Preventive effect of regional radiotherapy with phosphorus-32 glass microspheres in hepatocellular carcinoma recurrence after hepatectomy

Table 4 Survival rates in patients with and without P³²-GMS, n (%)

Postoperative intervals	Group A (n = 29)	Group B (n = 38)	P value
6 mo	28 (96.6)	35 (92.1)	P = 0.454
1 yr	27 (79.3)	27 (71.1)	P = 0.024a
2 yr	22 (75.9)	17 (44.7)	P = 0.010b
3 yr	19 (65.5)	8 (21.1)	P = 0.000b
Over 3 yr	14 (48.3)	8 (21.1)	P = 0.018a

^aP < 0.05;

^bP < 0.01.