Group I

[Oral Dydrogesterone]

(n = 284)

Group II

[Vaginal Progesterone]

(n = 280)

RR (95% CI)

P¹

LBR

72 (25.4%)

69 (24.6%)

1.03 (0.77 to 1.37)

0.846

OPR

79 (27.8%)

81 (28.9%)

0.96 (0.74 to 1.25)

0.842

CPR

97 (34.2%)

95 (33.9%)

1.01 (0.80 to 1.27)

0.955

Miscarriage Rate²

18 (18.6%)

14 (14.7%)

1.26 (0.66 to 2.38)

0.478