TABLE 2.

Subgroup analysis of tumor classification.

Outcome	Subgroup	Study number	Sample size	RR (95%CI)	p-value	Heterogeneity
						I2 (%)	p-value
Disease recurrence	Overall	9	6445	0.85 (0.74–0.96)	0.01	42	0.09
	Tumor classification
	Solid cancer	6	5156	0.88 (0.78–0.99)	0.04	31	0.2
	Hematology malignancy	3	1289	0.70 (0.48–1.02)	0.06	55	0.11
Clinical response	Overall	13	2640	1.24 (1.03–1.49)	0.02	63	0.001
	Tumor classification
	Solid cancer	8	1146	1.56 (1.03–2.36)	0.04	75	0.0002
	Hematology malignancy	5	1494	1.09 (0.98–1.21)	0.11	0	0.87
Overall survival	Overall	14	9521	0.98 (0.95–1.01)	0.23	18	0.26
	Tumor classification
	Solid cancer	12	9139	0.98 (0.95–1.02)	0.3	23	0.22
	Hematology malignancy	2	382	1.02 (0.42–2.47)	0.96	15	0.28