Table I.

Newly introduced additions that may have adversely affected IVF outcomes.

Newly identified additions
Embryo selection
Extended embryo culture to blastocyst
Elective single embryo transfer
Closed embryo incubation systems with time lapse imaging
PGS*
Mild ovarian stimulations
‘Mini-IVF’
Natural cycle IVF
Patient-friendly IVF
Cycle interruptions
All-freeze cycles with frozen-thawed cycle to follow
Embryo banking with combined frozen-thawed cycle to follow

^*Now also called PGT-A (preimplantation genetic testing for aneuploidy).