Table 2.

Relationship of preoperative platelet count with clinicopathological parameters

Variable	N	Platelet count	P value	Platelet count		P value
		Mean ± SD		Normal	Thrombocytosis
		(×109/L)		<300 × 109/L	≥300 × 109/L
Gender
Male	95	260.79 ± 96.13	0.127	72	23	0.029
Female	24	229.67 ± 47.93		23	1
Age
<60	59	254.86 ± 68.78	0.966	46	13	0.615
≥60	60	254.17 ± 106.22		49	11
Smoking history
Yes	71	267.39 ± 105.4	0.055	44	4	0.008
No	48	235.46 ± 53.23		51	20
Location
Upper	15	260.93 ± 82.51	0.696	12	3	0.964
Middle	67	248.36 ± 59.93		54	13
Lower	37	263.05 ± 129.3		29	8
Tumor length
<3.85 cm	64	250.18 ± 103.94	0.571	54	10	0.183
≥3.85 cm	55	259.54 ± 68.96		41	14
Differentiation
Well	33	263.39 ± 136.03	0.793	26	7	0.568
Moderate	51	250.04 ± 69.68		39	12
Poor	35	252.66 ± 54.62		30	5
Tumor stage
T1	18	207.56 ± 51.84	0.034	17	1	0.251
T2	26	247.58 ± 53.27		21	5
T3	67	263.66 ± 105.27		52	15
T4	8	306.13 ± 58.73		5	3
Lymph node status
Negative	75	250.89 ± 99.45	0.566	62	13	0.314
Positive	44	260.68 ± 69.14		33	11
Pathological stages
I	21	258.19 ± 168.65	0.233	17	4	0.636
II	58	246.48 ± 54.6		48	10
III	40	264.23 ± 70.43		30	10
Adjuvant treatment
None	71	259.69 ± 105.06	0.823	56	15	0.788
Radiotherapy	25	253.48 ± 65.68		20	5
Chemotherapy	11	235.55 ± 43.03		10	1
CRT	12	243.42 ± 58.82		9	3
Recurrence
Yes		251.44 ± 58.06	0.675	66	15	0.513
No		261.05 ± 134.37		29	9

SD, standard deviation; CRT, chemoradiotherapy. P < 0.05 is of significance.