Cycle cancellation rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
Natural cycle probably leads to lower cycle cancellation rate compared with programmed cycle (moderate certainty).
1 finding from 1 review
Miscarriage · subfertile women
It is very uncertain whether natural cycle FET changes miscarriage rate per woman compared with modified natural cycle FET (HCG trigger) (very low certainty).
1 finding from 1 review
Ongoing pregnancy · subfertile women
It is very uncertain whether natural cycle FET changes ongoing pregnancy rate per woman compared with modified natural cycle FET (HCG trigger) (very low certainty).
1 finding from 1 review
Multiple pregnancy rate · subfertile women
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Live birth rate per woman · subfertile women
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).
1 finding from 1 review
Miscarriage · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
It is very uncertain whether natural cycle changes miscarriage rate compared with programmed cycle (very low certainty).
1 finding from 1 review
Multiple pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Endometrial thickness (mm) · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
1 finding from 1 review
Other adverse effects · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Live birth rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
It is very uncertain whether natural cycle changes live birth rate compared with programmed cycle (very low certainty).
1 finding from 1 review
Clinical pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes
It is very uncertain whether natural cycle changes clinical pregnancy rate compared with programmed cycle (very low certainty).
1 finding from 1 review
Pregnancy rate per couple (all cycles) · couples with male subfertility
It is very uncertain whether IUI in natural cycles changes pregnancy rate per couple (all cycles) compared with TI (very low certainty).
1 finding from 1 review
OR 4.57 [0.21, 101.61]
Studies not reported
Very low
Live birth rate per couple (all cycles)‐ clomiphene citrate or letrozole · participants with unexplained subfertility
IUI in a natural cycle showed no clear difference in live birth rates per couple (all cycles) compared with TI or expectant management (low certainty).
1 finding from 1 review
Live birth rate per couple · participants with unexplained subfertility
IUI in a natural cycle probably leads to higher live birth rate per couple (all cycles) compared with TI or expectant management (moderate certainty).
1 finding from 1 review
Pregnancy rate per couple (all cycles) · participants with unexplained subfertility
IUI in a natural cycle probably leads to higher pregnancy rate per couple (all cycles) compared with TI or expectant management (moderate certainty).
2 findings from 1 review
Live birth rate per woman · stimulated cycles for subfertile couples
Natural cycle IVF showed no clear difference in live birth per woman compared with standard IVF (moderate certainty).
1 finding from 1 review
OHSS · stimulated cycles for subfertile couples
It is very uncertain whether natural cycle IVF changes OHSS per woman compared with standard IVF (very low certainty).
1 finding from 1 review
Clinical pregnancy · stimulated cycles for subfertile couples
Natural cycle IVF showed no clear difference in clinical pregnancy per woman compared with standard IVF (low certainty).
1 finding from 1 review
Ongoing pregnancy · stimulated cycles for subfertile couples
Natural cycle IVF showed no clear difference in ongoing pregnancy per woman compared with standard IVF (moderate certainty).
1 finding from 1 review
Multiple pregnancy rate · stimulated cycles for subfertile couples
It is very uncertain whether natural cycle IVF changes multiple pregnancy per woman compared with standard IVF (very low certainty).
1 finding from 1 review