[Retracted] A Retrospective Cohort Study of the Efficacy, Safety, and Clinical Value of 6-TG versus 6-MP Maintenance Therapy in Children with Acute Lymphoblastic Leukemia

Table 3

Comparison of the incidence of secondary malignant tumor events and hepatic veno-occlusive disease .

Grouping		Incidence of secondary malignant tumor events	Incidence of hepatic vein occlusive disease
Control group	251	4 (1.59)	6 (2.39)
Research group	233	2 (0.85)	17 (7.29)
		0.533	6.424
		0.465	0.011