Table 6. Stratified analysis of the relationship between microRNA 27a rs895818 and overall survival.

Model	Subgroup	No. of studies	No. of patients	HR (95% CI)	P- value
CT vs TT	NSCLC	3	1590	1.298 (1.125, 1.498)	< 0.001
CC vs TT	NSCLC	3	1590	1.457 (1.187, 1.787)	< 0.001
	GC	2	1613	1.260 (1.004, 1.583)	0.046
CT + CC vs TT	NSCLC	3	1590	1.364 (1.177, 1.581)	< 0.001
CC vs CT + TT	NSCLC	2	1014	1.247 (1.010, 1.539)	0.040

NSCLC: non-small cell lung cancer, GC: gastric cancer.