Role of the Neutrophil to Lymphocyte Ratio in Guillain Barré Syndrome: A Systematic Review and Meta-Analysis

Table 1

General characteristics of studies included in the meta-analysis.

First author	Year	Design	Region	Age group	Comparison between cases and controls					Comparison between GBS types								Comparison between GBS cases with good and bad outcome				Comparison between GBS cases with and without mechanical ventilation				NOS score
					Healthy control		GBS cases
										AIDP type		Axonal type						Good outcome		Bad outcome		MV		Non-MV
												AMAN		AMSAN		Total
						NLR		Pretreatment NLR	Posttreatment NLR		NLR		NLR		NLR		NLR		NLR		NLR		NLR		NLR
Geyik	2016	R	Turkey	Adult	101		94			64		16		14		30		78		16		—	—	—	—	6
Ozdemir	2016	R	Turkey	Adult	—	—	62	—	—	35		12		15		27			—	—	—	—	—	—	—	8
Ethemoglu	2018	R	Turkey	Adult and children	63		68			40		—	—	—	—	28		15		53		—	—	—	—	5
Huang	2018	R	China	Adult	217		117		—	—	—	—	_	—	—	—	—	—	—	—	—	—	—	—	—	6
Huner	2018	R	Turkey	Children	—	—	27			—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	8
Bedel	2019	R	Turkey	Adult	101		98		—	59		—	—	—	—	39		—	—	—	—	—	—	—	—	6
Ning	2019	R	China	Adult	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	74		352		6
Hashim	2020	P	Egypt	Adult	40		35			18		7		10		17		26		9		—	—	—	—	6
Tiwari	2020	P	India	Children	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	9		37		7
Cheng	2022	R	China	Adult	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	30		204		7

AIDP: acute inflammatory demyelinating polyradiculoneuropathy; AMAN: acute motor axonal neuropathy; AMSAN: acute motor-sensory axonal neuropathy; R: retrospective; P: prospective; NLR: neutrophil to lymphocyte ratio; MV: mechanical ventilation.