Table 2.

The effect of high PVT1 expression on metastasis

Type of metastasis	Cohorts	Cases	P value of heterogeneity	Pooled OR	95% CI
TNM	37	8,128	<0.0001	1.46	1.29–1.65
LNM	11	1,130	0.001	2.77	1.65–4.66
DOI	6	498	0.007	4.32	1.99–9.36
DM	8	884	0.008	1.35	1.01–1.80
DIF	8	1,116	0.500	1.62	1.21–2.18
LI	4	543	0.130	1.48	1.02–2.15

Abbreviations: LNM, lymph node metastasis; DOI, depth of invasive; DM, distant metastasis; DIF, differentiation; LI, lymphatic invasion.