. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: Contemp Clin Trials. 2008 Jun 6;29(6):878–886. doi: 10.1016/j.cct.2008.05.009

Table 4.

Logistic model results for TR and BM cell lines, allowing for hormesis ^a,^b

	ML estimates (standard errors in parentheses)						MSE
Cell line	C	f	α	β	σ	IC₅₀ (uM)	MSE
TR	0.977 (0.054)	0.0091 (0.0075)	−3.344 (0.363)	0.982 (0.086)	0.120 (0.018)	4.33 (0.40)	0.014
BM	1.699 (0.074)	0.0014 (0.0015)	−9.249 (0.821)	1.449 (0.071)	0.147 (0.020)	2.41 (0.39)	0.022

Results based on model (3.9); model (3.8) was fit to obtain estimate of β

Model fit to scaled [dose_i* = ln(1000×dose_i + 1)] data (see section 3.4)