Table 1.
2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | Relative Change, 2000– 2008 (%) | P for Trend | |
---|---|---|---|---|---|---|---|---|---|---|---|
No. of liveborn neonates conceived after ART | 34,861 | 40,608 | 45,765 | 48,748 | 49,320 | 51,968 | 54,638 | 57,571 | 61,430 | 76.2 | |
No. of liveborn singleton neonates conceived after ART | 16,350 | 18,896 | 21,614 | 23,710 | 24,893 | 26,559 | 28,652 | 29,938 | 31,888 | 95.0 | |
% of ART births born as singletons at term with weight more than 2,500 g among all ART live births, total | 38.6 | 38.9 | 39.4 | 40.5 | 41.4 | 41.5 | 42.7 | 42.3 | 42.5 | 10.1 | <.01 |
Fresh, nondonor | 38.4 | 38.7 | 39.1 | 40.1 | 41.2 | 41.5 | 43.0 | 42.3 | 42.2 | 9.9 | <.01 |
Fresh, donor | 32.5 | 32.3 | 31.8 | 33.5 | 33.7 | 32.6 | 34.1 | 33.2 | 33.8 | 3.9 | .01 |
Frozen, nondonor | 47.5 | 47.7 | 50.4 | 50.0 | 50.0 | 50.9 | 49.7 | 50.0 | 50.9 | 7.3 | <.01 |
Frozen, donor | 41.7 | 43.6 | 44.3 | 46.6 | 44.7 | 43.0 | 46.0 | 46.7 | 44.8 | 7.5 | .09 |
% of singletons born at term with weight more than 2,500 g among all ART liveborn singletons, total | 83.6 | 84.1 | 83.9 | 83.9 | 83.5 | 82.9 | 83.3 | 83.3 | 83.4 | −0.2 | <.01 |
Fresh, nondonor | 84.1 | 84.6 | 84.4 | 84.3 | 83.9 | 83.6 | 84.0 | 83.8 | 83.9 | −0.2 | .04 |
Fresh, donor | 81.1 | 81.3 | 80.6 | 81.1 | 81.3 | 79.7 | 81.0 | 80.4 | 81.1 | 0.0 | .67 |
Frozen, nondonor | 84.3 | 84.5 | 85.3 | 85.6 | 84.4 | 83.6 | 83.6 | 84.6 | 83.9 | −0.5 | .13 |
Frozen, donor | 78.9 | 79.0 | 80.3 | 80.3 | 78.6 | 78.2 | 78.7 | 79.3 | 78.9 | 0.0 | .62 |
ART, assisted reproductive technology.