Clinicopathological predictors of right para esophageal lymph node metastasis in papillary thyroid carcinoma: A systematic review and meta-analysis

Table 1 Study characteristics

Ref.	Year	Country	Study design	Metastasis (+)	Metastasis (-)	Total	RPELNM prevalence (%)	Quality
Yang et al[7]	2023	China	Retrospective cohort study	24	378	402	0.0597	8
Shao et al[8]	2024	China	Retrospective cohort study	45	206	251	0.1792	6
Qu et al[14]	2017	China	Retrospective cohort study	20	143	163	0.1226	7
Liu et al[20]	2017	China	Prospective cohort study	16	129	145	0.1103	8
Lu et al[21]	2021	China	Retrospective cohort study	79	403	482	0.1639	7
Zhu et al[22]	2019	China	Retrospective cohort study	111	481	592	0.1875	8
Lee et al[23]	2009	Korea	Retrospective cohort study	14	109	123	0.1138	7
Bae et al[24]	2012	Korea	Retrospective cohort study	45	324	369	0.1219	8
Kim et al[25]	2012	Korea	Prospective cohort study	14	229	243	0.0576	8
Ito et al[26]	2013	Japan	Retrospective cohort study	127	795	922	0.1377	7
Pinyi et al[27]	2014	China	Retrospective cohort study	108	297	405	0.2666	7
Chang et al[28]	2015	Korea	Retrospective cohort study	148	5408	5556	0.0266	6
Zhang et al[29]	2016	China	Retrospective cohort study	33	213	246	0.1341	7
Luo et al[30]	2017	China	Prospective cohort study	51	255	306	0.1666	9
Park et al[31]	2017	Korea	Retrospective cohort study	171	936	1107	0.1544	8
Yuan et al[32]	2017	China	Retrospective cohort study	31	50	81	0.3827	7
Luo et al[33]	2018	China	Prospective cohort study	102	493	595	0.1714	9
Yu et al[34]	2018	China	Retrospective cohort study	158	671	829	0.1905	7
Hou et al[35]	2020	China	Retrospective cohort study	96	331	427	0.2248	6
Zou et al[36]	2020	China	Retrospective cohort study	127	352	479	0.2651	7
Ling et al[37]	2021	China	Retrospective cohort study	30	159	189	0.1587	8
Xiao et al[38]	2022	China	Retrospective cohort study	65	225	290	0.2241	8
Zhang et al[39]	2022	China	Retrospective cohort study	49	641	690	0.071	7
Zhou et al[40]	2022	China	Retrospective cohort study	291	271	562	0.5177	7
Gong et al[41]	2023	China	Retrospective cohort study	96	307	403	0.2382	6
Shen et al[42]	2023	China	Retrospective cohort study	82	488	570	0.1438	7

RPELNM: Right paraesophageal lymph node metastasis.