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Table 2 Hormonal dynamics: follicular phase levels of serum estradiol, progesterone, and LH

From: Hormonal, follicular and endometrial dynamics in letrozole-treated versus natural cycles in patients undergoing controlled ovarian stimulation

 

Estradiol (pmol/mL)

Progesterone (pmol/mL)

LH (IU/L)

 

Group I (Natural cycle)

Group II letrozole 2.5 mg

Group III (letrozole 5 mg)

Group I (Natural cycle)

Group II (letrozole 2.5 mg

Group III (letrozole 5 mg)

Group I (Natural cycle)

Group II (letrozole 2.5 mg

Group III (letrozole 5 mg)

D3

139.8 ± 66.36

154.22 ± 131.31

126.71 ± 46.75

2.35 ± 0.84

2.57 ±.90

2.55 ±.89

5.18 ± 2.25

5.22 ± 3.41

5.28 ± 2.71

D7

257.75 ± 187.8

196.60 ± 127.07

147.63 ± 69.74

2.08 ± 0.40

2.37 ± 0.87

2.80 ± 0.82

5.1 ± 1.34

6.71 ± 4.23

8.28 ± 4.07

D 9-11

380.48 ± 238.78

810.05 ± 178.26

562.53 ± 137.51

2.35 ± 0.85

2.2 ± 0.79

2.67 ± 0.47

5.89 ± 2.96

5.76 ± 3.30

6.65 ± 2.95

D hCG

911.48 ± 941.96

1275.41 ± 927.66

1066.16 ± 1876.37

2.46 ± 1.32

2.40 ± 0.89

2.75 ± 0.75

17.39 ± 16.09

8.92 ± 9.86

10.50 ± 13.81

E2/follicle ≥ 16 mm

593.12 ± 577.4

584.41 ± 1147.84

389.8 ± 849.79

      
  1. P value: 0.025: day7 for serum Estradiol between group I and III.
  2. P value: 0.041 day of hCG For serum Estradiol between group I and III.
  3. P value: 0.000 LH at day of HCG group I vs II