Adjuvant radiotherapy versus observation following gross total resection for atypical meningioma: a systematic review and meta-analysis

Table 3 Summary of the publication bias in each meta-analysis

Evaluation index		Egger’s linear regression test					Begg rank correlation
Evaluation index		Intercept	SE	95% CIs	t value	p value	Tau	z value	p value
LR	Overall	− 0.839	0.590	− 2.060 to 0.382	1.422	0.169	− 0.197	1.378	0.168
	1993/2000 WHO criteria	− 1.911	7.191	− 32.852 to 29.031	0.266	0.815	0	0	1.000
	2007/2016 WHO criteria	− 0.626	0.727	− 2.271 to 1.018	0.862	0.411	− 0.255	1.090	0.276
PFS	1-year	− 0.080	0.546	− 1.371 to 1.211	0.147	0.888	0.139	0.521	0.602
	3-year	− 0.794	0.675	− 2.298 to 0.710	1.177	0.267	− 0.076	0.343	0.732
	5-year	− 0.791	0.815	− 2.607 to 1.024	0.971	0.354	− 0.106	0.480	0.631
	> 5-year	− 1.094	0.662	− 2.570 to 0.382	1.652	0.130	− 0.409	1.851	0.064
OS	1-year	− 0.519	1.114	− 5.314 to 4.276	0.466	0.687	− 0.167	0.340	0.734
	3-year	− 0.668	0.969	− 3.752 to 2.416	0.689	0.540	− 0.100	0.245	0.807
	5-year	− 0.737	0.588	− 2.371 to 0.896	1.253	0.279	− 0.400	1.127	0.260
	> 5-year	0.026	0.338	− 0.913 to 0.965	0.077	0.942	− 0.267	0.751	0.452

LR, local recurrence; PFS, progression-free survival; OS, overall survival; WHO, World Health Organization; SE, standard error; CIs, confidence intervals

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