Table 6.

Results of Begg and Egger tests for publication bias

	Begg test		Egger test
	Z	P	t	P
CR	2.02	0.044	0.27	0.79
PR	0.29	0.773	−0.32	0.752
SD	1.48	0.138	−1.87	0.084
PD	1.88	0.06	−3.85	0.002
ORR	1.77	0.077	0.9	0.384
1-year OS	0.62	0.537	1.63	0.124
2-year OS	2.47	0.013	3.65	0.003
3-year OS	−0.12	1	0.11	0.915

CR, complete response; PR, partial response; SD, stable disease; PD, progressive disease; ORR, objective response rate; OS, overall survival.