Comprehensive analysis of prognostic value and immunotherapy prospect of brain cytoplasmic RNA1 in hepatocellular carcinoma

Table 1 Characteristics of studies included in the meta-analysis

Ref.	Country	Sample size (high/low)	Sample	Survival analysis	Detection method	Cutoff value	Source of HR values	HR and 95%CI	Follow-up time	NOS score
Ming et al[28], 2019	China	55 (27/28)	Tissue	OS	qRT-PCR	Median	Survival curves	2.13 (0.77, 5.93)	50 mo	7
Lin et al[48], 2018	China	240	Tissue	OS	qRT-PCR	Mean	Survival curves	1.62 (1.01, 2.59)	80 mo	8
Liu et al[47], 2022	China	100 (50/50)	Tissue	OS	qRT-PCR	NR	Survival curves	1.56 (0.78, 3.14)	120 mo	7

HR: Hazard ratio; qRT-PCR: Quantitative real time polymerase chain reaction; OS: Overall survival; NR: Not reported; NOS: Newcastle-Ottawa scale.