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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Headache. 2017 Jun 19;57(7):1051–1064. doi: 10.1111/head.13121

Table 4.

Loadings on significant volume MRI features and the mean volume measurements for the two sub-groups

Regions for volume Loadings Region means of MRI features
Factor 1 Factor2 Sub- group 1 Sub- group 2 P.value
caudal middle frontal 0.65666 0 5230.953 6364.619 9.98E-10
cuneus*** 0 0.626061 2674.094 2968.866 0.000205
lateral occipital*** 0 0.588881 10154.66 11689.81 7.47E-07
lingual 0 0.783558 6364.472 6937.925 0.002633
medial orbitofrontal*** 0.670493 0 4254.462 4848.896 2.21E-07
paracentral 0.84648 0 3195.906 3661.634 5.08E-08
pars orbitalis 0 0.5658 2205.623 2439.052 0.000184
pericalcarine*** 0 0.724418 2012.802 2159.493 0.020236
posterior cingulate 0.705502 0 2856.123 3319.321 2.84E-08
rostral anterior cingulate 0.666202 0 2025.745 2373.522 3.67E-06
superior frontal*** 0.614916 0 18895.27 21963.5 9.15E-11
superior parietal*** 0 0.663085 11605.25 13616.74 4.08E-11
supramarginal 0 0.588233 9533.849 11222.27 4.14E-09
insula*** 0.564261 0 5934.83 6768.299 5.76E-10