Table 2.

Publication bias by Begg’s and Egger’s tests (P-value)

	Begg’s test	Egger’s test
Overall survival	0.14	0.37
Progression-free survival	0.14	0.08
Objective response rate	0.22	0.10
Fatal adverse event	0.08	0.23
Treatment discontinue	0.62	0.27
Any severe adverse events	0.05	0.04