Journal of Experimental & Clinical Cancer Research

Table 1 Association between DDR1 expression and clinicopathologic features in patients with PDAC

From: High expression of DDR1 is associated with the poor prognosis in Chinese patients with pancreatic ductal adenocarcinoma

		DDR1 Expression
Characteristics		High	Low	P value
	Total	(n = 126)	(n = 79)	(χ2 test)
Age (years)
Mean (years)	65.19	66.82	62.69	0.374
< 65	107	65	42	0.826
≥ 65	98	61	37
Gender				0.891
Male	117	74	43
Female	88	52	36
Tumor location				0.273
Head	139	89	50
Body/tail	66	37	29
Size				0.551
≤ 2 cm	27	18	9
> 2 cm	178	108	70
Tumor differentiation				0.054
Well	11	10	1
Moderate/poor	194	116	78
T classification				0.697
T1	11	8	3
T2	31	18	13
T3	125	73	52
T4	38	20	18
N classification				0.858
Absent	136	83	53
Present	69	43	26
AJCC stage				0.949
Stage I	38	20	18
Stage II	135	73	62
Stage III	21	10	11
Stage IV	14	7	7
Liver metastasis				0.560
Absent	191	118	73
Present	14	8	6
Vascular invasion				0.801
Absent	177	109	68
Present	28	17	11
Vital status				0.912
Dead	172	106	66
Alive	33	20	13

AJCC staging is according to the 7^th edition of the American Joint Committee on Cancer (AJCC) staging system [29]

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ISSN: 1756-9966

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