Daily VP (n = 272)

Daily VP + IMP (n = 198)

OR (95%CI)

P value

Positive pregnancy test

171/272 (62.9)

125/198 (63.1)

0.98 (0.67 - 1.44)

0.95

Implantation rate

161/391 (41.2)

143/291 (49.1)

0.72 (0.53 - 0.98)

0.03

Biochemical pregnancy

33/272 (12.1)

10/198 (5.1)

0.38 (0.18 - 0.8)

0.009

Clinical pregnancy

135/272 (49.6)

114/198 (57.6)

1.37 (0.95 - 1.99)

0.08

Miscarriage rate

34/272 (12.5)

11/198 (5.6)

0.41 (0.2 - 0.83)

0.01

Ongoing pregnancy

101/272 (37.1)

103/198 (52)

1.83 (1.26 - 2.66)

0.01

Ectopic pregnancy

3/272 (1.1)

1/198 (0.5)

0.45 (0.47 - 4.4)

0.64

Multiple pregnancy

26/272 (9.6)

28/198 (14.1)

1.55 (0.88 - 2.75)

0.12