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Table 4 Genotype and allele frequencies of the IL-1 Ra VNTR polymorphism between women with and without endometriosis

From: Polymorphisms of TNF-alpha (− 308), IL-1beta (+ 3954) and IL1-Ra (VNTR) are associated to severe stage of endometriosis in Mexican women: a case control study

IL-1Ra

n

Genotype n (%)

Allele frequency n (%)

*1*1

*1*2

*1*3

*1*4

*2*2

*1*3 + *1*4

*1*2 + *2*2

1

2

3

4

Women without endometriosis

186

90 (48.4)

55 (29.6)

10 (5.4)

8 (4.3)

23 (12.4)

18 (9.7)

78 (41.9)

253 (68.0)

101 (27.2)

10 (2.7)

8 (2.1)

Women with endometriosis

183

129 (70.5)

25 (13.7)

4 (2.2)

5 (2.7)

20 (10.9)

9 (4.9)

45 (24.6)1

292 (79.8)

65 (17.8)7

4 (1.1)

5 (1.3)

Stage I

63

45 (71.4)

6 (9.5)

2 (3.2)

1 (1.6)

9 (14.3)

3 (4.8)

15 (23.8)2

99 (78.6)

24 (19.0)8

2 (1.6)

1 (0.8)

Stage II

54

39 (72.2)

9 (16.7)

1 (1.8)

2 (3.7)

3 (5.6)

3 (5.6)

12 (22.2)3

90 (83.3)

15 (13.9)9

1 (0.9)

2 (1.9)

Stage I/II

117

84 (71.8)

15 (12.8)

3 (2.6)

3 (2.6)

12 (10.3)

6 (5.1)

27 (23.1)4

189 (80.8)

39 (16.7)10

3 (1.3)

3 (1.3)

Stage III

42

31 (73.8)

7 (16.7)

2 (4.8)

0 (0.0)

2 (4.7)

2 (4.8)

9 (21.4)5

71 (84.5)

11 (13.1)11

2 (1.2)

0 (0.0)

Stage IV

24

14 (58.3)

3 (12.5)

1 (4.2)

0 (0.0)

6 (25.0)

1 (4.2)

9 (37.5)

32 (66.7)

15 (31.2)

1 (2.1)

0 (0.0)

Stage III/IV

66

45 (68.2)

10 (15.2)

3 (4.5)

0 (0.0)

8 (12.1)

3 (4.5)

18 (27.3)6

103 (78.0)

26 (19.7)12

3 (2.3)

0 (0.0)

  1. 1x2 = 16.6, p = 0.0004, OR 0.40 (95% CI 0.25–0.63), versus women without endometriosis
  2. 2x2 = 9.3, p = 0.002, OR 0.38 (95% CI 0.19–0.74), versus women without endometriosis
  3. 3x2 = 9.4, p = 0.002, OR 0.35 (95% CI 0.17–0.72), versus women without endometriosis
  4. 4x2 = 14.8, p = 0.0001, OR 0.37 (95% CI 0.21–0.62), versus women without endometriosis
  5. 5x2 = 8.6, p = 0.003, OR 0.33 (95% CI 0.15–0.74), versus women without endometriosis
  6. 6x2 = 6.77, p = 0.009, OR 0.46 (95% CI 0.24–0.86), versus women without endometriosis
  7. 7x2 = 11.17, p = 0.0008, OR 0.55 (95% CI 0.39–0.79), versus women without endometriosis
  8. 8x2 = 4.32, p = 0.037, OR 0.60 (95% CI 0.36–1.00), versus women without endometriosis
  9. 9x2 = 9.47, p = 0.002, OR 0.41 (95% CI 0.23–0.75), versus women without endometriosis
  10. 10x2 = 10.5, p = 0.001, OR 0.51 (95% CI 0.34–0.76), versus women without endometriosis
  11. 11x2 = 8.78, p = 0.003, OR 0.38 (95% CI 0.19–0.76), versus women without endometriosis
  12. 12x2 = 3.86, p = 0.049, OR 0.63 (95% CI 0.388–1.03), versus women without endometriosis