What do systematic reviews say?

Summary of findings table ‐ Progestogens vs GnRH agonist

Summary of findings table ‐ Progestagen showed no clear difference in miscarriage compared with gnRH agonist (low certainty).

• Progestogens for prevention of luteinising hormone (LH) surge in women undergoing controlled ovarian hyperstimulation… 2023 · Cochrane Headline outcomes only
  OR 0.49 [0.12, 2]
  1 study · 260 participants
  Low