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Table 3 Pregnancy outcomes

From: Live birth rate after human chorionic gonadotropin priming in vitro maturation in women with polycystic ovary syndrome

  Overalla (n = 873) Type of first embryo transfer
Fresh (n = 823) Frozen (n = 50)
Number of embryos transferred 2.5 ± 0.6 2.5 ± 0.6 2.5 ± 0.6
After first embryo transfer
 Live birth, n (%) 277 (31.7) 263 (32.0) 14 (28.0)
  Singleton 175/277 (63.2) 165/263 (62.7) 10/14 (71.4)
  Twins 102/277 (36.8) 98/263 (37.3) 4/14 (28.6)
 Positive beta hCG, n (%) 438 (50.2) 417 (50.7) 21 (42.0)
 Clinical pregnancy, n (%) 380 (43.5) 361 (43.9) 19 (38.0)
 Ongoing pregnancy, n (%) 286 (32.8) 272 (33.0) 14 (28.0)
 Implantation, % 25.1 25.3 20.7
 Ectopic pregnancy, n (%) 12 (1.4) 11 (1.3) 1 (2.0)
 Miscarriage (before 12 weeks), n (%) 81 (9.3) 76 (9.2) 5 (10.0)
 Miscarriage (between 12 and 24 weeks), n (%) 9 (1.0) 9 (1.1) 0 (0.0)
 Birth weight, g
  Singleton 2980.7 ± 733.4 2951.3 ± 737.2 3433.3 ± 625.0
  Twins 2325.8 ± 545.5 2302.1 ± 538.1 2412.5 ± 513.2
At 12 months
 Total number of embryo transfers, n (%)b
  1 779 (89.2)   
  2 87 (10.0)   
  3 7 (0.8)   
 Live birth, n (%) 294 (33.7)   
  Singleton 192/294 (65.3)   
  Twins 102/294 (34.7)   
 Positive beta hCG, n (%) 508 (58.2)   
 Clinical pregnancy, n (%) 440 (50.4)   
 Ongoing pregnancy, n (%) 326 (37.3)   
 Implantation, % 25.6   
 Ectopic pregnancy, n (%) 14 (1.6)   
 Miscarriage (before 12 weeks), n (%) 102 (11.6)   
 Miscarriage (between 12 and 24 weeks), n (%) 9 (1.0)   
 Birth weight, g
  Singleton 2969.9 ± 737.3   
  Twins 2307.2 ± 536.0   
  1. Values are mean ± standard deviation, or number (%)
  2. aThirty-three women were lost to follow-up after the first transfer, 11 did not undergo embryo transfer, one woman had no oocytes retrieved, and three women had no embryos to transfer
  3. hCG human chorionic gonadotropin
  4. bA total of 1007 transfers were performed, but no follow-up data were available for 33, meaning that data from 974 transfers are reported