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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Neurosci Biobehav Rev. 2014 Feb 23;0:180–192. doi: 10.1016/j.neubiorev.2014.02.005

Table 4.

Summary effect sizes within each sub-region of prefrontal area.

Sub-region k N Weighted Effect Size 95% CI for M* mean weighted
correlation (r)		 Homogeneity Test
mean (M*) se p Qw df p
LPFC 19 1850 0.217 0.050 <.001 0.121 0.314 0.214 72.941 18 <.001
OFC 8 569 −0.056 0.103 0.585 −0.259 0.146 −0.056 36.820 7 <.001
MPFC 6 292 0.200 0.088 0.023 0.028 0.372 0.197 9.565 5 0.089

Note: Positive effect sizes refer to the relationship that larger prefrontal volume is associated with better executive function. k = number of effect sizes included in the analysis; N = cumulative sample size across studies; se = standard error of weighted mean; CI = confidence interval.