Table 2 Multivariate logistic regression model of factors associated with ET for the prediction of ongoing pregnancy

30.4 ± 5.0

32.2 ± 5.3

0.94

(0.90;0.98)

0.94

(0.89;0.99)

0.013

24.1 ± 4.8

24.7 ± 5.8

0.98

(0.94;1.02)

-

-

-

84 (75.0)

254 (85.2)

0.52

(0.30;0.90)

0.45

(0.24;0.84)

0.013

3.5 ± 1.2

3.1 ± 1.3

1.23

(1.03;1.47)

1.16

(0.94;1.43)

0.169

Substance used for ovulation induction

hCG^b

89 (79.5)

237 (79.5)

Reference

Reference

-

-

-

Synthetic GnRH^b

3 (2.7)

13 (4.4)

0.45

(0.10;2.05)

-

-

Choriogonadotropin alpha^b

20 (17.6)

48 (16.1)

2.12

(1.16;3.86)

-

-

42.5 ± 19.8

40.1 ± 18.5

1.01

(0.99;1.02)

-

-

-

56.5 ± 21.9

60.0 ± 25.4

1.00

(0.99; 1.00)

-

-

-

Uterine position

Anteverted^b

94 (83.9)

261 (87.6)

Reference

Reference

-

-

-

Midposed^b

14 (12.5)

26 (8.7)

1.85

(0.88;3.89)

-

-

Retroverted^b

2 (1.8)

11 (3.7)

0.33

(0.04;2.67)

-

-

Uterine angle (Corpus–Cervix)

Normal^b

77 (68.8)

178 (59.7)

Reference

Reference

-

-

-

Pointed^b

27 (24.1)

54 (18.1)

1.22

(0.67;2.22)

-

-

Very pointed^b

8 (7.1)

66 (22.1)

0.42

(0.17;1.05)

-

-

85.2 ± 12.4

80.7 ± 40.9

1.03

(1.01;1.05)

1.03

(1.01;1.06)

0.006

12.1 ± 3.5

11.4 ± 2.7

1.05

(0.99;1.12)

-

-

-

29.1 ± 8.1

28.6 ± 7.4

1.01

(0.97;1.04)

-

-

-