Table 5.

Variations in normal tissue complication probability (NTCP) from random (r-errors) and systematic errors (s-errors) in the rectum for patients who had undergone prostatectomy and for those with intact prostate, based on the phenomenological logistic model

NTCP of prostatectomy patients (Gtectomy) – rectum (%)
	Patient/simulation	A	B	C	D	E	F	G	H
r-errors	DLGref	2.64	4.40	4.44	4.81	5.54	5.01	6.23	5.98
	DLG+1+1	3.26	4.88	5.27	5.30	6.77	5.82	6.84	6.48
	DLG+1–1	2.34	3.74	4.05	3.74	5.19	4.56	5.56	5.10
	DLG−1+1	3.17	4.79	5.22	5.31	6.72	5.83	6.92	6.50
	DLG−1–1	2.25	3.72	4.02	4.12	5.14	4.57	5.62	5.13
	Maximum variationa	–14.70	–15.60	–9.46	–22.15	–7.08	–8.86	–10.84	–14.64
		23.76	10.82	18.71	10.38	22.39	16.46	11.04	8.81
s-errors	MLC−1-1	0.89	1.70	1.38	1.89	2.16	1.80	2.17	2.06
	MLC+1+1	5.79	9.26	10.69	9.51	11.49	10.92	14.82	12.93
	Maximum variation	–66.09	–61.36	–68.81	–60.62	–61.03	–64.07	–65.16	–65.54
		119.88	110.14	140.78	97.88	107.59	118.15	137.79	116.32
NTCP of intact prostate patients (Gintact) – rectum (%)
	Patient/Simulation	I	J	K	L	M
r-errors	DLGref	8.37	7.40	15.03	11.90	15.38
	DLG+1+1	9.07	8.17	16.75	14.16	16.49
	DLG+1–1	6.40	5.89	13.86	10.99	13.05
	DLG−1+1	9.07	5.76	16.74	13.98	16.19
	DLG−1–1	6.57	5.76	13.86	10.83	12.76
	Maximum variation	–23.51	–22.11	–7.82	–8.96	–17.03
		8.46	10.38	11.37	19.01	7.21
s-errors	MLC−1–1	2.20	4.81	8.32	3.48	5.68
	MLC+1+1	19.60	10.86	21.90	25.21	27.87
	Maximum variation	–73.74	–35.03	–44.66	–70.77	–63.05
		134.28	46.73	45.65	111.86	81.17

^aMaximum variation: maximum error that is negative and positive difference.