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Table 5 Frozen embryo transfer outcome

From: Should a single blastocyst transfer policy be a clinical decision or should it depend on the embryological evaluation on day 3?

  eSET with elective day 5 transfer eSET with transfer day 3 or 5 Statistical significance
  /cycle (n = 188) /ET (n = 171) /cycle (n = 143) /ET (n = 123)  
Positive hCG (%) 34/188 (18.06) 34/171 (19.88) 30/143 (21.00) 30/123 (24.39) NS
Clinical pregnancy rate (%) 26/188 (13.83) 26/171 (15.20) 21/143 (14.69) 21/123 (17.07) NS
Ongoing pregnancy rate (%) 24/188 (12.77) 24/171 (14.04) 18/143 (12.56) 18/123 (14.63) NS
Pregnancy loss        
   Miscarriage 2/26 (7.69) 3/20 (20) NS
   Ectopic pregnancy 0 1/30 (3.33) NS
Single embryo transfer (%) 142/171 (83.0) 96/123 (78.05) NS
Multiple pregnancy rate (%) 2/24 (8.33) 1/18 (5.56) NS
    Day 3 Day 5  
    /cycle (n = 41) /ET (n = 26) /cycle (n = 102) /ET (n = 97)  
Positive hCG (%)    5/41 (12.20) 5/26 (19.23) 25/102 (24.51) 25/97 (25.77) NS
Clinical pregnancy rate (%)    4/41 (9.76) 4/26 (15.38) 17/102 (16.67) 17/97 (17.53) NS
Ongoing pregnancy rate (%)    4/41 (9.76) 4/26 (15.38) 14/102 (13.72) 14/97 (14.43) NS
Pregnancy loss        
   Miscarriage    0 3/17 (17.6) NS
   Ectopic pregnancy    0 1/25 (4) NS
Single embryo transfer (%)    13/26 (50.0) 83/97 (85.6) <0.001
Multiple pregnancy rate (%)    ¼ (25) 0 NS