)	[−2.5–1.0];0.4	75.4 (2.4)	74.5 (3.8)	[−2.4–0.7];0.3
Nucleus caudatus	86.4 (2.4)	85.8 (3.0)	[−1.7–0.5];0.3	86.5 (2.3)	85.9 (2.7)	[−1.9–0.6];0.3
Globus pallidus	73.6 (3.0)	73.8 (3.5)	[−1.5–1.1];0.8	73.5 (2.3)	73.3 (2.4)	[−1.3–1.0];0.8
Substantia nigra pars reticularis	73.0 (3.3)	73.4 (4.2)	[−1.3–1.8];0.7	73.2 (3.6)	73.1 (4.4)	[−2.0–1.9];0.9
Substantia nigra pars compacta	85.3 (2.8)	84.8 (4.0)	[−2.2–0.5];0.2	85.4 (2.9)	84.0 (4.1)	[−3.2–0.3];0.1
Nucleus ruber	81.8 (4.0)	82.0 (4.0)	[−1.9–1.0];0.5	80.8 (3.6)	81.0 (3.2)	[−1.3–1.8];0.8