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Table 5 Pregnancy outcome

From: The continuum of ovarian response leading to BIRTH, a real world study of ART in Spain

  All women Poor
Responders
Suboptimal responders Normal
Responders
Implantation rates
(Total number of sacs / Total number of embryos transferred)
26.3%
(154/586)
16.0%
(8/50)
22.4%
(49/219)
30.6%
(97/317)
Clinical pregnancy (Total clinical pregnancies / Total number of women with embryos transferred) 33.6%
(183/545)
23.2%
(10/43)
30.4%
(59/194)
37.0%
(114/308)
Number of gestation sacs (% vs total sacs)
 1 156 (85.7%) 10 (100%) 53 89.8%) 93 (82.3%)
 2 26 (14.3%) 0 (0%) 6 (10.2%) 20 (17.7%)
  1. Note: Means & percentages are based on the number of patients with non-missing data