. Author manuscript; available in PMC: 2012 Apr 1.

Published in final edited form as: J Magn Reson Imaging. 2011 Apr;33(4):808–816. doi: 10.1002/jmri.22517

Table 1. Comparison of histologic features of non-enhancing Grades 2 and 3 astrocytoma.

	AS2 (mean +/- SD)	AS3 (mean +/- SD)	p
Proliferation Index	1.3 +/- 1.5	3.0 +/- 1.5	0.03^*
Cell Density (cells/mm²)	1672 +/- 826	2236 +/- 993	0.08

statistically significant at p ≤ 0.05