Table 2.

Reference values for the inflammatory markers.

			NLR	PLR	SII
General Population		mean	1.76	120	459
		2.5% limit	0.83	61	189
		97.5% limit	3.92	239	1168
Sex	Male	mean	1.88	112	453
		2.5% limit	0.88	57	185
		97.5% limit	4.14	230	1168
	Female	mean	1.68	126	463
		2.5% limit	0.80	65	194
		97.5% limit	3.80	246	1169
Age category (years)	45–54	mean	1.63	118	456
		2.5% limit	0.80	62	189
		97.5% limit	3.44	211	1063
	55–64	mean	1.61	116	436
		2.5% limit	0.79	60	186
		97.5% limit	3.53	226	1109
	65–74	mean	1.82	119	455
		2.5% limit	0.86	60	186
		97.5% limit	3.92	239	1131
	75–84	mean	2.02	127	500
		2.5% limit	0.96	61	196
		97.5% limit	4.53	268	1373
	≥85	mean	2.13	131	522
		2.5% limit	0.89	63	205
		97.5% limit	5.86	282	1798

NLR = neutrophil-to-lymphocyte ratio = absolute peripheral granulocyte count (×10⁹/L)/absolute lymphocyte count (×10⁹/L).

PLR = platelet-to-lymphocyte ratio = absolute peripheral platelets count (×10⁹/L)/absolute peripheral lymphocyte count (×10⁹/L).

SII = systemic immune-inflammation index = absolute peripheral granulocyte count (×10⁹/L)/absolute lymphocyte count (×10⁹/L). *absolute peripheral platelets count (×10⁹/L).