Table 1. KPIs score system.
SCORE/POINT	AGE	AMH	MII OOCYTE	FERTILIZATION	BLASTOCYST QUALITY
1	≥40	<1	≤3	<50%	Grade C
3	37-39	≥1-<2	4-6	≥50-<65%	≥1 Grade B/No Grade A
5	≤36	≥2	≥7	≥65%	≥1 Grade A/No Grade B