Table 3. Synthesis of data extracted from the included studies related to outcomes pooled in the meta-analysis.

HOTAIR expression
Study	High with LNM	Low with LNM	High with high grade	Low with high grade	High with high staging	Low with high staging	High expression	Low expression	HR statistic	Hazard ratios (95% CI)
Li	NA	NA	NA	NA	NA	NA	33	39	Survival curve and data in paper	2,41–2,856
Wu	14	8	7	5	14	6	25	25	Survival curve	2.3
Wu	26	8	9	3	29	15	38	38	Survival curve	2.39
Xu	20	6	NA	NA	12	7	52	21	Survival curve	1.51
Total	136	80	24	11	106	54	239	192