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. Author manuscript; available in PMC: 2012 Jan 15.
Published in final edited form as: Neuroimage. 2010 Oct 20;54(2):750–759. doi: 10.1016/j.neuroimage.2010.09.068

Table 4.

Linear and quadratic effects of age on T2*

ROI Regression Coefficient R2 F (1, 110) p
linear quadratic linear quadratic
HC −.29 −.003 .285 .294 1.40 ns
EC −.16 −.002 .140 .149 1.16 ns
VC −.02 −.002 .005 .015 1.12 ns
SFG −.16 −.005 .146 .186 5.40 .05
Cd −.241 −.001 .253 .253 < 1 ns
Pt −.20 −.001 .248 .250 < 1 ns

Note. HC – hippocampus; Cd – caudate nucleus; Pt – putamen; EC – entorhinal cortex; SFG – superior frontal gyrus; VC – primary visual cortex. Linear slope is estimate of T2* ms slowing per calendar year; quadratic slope is estimate of T2* ms slowing per year squared; R2 is proportion of variance explained by age.