Proportion (%) of prenatally diagnosed CCHD cases by year and result of trend analyses, International Clearinghouse for Birth Defects Surveillance and Research (ICBDSR) Critical Congenital Heart Defects (CCHD) Prenatal Diagnosis study 2000–2014*
| Programme by geographic region | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | Trend |
| Czech Republic | 32.5 | 35.4 | 38.8 | 38.1 | 40.7 | 40.8 | 32.6 | 51.3 | 42.9 | 49.0 | 50.4 | 39.8 | 41.5 | 20.9 | † | |
| UK-Wales | 21.9 | 30.1 | 32.6 | 32.9 | 42.7 | 38.5 | 37.1 | 55.9 | 40.2 | 55.6 | 55.4 | 50.6 | † | |||
| Netherlands-Northern | 5.3 | 10.0 | 17.8 | 13.6 | 18.5 | 31.6 | 32.4 | 33.3 | 44.7 | 58.3 | 51.7 | 65.9 | † | |||
| France-Rhone Alpes | 88.8 | 85.1 | 81.0 | 93.1 | 92.4 | 85.2 | 88.3 | - | ||||||||
| Canada | 43.7 | 42.5 | 45.1 | 43.5 | 46.7 | 48.0 | 45.4 | 43.5 | 47.6 | 46.4 | 48.1 | † | ||||
| Germany-Saxony Anhalt | 40.9 | 50.0 | 50.0 | 39.1 | 52.6 | 40.7 | 55.0 | 40.0 | 41.7 | 40.7 | 38.7 | 40.0 | - | |||
| USA-Atlanta | 42.2 | 41.2 | 38.1 | 38.7 | 48.1 | 76.7 | 75.0 | 66.7 | † | |||||||
| USA-Arkansas | 23.7 | 10.3 | 13.8 | 10.2 | 1.9 | 16.0 | 18.5 | 28.9 | 25.6 | 19.0 | † | |||||
| Italy-Emilia Romagna | 51.1 | 60.9 | 64.7 | 69.6 | 64.3 | 67.7 | 40.6 | 60.7 | 53.9 | 43.8 | 55.0 | 61.3 | - | |||
| Italy-Tuscany | 40.0 | 20.8 | 35.3 | 48.6 | 46.4 | 50.0 | 52.8 | 59.5 | 55.0 | 62.5 | 74.4 | 73.1 | † | |||
| Slovac republic | 4.3 | 4.7 | 7.7 | 4.7 | 17.9 | 14.8 | 7.5 | 4.4 | 23.8 | 10.8 | 33.3 | 20.9 | † | |||
| Malta | 33.3 | 9.1 | 12.5 | 21.4 | 30.0 | 36.4 | 20.0 | nc | ||||||||
| Italy-Lombardy | 75.0 | 78.3 | nc | |||||||||||||
| Argentina | 33.5 | 47.0 | nc | |||||||||||||
| India-Chennai | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | nc |
*ICBDSR programmes contributed data for different years within this time period, see table 1.
†significant increasing trend, - no trend, nc denotes not calculated because of too few data.
CCHD, critical congenital heart defects.