Table 2 Ultrasonographic findings of endometrium on the day of hCG and the pregnancy rate according to the endometrial thickness

ESR at hCG-d

0.6±0.2

(0.2–0.9)

0.4±0.2

(0.2–0.9)

0.5±0.2

(0.2–0.9)

t = 2.98

EV (ml) at hCG-d

1.6±0.6

(0.7–3.1)

2.7±1.0

(1.4–5.9)

2.4±1.0

(0.7–5.9)

t = 3.95

VI% at hCG-d

4.8±3.2

(0.7–11.0)

5.6±3.5

(1.43–13.6)

5.4±3.4

(0.7–13.6)

t = 0.70

FI at hCG-d

20.3±5.6

(2.4–25.6)

22.4±2.5

(18.7–29.0)

21.9±3.6

(2.4–29.0)

t = 1.57

VFI at hCG-d

1.1±0.7

(0.1–2.2)

1.3±0.9

(0.2–3.9)

1.2±0.8

(0.1–3.9)

t = 0.88

Pregnancy rate

2/15 (13.3%)

18/42 (42.9%)

20/57 (35%)

X² = 4.22