Table 2.

The relation between clinicopathological parameters and pre-treatment red cell distribution width levels of patients with laryngeal squamous cell cancer.

	RDW quartiles
	≤12.9% (n = 242)	12.9 −13.2% (n = 244)	13.2–13.5% (n = 179)	>13.5% (n = 144)	Chi-Square/t value	P-Value for Trend
Age (years)	60.42	60.89	60.60	60.58	0.094	0.963
	40–89	31–84	30–89	27–85
Death events	25	37	60	64	45.333	< 0.001
Duration of follow-up	78.84	73.87	69.81	64.84	7.393	< 0.001
	6–115	3–115	12–114	7–116
Smoking	178	174	121	92	0.826	0.363
Drinking	98	81	69	59	0.026	0.871
Hypertension	64	75	50	37	0.025	0.875
RBC	4.35	4.33	4.22	4.22	2.173	0.038
Hg	137.50	132.15	131.31	131.27	10.173	< 0.001
Radiotherapy	32	35	38	35	7.134	0.008
Chemotherapy	5	7	10	6	2.535	0.111
T STAGE
T1	37	77	40	41	3.434	0.064
T2	163	37	50	75	4.891	0.027
T3	24	126	79	8	0.084	0.772
T4	18	4	10	20	4.648	0.031
N STAGE
N0	242	214	130	132	1.420	0.233
N1	0	20	3	8	–	–
N2−3	0	10	46	4	–	–
TNM STAGE
I	37	77	40	41	3.434	0.064
II	163	27	39	71	8.069	0.005
III	24	129	53	8	0.769	0.380
IV	18	11	47	24	18.486	< 0.001
HISTOLOGICAL DIFFERENTIATION
Highly or moderately differentiated	207	199	149	115	0.145	0.703
Poorly differentiated	5	5	11	1	0.137	0.712
OPERATION THERAPY
Total laryngectomy	66	109	97	54	4.599	0.032
Partial laryngectomy	176	135	82	90	8.569	0.036

RDW, red cell distribution width; Hg, hemoglobin; WBC, white blood cell; RBC, red blood cell count; BMI, body mass index.