[Retracted] Dose Prediction Models Based on Geometric and Plan Optimization Parameter for Adjuvant Radiotherapy Planning Design in Cervical Cancer Radiotherapy

Table 4

Univariate and multivariate linear regression significance scores for prediction of the bladder dose.

Variables	Outcome	value	R^2	value	R^2
	variable	(univariate)	(univariate)	(multivariate)	(multivariate)
PTV volume	V30	0.039	0.113	0.869	0.997
	V35	0.038	0.114	0.976	0.997
	V40	0.036	0.117	0.936	0.997
	D2cc	0.006	0.215	0.167	0.467
Bladder volume	V30	0.088	0.068	N	N
	V35	0.032	0.123	0.351	0.997
	V40	0.028	0.13	0.403	0.997
	D2cc	0.631	0.027	N	N
OV of bladder	V30	0.099	0.062	N	N
	V35	0.015	0.165	N	N
	V40	0.001	0.288	N	N
	D2cc	0.002	0.26	N	N
OP of bladder	V30	0.002	0.266	<0.001	0.997
	V35	<0.001	0.57	<0.001	0.997
	V40	<0.001	0.83	<0.001	0.997
	D2cc	<0.001	0.447	<0.001	0.467
V30 of NOS bladder	V30	<0.001	0.83	<0.001	0.997
V35 of NOS bladder	V35	<0.001	0.754	<0.001	0.997
V40 of NOS bladder	V40	<0.001	0.69	<0.001	0.997
D2cc of NOS bladder	D2cc	0.861	0.035	N	N

^∗OV: the volume of the overlap of the OAR with the PTV; OP: the percentage volume of the overlap of the OAR; NOS bladder: the structure of the bladder outside the PTV; N indicated that this parameter did not participate in the multivariate linear regression analysis.