Fig. 2From: The impact of clinical and laboratory parameters on clinical pregnancy and live birth rates in fresh cycles: a retrospective study of 9608 high-quality cleavage-stage embryosRates of blastocyst culture and main clinical outcomes in different five groups. Statistical significance was defined as a P-value < 0.05. *** P < 0.001, **0.001 ≤ P < 0.01,* 0.01 ≤ P < 0.05. a Statistical significance compared with group 811Back to article page