Prognostic role of neutrophil-to-lymphocyte ratio in aortic disease: a meta-analysis of observational studies

Table 1 General characteristics of studies included in meta-analysis

References	Time	Study design	Country	Sample size	Mean age (year)	Gender, M/F	Patients	Experiment group	Control group	NOS (stars/ scores)
Ikenaga H [13]	2014	Case-control	Japan	172	70.2 ± 9.7	130/42	Aortic aneurysm	Aortic aneurysm group	Control group	6
King AH [14]	2020	Retrospective cohort	USA	108	75.5 ± 8.5	7830	Aortic aneurysm	High NLR	Low NLR	9
Vuruskan E [15]	2016	Case-control	Turkey	219	70.2 ± 11.8	155/64	Aortic aneurysm	Aortic aneurysm group	Control group	7
Oz K [16]	2017	Retrospective cohort	Turkey	57	54.6 ± 10.3	9/48	Aortic dissection	deceased	survived	8
Onuk T [17]	2015	Retrospective cohort	Turkey	200	58 ± 12.7	133/67	Aortic dissection	deceased	survived	8
Bedel C [18]	2020	Retrospective cohort	Turkey	96	63.7 ± 13.6	78/18	Aortic dissection	deceased	survived	8
Karakoyun S [19]	2015	Retrospective cohort	Turkey	35	55.9 ± 7.6	28/9	Aortic dissection	deceased	survived	8
Lafci G [20]	2014	Retrospective cohort	Turkey	104	55.3 ± 13.5	76/28	Aortic dissection	deceased	survived	8
Appleton ND [21]	2014	Retrospective cohort	United Kingdom	350	72.9 ± 7.9	175/75	Aortic aneurysm	High NLR	Low NLR	9
Aurelian SV [15]	2019	Retrospective cohort	France	255	68.3 ± 7.6	230/25	Aortic aneurysm	High NLR	Low NLR	8
Bath J [23]	2019	Retrospective cohort	USA	1908	72.2	1458/450	Aortic aneurysm	High NLR	Low NLR	7
Kordzadeh A [24]	2015	Retrospective cohort	United Kingdom	80	75	66/14	Aortic aneurysm	High NLR	Low NLR	8
Lareyre F [25]	2018	Retrospective cohort	France	75	71	57/16	Aortic aneurysm	High NLR	Low NLR	8
Kalkan ME [26]	2015	cross-sectional study	Turkey	184	53.1 ± 11.4	134/50	Aortic dissection	High NLR	Low NLR	10

M Male, F Female, NOS Newcastle-Ottawa Scale, NLR Neutrophil-to-lymphocyte ratio

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