. 2018 Dec 20;131(24):2947–2952. doi: 10.4103/0366-6999.247211

Table 1.

Relationships between PAI-1 expression and clinicopathologic variables of resectable PDAC

Variables	n	PAI-1 expression, n		χ²	P

		High	Low
Gender
Male	58	30	28	0.001	0.978
Female	35	17	18	0.001	0.978
Age (years)
≥62	47	24	23	0.011	0.915
<62	46	24	22	0.011	0.915
Tumor site
Head	57	30	27	0.061	0.805
Nonhead	36	18	18	0.061	0.805
Tumor size (cm)
>4	54	27	27	0.016	0.899
≤4	37	19	18	0.016	0.899
Histological grade
G1–G2	64	33	31	<0.001	0.988
G3–G4	29	15	14	<0.001	0.988
T stage
T1–T2	71	39	32	2.479	0.115
T3	20	7	13	2.479	0.115
N stage
N0	51	21	30	3.903	0.048
N1	35	22	13

Partial data were not available, and statistics were based on available data. P values were derived from the Pearson’s Chi-square test (two tailed). PAI-1: Plasminogen activator inhibitor 1; PDAC: Pancreatic ductal adenocarcinoma; G1: Well differentiated; G2: Moderately differentiated; G3: Poorly differentiated; G4: Undifferentiated; T: Tumor; N: Lymph node.