Table 2.

Differences in reporting of live birth rates depending on reference point, 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

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