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Table 1 Demographic and clinical characteristics of study participants in two groups

From: The effect of letrozole as an adjunct in GnRH-antagonist protocol on IVF/ICSI outcome in women with endometriosis: a randomized clinical trial

Variables

Letrozole group (N = 34)

Control group (N = 30)

P value

Female age (years)

\(31.38 \pm 5.06\)

\(33.41 \pm 4.51\)

0.10

Body mass index (kg/m2)

\(21.9 \pm 2.2\)

\(21.5 \pm 2.4\)

0.56

Duration of infertility (years)

\(2.2 \pm 2.34\)

\(3.7 \pm 3.5\)

0.06

No. of couples with primary infertility, n (%)

28 (82.4)

22 (73.3)

0.65

No. of women with dysmenorrhea, n (%)

17 (50)

16 (53.3)

0.78

PCOS diagnosis, n (%)

5 (14.7)

4 (13.3)

0.91

Endometriosis type, n (%)

 OMA

24 (52.9)

23 (76.7)

0.528

 DIE

10 (47.1)

7 (23.3)

Endometriosis stage, n (%)

 Stage III

29 (85.3)

28 (93.3)

0.405

 Stage IV

5 (14.7)

2 (6.7)

Basal serum level of FSH (IU/L)

\(4.0 \pm 2.2\)

\(4.9 \pm 2.4\)

0.13

Basal serum level of LH (IU/L)

\(4.5 \pm 2.3\)

\(5.4 \pm 2.2\)

0.11

Serum level of AMH (ng/ml)

\(2.4 \pm 1.1\)

\(2.1 \pm 1.5\)

0.31

Serum level of TSH (IU/mL)

\(1.3 \pm 1.3\)

\(1.5 \pm 1.1\)

0.52

Antral follicle count

\(7.3 \pm 2.1\)

\(6.9 \pm 3.1\)

0.43

No. of previous failed IVF cycles

\(0.14 \pm 0.34\)

\(0.41 \pm 0.73\)

0.10

  1. TSH thyroid-stimulating hormone, AMH anti-Müllerian hormone, OMA ovarian endometriosis, DIE deep infiltrating endometriosis
  2. Descriptive data were compared using independent Student’s t-test and presented as mean ± SD. P value ≤ 0.05 was considered statistically significant. No. number, FSH follicle-stimulating hormone, LH luteinizing hormone