Neutrophil to Lymphocyte Ratio and Platelet to Lymphocyte Ratio in Poststroke Depression: A Systematic Review and Meta-Analysis

Table 1

Characteristics of studies included in the meta-analysis.

First author	Study year	Country	Age group (years)	Language	Stroke type	Follow-up period (month)	Depression assessment tool	Sample size		NLR		PLR		NOS score
								PSD	NPSD	PSD	NPSD	PSD	NPSD
Chen et al.	2016	China	18-80	English	ND	1	HAMD	78	221			—	—	7
Stern et al.	2017	USA	≥18	English	ICH/IVH	12	HDRS	13	76			—	—	7
Wang et al.	2017	China	18-80	English	ND	1	HAMD	45	107			—	—	8
Quiqian et al.	2019	China	ND	English	AIS	1	HAMD	77	286	—	—			8
Gong et al.	2020	China	≥18	English	ICH	3	HAMD	107	265			—	—	8
Hu et al.	2020	China	ND	English	AIS	6	HAMD	104	272					8
Xia et al.	2020	China	42-80	Chinese	AIS	3	HAMD	40	70			—	—	8
Hu et al.	2021	China	18-80	English	AIS	1	HAMD	129	303					6

PSD: poststroke depression; NPSD: nonpoststroke depression; NLR: neutrophil to lymphocyte ratio; PLR: platelet to lymphocyte ratio; ND: not declared; HAMD: Hamilton Depression Scale; HDRS: Hamilton Depression Rating Scale; HADS: the hospital anxiety and depression scale; AIS: acute ischemic stroke; ICH: hemorrhagic stroke; IVH: intraventricular hemorrhage; NOS: Newcastle-Ottawa scale.