What do systematic reviews say?

Natural cycle FET vs modified natural cycle FET (HCG trigger)

The review found no eligible studies for this question.

• Cycle regimens for frozen‐thawed embryo transfer 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Natural cycle FET vs modified natural cycle FET (HCG trigger)

It is very uncertain whether natural cycle FET changes live birth rate per woman compared with modified natural cycle FET (HCG trigger) (very low certainty).

• Cycle regimens for frozen‐thawed embryo transfer 2017 · Cochrane Headline outcomes only
  OR 0.55 [0.16, 1.93]
  1 study · 60 participants
  Very low

RhLH vs uhCG

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 259 participants
  GRADE not reported

RhLH vs uhCG

It is very uncertain whether rhLH changes ongoing pregnancy/live birth rate per woman compared with uhCG (very low certainty).

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  OR 0.95 [0.51, 1.78]
  2 studies · 289 participants
  Very low

RhLH vs uhCG

It is very uncertain whether rhLH changes OHSS per woman ‐ Moderate OHSS compared with uhCG (very low certainty).

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  OR 0.83 [0.4, 1.7]
  2 studies · 289 participants
  Very low

RhLH vs uhCG

It is very uncertain whether rhLH changes clinical pregnancy rate per woman compared with uhCG (very low certainty).

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  OR 0.94 [0.54, 1.64]
  2 studies · 289 participants
  Very low

RhLH vs uhCG

It is very uncertain whether rhLH changes miscarriage rate per woman compared with uhCG (very low certainty).

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  OR 0.95 [0.38, 2.4]
  2 studies · 280 participants
  Very low

Progesterone vs hCG regimens

Progesterone showed no clear difference in live birth or ongoing pregnancy compared with hCG regimens (low certainty).

• Luteal phase support for assisted reproduction cycles 2015 · Cochrane Headline outcomes only
  OR 0.95 [0.65, 1.38]
  5 studies · 833 participants
  Low

Progesterone vs hCG regimens

Progesterone showed no clear difference in clinical pregnancy compared with hCG regimens (moderate certainty).

• Luteal phase support for assisted reproduction cycles 2015 · Cochrane Headline outcomes only
  OR 1.08 [0.9, 1.3]
  16 studies · 2355 participants
  Moderate

Progesterone vs hCG regimens

Progesterone may leads to lower OHSS compared with hCG regimens (low certainty).

• Luteal phase support for assisted reproduction cycles 2015 · Cochrane Headline outcomes only
  OR 0.46 [0.3, 0.71]
  5 studies · 1293 participants
  Low

Intervention not reported

It is very uncertain whether the intervention changes miscarriage (very low certainty).

• Intrauterine administration of human chorionic gonadotropin (hCG) for subfertile women undergoing assisted reproduction 2018 · Cochrane Headline outcomes only
  RR 1.04 [0.81, 1.35]
  11 studies · 3927 participants
  Very low

Intervention not reported

• Intrauterine administration of human chorionic gonadotropin (hCG) for subfertile women undergoing assisted reproduction 2018 · Cochrane Headline outcomes only
  no estimate extracted
  7 studies · 1764 participants
  Very low