Table 5 Univariate analysis and the subsequent multivariate linear regression models of the influential variables on the MN and NPB yields after 21.6 Gy and after 50.4 Gy of RCT
|  | After 21.6 Gy RCT | After 50.4 Gy RCT | ||
|---|---|---|---|---|
Univariate | Multivariate | Univariate | Multivariate | |
p-value | p-value | p-value | p-value | |
MN yields | ||||
 PTVs [cm3] | 0.15 | 0.04 | 0.002 | 9.4 × 10−5 |
 Gender | 0.015 | 0.01 | 0.017 | 0.001 |
 MN/BNL after 3 Gy in vitro | 0.006 | 0.01 | 1.1 × 10− 4 | 5.3 × 10−5 |
NPB yields | ||||
 PTVs [cm3] | 0.053 | 0.242 | 0.001 | 0.116 |
 Gender | 0.015 | 0.007 | 0.054 | 0.011 |
 NPB/BNL after 3Gy in vitro | 0.116 | 6 × 10−10 | 1.0 × 10−5 | 6.2 × 10− 7 |