Association of neutrophil-lymphocyte ratio with all-cause and cardiovascular mortality in peritoneal dialysis patients: A systematic review and meta-analysis

Table 2 Baseline characteristics of population from included studies- demographics, n (%)

Ref.	Study type	Country	Duration in years (n)	Follow up in years (n)	Sample size (n)	Age in years (mean ± SD)	Males	Body mass index (kg/m2) (mean ± SD)
An et al[19]	P	China	2	4	138	53 ± 17	81 (58.7)	21.9 ± 2.7
Liu et al[18]	R	China	7	9	1778	47.4 ± 15.6	1058 (59.5)	21.5 ± 3.0
Zeng et al[17]	R	China	7.5	3	1502	51 ± 15.5a	852 (56.7)a	22.1 ± 3.04
Zhang et al[16]	P	China	5.4	2.4	140	54.7 ± 15.7a	84 (57.1)	23.47 ± 3.7
Xu et al[15]	P	China	15	N/A	378	N/A	N/A	N/A
Lau et al[14]	R	China	2	1	225	59 ± 12.3	129 (57.3)	N/A
Liu[13]	R	China	1	N/A	189	N/A	N/A	N/A

^aP value < 0.05.

N/A: Not applicable; P: Prospective; R: Retrospective.