Table 6.

Correlation of RDW and other parameters in defining disease activity based on the cut-off values calculated using the Youden index

		RDW<16.65 (n=216)		RDW≥16.65 (n=94)		Total	p
		n	%	n	%	n
CRP	<0.85	136	62.9	40	42.5	176	0.001
	≥0.85	80	37.1	54	57.5	134
ESR	<15.5	202	93.5	87	92.5	289	0.756
	≥15.5	14	6.5	7	7.5	21
WBC	<10050	164	75.9	53	56.4	217	0.001
	≥10050	52	24.1	41	43.6	93
PLT	<321.5	132	61.1	29	30.9	161	<0.001
	≥321.5	84	38.9	65	69.1	149