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

Table 3 HCC recurrence rates in patients with and without P³²-GMS, n (%)

Postoperative intervals	Group A (n = 29)	Group B (n = 38)	P value
6 mo	4 (13.8)	15 (39.5)	P = 0.021a
1 yr	7 (24.1)	20 (52.6)	P = 0.018a
2 yr	13 (44.8)	29 (76.3)	P = 0.008b
3 yr	18 (62.1)	33 (86.8)	P = 0.018a
Over 3 yr	18 (62.1)	33 (86.8)	P = 0.018a

^aP < 0.05;

^bP < 0.01.