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Table 1 Outcome parameters in Group I (pronuclear zygote morphology)

From: Evaluation of day one embryo quality and IVF outcome – a comparison of two scoring systems

Pattern of embryos transferred "0" "Other" p
Number of cycles 109 140  
Maternal age (mean ± SD) 30.7 ± 3.9 31.3 ± 3.7 >0.5
Total number of embryos transferred 190 269  
Mean ± SD embryos/cycle 1.7 ± 0.5 1.9 ± 0.5 0.033
Biochemical pregnancies 58 74  
bPR (%) 53 53 >0.5
Clinical pregnancies 50 65  
cPR (%) 46 46 >0.5
Number of gestational sacs by US 66 78  
IR (%) 35 30 >0.5