Daily VP (n = 272)

Daily VP + IMP (n = 198)

P value

Age

30 (20 - 43)

30 (21 - 43)

0.09

Age brackets

<35

227 (60.1)

151 (39.9)

0.05

≥35

45 (48.9)

47 (51.1)

Body mass index (kg/m²)

21.9 (17.3 - 34.8)

22.6 (15.4 - 31.6)

0.17

Body mass index (kg/m²) brackets

<30

265 (57.6)

195 (42.4)

0.43

≥30

7 (70)

3 (30)

Duration of infertility (years)

3 (1 - 14)

3 (1 - 22)

0.58

Number of transferred embryos

1 (1 - 2)

1 (1 - 2)

0.48

Number of previous attempts

0 (0 - 9)

0 (0 - 7)

0.2

Day of starting progesterone

Progesterone level (ng/mL)

0.22 (0.03 - 1)

0.2 (0.05 - 1.4)

0.11

Estrogen level (pg/mL)

255 (109 - 984)

283 (110 - 817)

0.12

Endometrial thickness (mm)

9.2 (7.1 - 13)

9.1 (7.1 - 14.6)

0.12

Causes of infertility

Diminished ovarian reserve

9 (3.3)

9 (4.5)

0.78

Endometrioma

8 (2.9)

4 (2)

Male factor

58 (21.3)

56 (28.3)

Ovulatory dysfunction

28 (10.3)

18 (9.1)

Recurrent implantation failure

20 (7.4)

11 (5.6)

Recurrent miscarriage

3 (1.1)

2 (1)

Tubal factor

23 (8.5)

17 (8.6)

Unexplained

123 (45.2)

81 (40.9)

Blastocyst morphology

Excellent

62 (23.3)

61 (31.4)

0.08

Good

60 (22.6)

46 (23.7)

Average

71 (26.7)

51 (26.3)

Poor

73 (27.4)

36 (18.6)