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. 2018 Feb 7;9(17):13706–13712. doi: 10.18632/oncotarget.24448

Table 2. Multivariate analysis of the influence of experimental settings on clonogenic survival.

Parameter SF2 SF4 SF6 SF8 D10 D50
Radiation type* 0.63 0.49 0.57 0.47 0.95 0.34
Dose rate 0.50 0.24 0.69 0.53 0.95 0.77
Timing for cell seeding** 0.04 0.63 0.47 0.24 0.83 0.91

The influence of radiation type, dose rate, and timing of cell seeding on SF2, SF4, SF6, SF8, D10, or D50 was examined by multiple linear regression. P values are shown. *X-rays vs. γ-rays; **before irradiation vs. after irradiation.