Table 7.

Influence of the Irradiation Range, Surgical Bed Volume and Volume of the Elective Area in T Stages on OS, CSS, RFS and LRFS

Tumor Stage		T1		T2		T3		T4
Test Log-Rank		χ2 Test-Value	p-value	χ2 Test-Value	p-value	χ2 Test-Value	p-value	χ2 Test-Value	p-value
Irradiation area vs:	OS	−4.432	0.218	−1.082	0.781	−6.177	0.103	−3.043	0.385
	CSS	−9.2	0.026	−3.604	0.307	−5.831	0.12	−3.647	0.302
	RFS	−5.373	0.146	−1.918	0.589	−5.479	0.14	−3.102	0.376
	LRFS	−4.697	0.195	−3.306	0.307	−2.444	0.485	−0.361	0.948
Tumor bed volume vs:	OS	0.423	0.672	−0.436	0.803	−0.984	0.611	−0.992	0.609
	CSS	0	1	−1.219	0.543	−0.448	0.799	−0.073	0.963
	RFS	0.671	0.501	−1.154	0.561	−0.48	0.786	−0.258	0.878
	LRFS	0.461	0.644	−4.453	0.107	−1.304	0.52	−1.428	0.489
Elective area volume vs:	OS	0.338	0.734	−5.265	0.071	−5.032	0.284	−0.603	0.962
	CSS	0	1	−1.249	0.535	−1.582	0.52	−2.668	0.615
	RFS	−2.12	0.033	−2.157	0.339	−0.218	0.994	−3.866	0.962
	LRFS	−2.287	0.022	−2.987	0.224	−0.397	0.982	−11.434	0.022

Note: Statistically significant results in bold.

Abbreviations: p, significance level; χ², chi square test; OS, overall survival; CSS, cancer-specific survival; RFS, relapse-free survival; LRFS, local relapse-free survival; T, tumor.