Table 2.

Power and confidence limits

Power
r	n	Delta	Alpha
0.4	50	2.8	80%
Confidence limits				Neocortex							WM	CG
				Neurons	Astro	Oligo	Micro	Volume	Surface	Thickness	Volume	Volume
Pearson correlation IQ with				−0.05	0.01	0.04	0.01	−0.04	−0.12	0.11	−0.08	−0.001
Bootstrap, 95%			Lower	−0.33	−0.27	−0.23	−0.34	−0.32	−0.37	−0.17	−0.39	−0.25
confidence interval			Upper	0.24	0.27	0.28	0.17	0.22	0.15	0.38	0.22	0.28