Table 1. Correlation between Sp1, COX2 and clinicopathological features of PDAC patients.

Factors	N	Sp1			COX2
		Negative	Positive	P-value	Negative	Positive	P-value
Gender
Male	56	21	35	0.56	17	39	0.83
Female	32	14	18		9	23
Age
≤60	41	17	24	0.76	11	30	0.60
>60	47	18	29		15	32
T stage
≤T2	74	31	43	0.35	20	54	0.38
T3	14	4	10		6	8
N stage
N0	52	26	26	0.02*	20	32	0.03*
N1	36	9	27		6	30
Primary tumor location
Body and Tail	30	15	15	0.16	8	22	0.67
Head and Neck	58	20	38		18	40
Lymphovascular invasion
No	50	22	28	0.35	15	35	0.92
Yes	38	13	25		11	27
Nuclear grade
≤II	73	31	42	0.26	19	54	0.20
>II	15	4	11		7	8
Jaundice
No	62	28	34	0.11	20	42	0.39
Yes	26	7	19		6	20
Abdominal pain
No	39	14	25	0.51	15	24	0.10
Yes	49	21	28		11	38

Abbreviation: N, number; Sp1, specificity protein 1; COX2, cyclooxygenase-2. *P < 0.05 indicates a significant association among the variables.