Table 1. Degree of inter-laboratory agreement (Gwet AC2 index) on the evaluation of embryo variables, by TL and CMA.

	Primo VisionTM		EmbryoScopeTM		CMA
	Gwet	95%CI	Gwet	95%CI	Gwet	95%CI
NumberPN	0.99	0.99 to 1	0.99	0.98 to 1
SizePN	0.92	0.86 to 0.97	0.97	0.90 to 1
Opposition2PN	0.89	0.83 to 0.94	0.92	0.86 to 0.97
Direct division 1 to 3 cells	0.87	0.78 to 0.97	0.88	0.77 to 0.99
Direct division 3 to 5 cells	0.83	0.74 to 0.93	0.90	0.81 to 1
Fragmentation	0.83	0.78 to 0.88	0.91	0.87 to 0.95	0.95	0.92 to 0.98
Multinucleation 2–4 cell stage	0.70	0.61 to 0.79	0.94	0.90 to 0.97	0.92	0.86 to 0.98
False cleavage	0.69	0.53 to 0.84	0.77	0.62 to 0.93
Vacuoles	0.58	0.41 to 0.76	0.57	0.36 to 0.79	0.99	0.99 to 1
Asymmetry	0.39	0.22 to 0.55	0.40	0.25 to 0.54	0.54	0.44 to 0.64

PN: pronuclei