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Table 2 Differences in reporting of live birth rates depending on reference point, 2005–2016

From: Time associations between U.S. birth rates and add-Ons to IVF practice between 2005–2016

Study year

2005

2010

2015

2016

p-value

fnd-cycles n

27,947

30,425

21,771

19,137

 

Live birth rates/cycle- start (%)

27.8

30.2

23.9

22.2

 < 0.0001

Live birth rates/embryo transfer (%)

34.5

36.8

36.7

36.3

 < 0.0001

Gain in absolute percentage points

 + 6.7

 + 6.4

 + 12.8

 + 14.1

 < 0.0001

  1. This table demonstrates the gain in absolute percentage points for IVF centers when reporting live births with reference point embryo transfer rather than cycle start. The gain more than doubled after 2010, reflective of more “all-freeze” cycles and other IVF practice changes after 2010
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Reproductive Biology and Endocrinology

ISSN: 1477-7827

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