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Table 4 Mean ± mean standard error of parameters obtained from fitting of TGK1 for female groups

From: Efficacy of direct current generated by multiple-electrode arrays on F3II mammary carcinoma: experiment and mathematical modeling

ParametersExperimental groups
CG1-FCG2-FTG1-FTG2-FTG3-FTG4-FTG5-FTG6-F
α (days−1)0.462 ± 0.0440.490 ± 0.1890.462 ± 0.0440.490 ± 0.1890.490 ± 0.1890.490 ± 0.1890.490 ± 0.1890.490 ± 0.189
α* (days−1)0.167 ± 0.0190.300 ± 0.0570.224 ± 0.0330.197 ± 0.0270.206 ± 0.0140.187 ± 0.049
β (days−1)0.024 ± 0.0260.013 ± 0.0600.009 ± 0.0050.055 ± 0.0290.026 ± 0.0140.023 ± 0.0040.001 ± 0.0010.016 ± 0.016
eα (days−1)0.011 ± 0.0030.008 ± 0.0700.098 ± 0.0750.073 ± 0.0610.012 ± 0.0050.015 ± 0.0070.089 ± 0.0570.037 ± 0.016
eβ (days−1)0.003 ± 0,000*0.007 ± 0.0020.006 ± 0.0010.051 ± 0.0060.001 ± 0.000**0.008 ± 0.0010.009 ± 0.0030.015 ± 0.001
SSE (cm3)0.016 ± 0.0070.011 ± 0.0020.113 ± 0.0320.154 ± 0.0510.613 ± 0.4930.222 ± 0.1070.079 ± 0.0260.712 ± 0.248
SE (cm3)0.019 ± 0.0050.017 ± 0.0010.026 ± 0.0030.029 ± 0.0050.048 ± 0.0240.033 ± 0.0090.022 ± 0.0040.061 ± 0.015
\(r_{a}^{2}\)0.994 ± 0.0020.964 ± 0.0150.977 ± 0.0060.956 ± 0.0070.980 ± 0.0100.938 ± 0.0380.964 ± 0.0190.958 ± 0.013
PRESS (cm3)0.001 ± 0.0010.002 ± 0.0010.012 ± 0.0030.018 ± 0.0060.029 ± 0.0180.035 ± 0.0220.016 ± 0.0120.149 ± 0.063
MPRESS (cm3)0.001 ± 0.0010.002 ± 0.0010.012 ± 0.0030.018 ± 0.0060.029 ± 0.0180.035 ± 0.0230.016 ± 0.0120.151 ± 0.064
RMSE (cm3)0.018 ± 0.0050.017 ± 0.0020.026 ± 0.0030.029 ± 0.0050.048 ± 0.0240.032 ± 0.0090.022 ± 0.0040.060 ± 0.015
Dmax (cm3)0.034 ± 0.0100.038 ± 0.0100.054 ± 0.0080.059 ± 0.0110.110 ± 0.0470.074 ± 0.0230.054 ± 0.0040.118 ± 0.031
  1. *0.0031 ± 0.0002,**0.0012 ± 0.0001. TGK1 was the first part of the unperturbed and direct current perturbed F3II tumor growth kinetic. The variable α was the intrinsic growth rate of the tumor and eα its estimation error. The variable β was the growth decelation factor and eβ its estimation error. The maximum distance, root means square error, sum of squares of errors, standard error of the estimate, adjusted goodness-of-fit coefficient of multiple determination, predicted residual error sum of squares and multiple predicted residual sum error of squares parameters were represented by Dmax, RMSE, SSE, SE, \(r_{a}^{2}\), PRESS and MPRESS (for m = 3), respectively. Legends of CG1-F, CG2-F, TG1-F, TG2-F, TG3-F, TG4-F, TG5-F and TG6-F were defined in Experiment subsection