Table 1.

Relationship between CDK5RAP3 expression and baseline characteristics of patients.

Variables	Total	CDK5RAP3 expression
		Low	High	χ2	P
Gender				0.397	0.529
Male	180	93	87
Female	61	28	33
Age at surgery (years)				0.359	0.549
>65	100	53	47
≤65	141	68	73
BMI				0.451	0.502
≤25	202	22	17
>25	39	99	103
Tumour size (mm)				1.198	0.274
>45	122	66	56
≤45	119	55	64
Location of primary tumour				3.869	0.276
Lower 1/3	113	59	54
Middle 1/3	39	18	21
Upper 1/3	57	24	33
More than 1/3	32	20	12
Chemotherapy				1.589	0.207
No	97	54	43
Yes	144	67	77
Degree of differentiation				8.854	0.003
Well/moderate	74	26	48
Poor and not	167	95	72
Depth of invasion				0.748	0.862
T1	31	15	16
T2	23	11	12
T3	99	53	46
T4	88	42	46
Lymph node metastasis				4.1450	0.246
N0	63	32	31
N1	41	15	26
N2	51	26	25
N3	86	48	38
TNM stage				2.297	0.317
I	39	21	18
II	62	26	36
III	140	74	66

P < 0.05 marked in bold font shows statistical significance.

An IHC scores of 4 points were used to stratify tumours with low versus high CDK5RAP3 expression.