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Table 1 Characteristics of the patients according to BMI

From: Does obesity have detrimental effects on IVF treatment outcomes?

 

BMI

 

18.5–24.9

25.0–29.9

≥30.0

P

(n = 164)

(n = 70)

(n = 64)

BMI (kg/m2)

21.9 ± 1.7a

27.1 ± 1.4b

33.1 ± 2.2c

<0.001

Women’s age (yr)

30.1 ± 3.9

30.8 ± 3.8

30.8 ± 4.4

0.313

Years of infertility

4.1 ± 3.1a

4.7 ± 2.8a,b

5.7 ± 2.9b

0.002

Ever pregnant prior to inclusion

15 (9)

7 (10)

4 (8)

0.443

Smoking

44 (23.7)

18 (25.7)

13 (20.3)

0.106

Baseline FSH (pg/mL)

6.3 ± 1.7

6.2 ± 1.8

6.2 ± 1.6

0.550

Baseline LH (pg/mL)

6.1 ± 2.8

5.9 ± 1.8

4.8 ± 2.7

0.262

Baseline estradiol (pg/mL)

52.8 ± 26.6

50.7 ± 22.2

58.6 ± 27.1

0.193

Antral follicle count

10.7 ± 6.0

10.9 ± 6.6

12.4 ± 6.9

0.206

Polycystic ovaries on ultrasound

22 (13.4)

11 (15.7)

13 (20.3)

0.874

Polycystic ovary syndrome*

35 (26.9)

16 (29.1)

16 (31.4)

0.087

Unexplained infertility

41 (25.0)

16 (22.9)

14 (21.9)

0.657

Poor ovarian reserve

6 (3.7)

3 (4.3 %)

3 (4.7)

0.974

Male factor

38 (23.2)

16 (22.9)

13 (20.3)

0.858

Tubal Factor

34 (20.7)

16 (22.9)

13 (20.3)

0.692

Endometriosis

5 (3.0)

3 (4.3)

4 (6.3)

0.322

Anovulation

15 (9.1)

8 (11.4)

8 (12.5)

0.128

Combined infertility

25 (15.2)

8 (11.4)

9 (14.1)

0.332

  1. Data are presented as mean ± standard deviation or n (%). BMI body mass index, ns non significant (p <0.05)
  2. Values across a row with different superscripts (a-c) indicate significant difference between pregnancy outcome categories (p <0.017), and values across an individual row with matching superscripts (a-c)indicate no significant difference between pregnancy outcome categories. *Excluding 62 cases (34 in normal-weight, 15 in overweight, and 13 in obese group) in which the complete data could not be obtained from the records available