Table 4.

Univariate analysis for predictors of overall survival

	p-value
Diagnosis
Cholangiocarcinoma vs. HCC	0.832
Neuroendocrine liver metastasis vs. HCC	0.863
Age (yr)
≥65 vs. <65	0.511
Sex	0.888
Male vs. female
Child–Pugh classification	0.358
B vs. A
Dose fractionation
30–35 Gy vs. <30 Gy in 5 fx	0.915
40–45 Gy vs. <30 Gy in 5 fx	0.819
50+ Gy vs. <30 Gy in 5 fx	0.781
PTV volume (mL)
50–100 vs. <50	0.866
100–250 vs. <50	0.736
250–500 vs. <50	0.607
500+ vs. <50	0.429
Treatment response
Responders (SD+PR+CR) vs. non-responders (PD)	0.001

HCC, hepatocellular carcinoma; PTV, planning target volume; CR, complete response; PR, partial response; SD, stable disease; PD, progressive disease.