Table 3.

The results of the univariate analyses of factors predicting the survival rates

Variable	Pt. (n)	Overall survival rate		Progression-free survival rate		Local (in-field) control rate
		2-year (%)	P	2-year (%)	P	2-year (%)	P
Performance status
0–1	22	46	0.17	38	0.83	95	0.27
2	5	80		40		100
Tumor size
<3 cm	11	88	0.0013	64	0.016	100	0.41
≥3 cm	16	29		22		93
Irradiated lesion
One lesion	19	52	0.28	38	0.79	100	0.11
Two lesions	8	54		43		86
Period between start of first-line treatment and RT
<2 years	16	35	0.023	19	0.088	93	0.40
≥2 years	11	80		64		100
Total dose of radiation (BED, Gy10)
<72	13	49	0.72	51	0.11	92	0.68
≥72	14	57		26		100
Concurrent chemotherapy
Yes	6	0	0.31	NR	0.23	100	NR
No	21	57		42		95
Hyperthermia
Yes	7	0	0.89	NR	0.73	100	NR
No	20	56		42		95
Objective tumor response
CR	11	89	0.0044	67	0.013	100	0.079
PR or NC	16	28		21		93
Response to chemotherapy immediately before RT
PR	5	100	0.019	80	0.069	100	NR
NC or PD	15	47		34		100

BED = biologically effective dose; NR = not reached; CR = complete response; PR = partial response; NC = no change.