From: Role of intramuscular progesterone supplementation on the day of embryo transfer in artificial frozen cycles
Group 1 (n = 177)
Group 2 (n = 177)
P value
Serum progesterone (ng/ml)
13.43 ± 4.65
11.97 (9.25–40)
4.62 ± 2.77
3.56 (1.52–9.15)
< 0.001
Number of transferred embryos
2
N/A
Number of gestational sacs
0.66 ± 0.57
1 (0–2)
0.63 ± 0.56
0.574