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Table 1 Comparison of fertilization rates between IVF and ICSI technics on the first cycle after 4 IUI

From: ICSI diagnostic: a way to prevent total fertilization failure after 4 unsuccessful IUI

  IVF ICSI p-value
Number of cycles 251  
MII oocytes 749 679  
 2 PN (%) 506 (67, 5%) 466 (69%) NS
 3 PN (%) 52 (7%) 19 (3%) 0,0003
 1 PN (%) 42 (6%) 19 (3%) 0,0087
 0 PN (%) 161 (21%) 106 (16%) 0,0044
Total failure of fertilization (%) 22 (9%) 0 <0.0001
  1. IVF in vitro fertilization, ICSI Intracytoplamic sperm injection, MII metaphase 2, NS no significant, PN pronuclei