Table 1 Correlation analysis of YAP1 promoter methylation with different variables

 ≤ 50

31 (62)

12 (38.7)

19 (61.3)

χ² = 1.688

0.194

 ˃ 50

19 (38)

4 (21.1)

15 (78.9)

 ≤ 25

14 (28)

6 (42.9)

8 (57.1)

χ² = 1.053

^FEp = 0.330

 ˃ 25

36 (72)

10 (27.8)

26 (72.2)

 Premenopausal

17 (34)

4 (23.5)

13 (76.5)

χ² = 0.849

0.357

 Postmenopausal

33 (66)

12 (36.4)

21 (63.6)

 Ductal

34 (68)

12 (35.3)

22 (64.7)

χ² = 0.534

^MCp = 0.884

 Lobular

12 (24)

3 (25)

9 (75)

 Others

4 (8)

1 (25)

3 (75)

 I

χ² = 34.124*

< 0.001*

 II

18 (36)

15 (83.3)

3 (16.7)

 III

22 (44)

1 (4.5)

21 (95.5)

 IV

10 (20)

0 (0)

10 (100)

 ≤ 2 cm

3 (6)

2 (66.7)

1 (33.3)

χ² = 1.763

^FEp = 0.237

 > 2 cm

47 (94)

14 (29.8)

33 (70.2)

 Yes

47 (94)

14 (29.8)

33 (70.2)

χ² = 1.763

^FEp = 0.237

 No

3 (6)

2 (66.7)

1 (33.3)

 No

40 (80)

16 (40)

24 (60)

 Positive

42 (84)

13 (31)

29 (69)

χ² = 0.132

^FEp = 0.699

 Negative

8 (16)

3 (37.5)

5 (62.5)

 Positive

43 (86)

14 (32.6)

29 (67.4)

χ² = 0.044

^FEp = 1.000

 Negative

7 (14)

2 (28.6)

5 (71.4)

 Overexpression

16 (32)

2 (12.5)

14 (87.5)

χ² = 4.112*

0.043*

 Non-overexpression

34 (68)

14 (41.2)

20 (58.5)

 Mean ± SD

37.49 ± 28.17

28.78 ± 12.94

41.59 ± 32.37

t = 1.520

0.135

 Median (min–max)

34 (11–190)