Table 1. The relationship between YAP expression in pancreatic cancer tissue strength and clinical pathological factors.

	Negative	Weakly positive	Moderately positive	Strongly positive	χ2	P
Gender					0.643	0.577
Male	2	3	5	10
Female	1	2	10	12
Age					0.787	0.565
> 60	1	4	8	13
< 60	2	1	7	9
Smoking					1.452	0.541
Yes	3	4	9	15
No	0	1	6	7
Drinking					1.896	0.224
Yes	1	3	11	16
No	2	2	4	6
BMI					0.000	1.000
BMI > 27	2	4	9	15
BMI < 27	1	1	6	7
Abnormal glucose tolerance					1.773	0.542
Yes	3	3	9	14
No	0	2	6	8
Diabetes					0.952	0.555
Yes	1	2	8	16
No	2	3	7	6
Chronic pancreatitis					0.643	0.577
Yes	2	2	6	10
No	1	3	9	12
Differentiation					5.294	0.048*
Poorly	0	1	11	16
Medium and high	3	4	4	6
T stages					2.143	0.543
T1	2	1	3	9
T2	1	2	6	6
T3	0	2	5	6
T4	0	0	1	1
N stages					0.592	1.000
N0	3	3	13	19
N1	0	2	2	3
Clinical stages					0.153	0.926
I	2	3	11	12
II	1	2	4	8
III	0	0	0	2

^*Statistically significant

Elevated YAP activity/expression strongly correlated with tumor histological differentiation in pancreatic cancer tissue (χ² = 5.294, p = 0.048).