Establishment of a prediction model for severe acute radiation enteritis associated with cervical cancer radiotherapy

Table 3 Organs at risk dose-volume comparison between adjuvant radiotherapy (n = 36) and radical radiotherapy (n = 14) after cervical cancer surgery (%)

OAR	Group	V20	V25	V30	V35	V40
Small intestine	Postoperative adjuvant radiotherapy group	77.41 ± 16.49	51.90 ± 10.99	39.51 ± 8.24	26.40 ± 5.50	19.25 ± 4.12
	Radical radiotherapy group	67.75 ± 14.10	50.11 ± 9.86	32.92 ± 7.91	25.18 ± 7.12	15.07 ± 4.65
	Z value	-2.377	-0.864	-2.701	-0.367	-3.003
	P value	0.017	0.387	0.007	0.713	0.003
Colon	Postoperative adjuvant radiotherapy group	100.00 ± 0.00	99.88 ± 0.73	98.26 ± 6.09	91.36 ± 11.67	75.64 ± 12.59
	Radical radiotherapy group	95.57 ± 16.59	95.34 ± 17.44	94.21 ± 21.66	91.09 ± 21.12	84.17 ± 7.94
	Z value	-1.604	-0.732	-0.332	-0.750	-2.247
	P value	0.109	0.464	0.740	0.453	0.025
Rectum	Postoperative adjuvant radiotherapy group	100.00 ± 0.00	100.00 ± 0.00	99.17 ± 2.90	95.63 ± 9.41	75.64 ± 12.59
	Radical radiotherapy group	100.00 ± 0.00	100.00 ± 0.00	100.00 ± 0.00	99.60 ± 1.48	84.17 ± 7.94
	Z value	0.000	0.000	-1.102	-1.745	-2.247
	P value	1.000	1.000	0.270	0.081	0.025
Bladder	Postoperative adjuvant radiotherapy group	70.87 ± 28.16	68.75 ± 24.41	47.18 ± 23.63	35.58 ± 16.04	27.33 ± 12.22
	Radical radiotherapy group	74.08 ± 27.93	71.94 ± 25.87	52.54 ± 28.93	40.40 ± 21.04	31.18 ± 16.28
	T-value	-0.354	-0.523	-0.519	-0.605	-0.627
	P value	0.723	0.601	0.604	0.545	0.531
Femoral head	Postoperative adjuvant radiotherapy group	48.55 ± 28.80	34.45 ± 22.27	24.73 ± 16.00	18.12 ± 11.68	12.23 ± 8.10
	Radical radiotherapy group	39.60 ± 19.76	27.13 ± 14.03	19.54 ± 10.07	14.42 ± 7.69	9.47 ± 5.37
	T-value	-0.951	-0.929	-0.994	-0.929	-0.983
	P value	0.342	0.353	0.320	0.353	0.326

OAR: Organs at risk.