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. Author manuscript; available in PMC: 2013 Nov 14.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2011 Jul 15;82(5):10.1016/j.ijrobp.2011.04.005. doi: 10.1016/j.ijrobp.2011.04.005

Table 2.

Dose by Era

Yr
Treatment		 N Dose level (Gy)
< 75 75-79.9 ≥ 80 Median Range
n (%) n (%) n (%)
1988-1992 21 15 (71) 6 (29) 0 (0) 72.0 69.6-79.0
1993-1997 79 33 (42) 44 (56) 2 (3) 75.8 69.5-80.0
1998-2002 126 2 (2) 10 (8) 114 (90) 82.0 73.7-84.2

Median doses differ significantly, p<0.001 Kruskal Wallis test