Table 2. Results of subgroup analyses of pooled HRs for OS with elevated MALAT-1 expression.

Categories	Number of studies	Number of patients	Pooled HR (95% CI)	Heterogeneity
				I2 (%)	P-value
Cancer type
Mixed	4	891	2.57 (1.71, 3.85)	0.4	0.834
TNBC	2	182	1.88 (1.45, 2.44)	0	0.39
Sample size
≥100	4	944	2.00 (1.59, 2.51)	22.2	0.277
<100	2	128	2.85 (1.35, 6.04)	0	0.923
Analysis method
Univariate	4	386	2.55 (1.83, 3.55)	0	0.988
Multivariate	2	687	1.75 (1.31, 2.34)	43.4	0.184