Table 1: Baseline characteristics of the included patients.

Variable

Letrozole (Group A) (n = 45)

Letrozole plus Gonadotropin (Group B) (n = 45)

Total (n = 90)

P-value¥

Mean

Standard Deviation

Mean

Standard Deviation

Mean

Standard Deviation

Age (year)

26.0

3.5

24.2

3.1

25.1

3.4

0.015*

BMI (kg/m2)

28.6

2.3

28.0

2.1

28.3

2.2

0.156

Prior Infertility period (year)

2.6

1.0

2.5

0.8

2.6

0.9

0.902

FSH (mIU/mL)

5.8

1.2

5.8

1.1

5.8

1.2

0.948

Progesterone (ng/mL)

1.7

0.7

1.5

0.4

1.6

0.6

0.127

LH (IU/L)

6.0

1.2

6.0

1.1

6.0

1.2

0.900

Baseline E2(pg/mL)

47.3

15.6

44.9

15.9

46.1

15.7

0.445

Prolactin (ng/mL)

15.8

4.0

17.8

5.3

16.8

4.8

0.104

TSH (mU/L)

2.2

0.6

1.9

0.6

2.0

0.6

0.018*

¥Mann–Whitney U test; *Significant P-value