Table 2.
Distribution of AHT incidence by Birth Year, Washington state, 1999–2013
| Birth Year | Births | Count AHT Hospitalisations < 1 year of age | Incidence < 1 year of age per 100 000 |
|---|---|---|---|
| 1999 | 79 616 | 9 | 11.3 |
| 2000 | 80 947 | 14 | 17.3 |
| 2001 | 79 568 | 13 | 16.3 |
| 2002 | 79 078 | 20 | 25.3 |
| 2003 | 80 563 | 9 | 11.2 |
| 2004 | 81 858 | 18 | 22.0 |
| 2005 | 82 904 | 10 | 12.1 |
| 2006 | 87 335 | 28 | 32.1 |
| 2007 | 89 480 | 20 | 22.4 |
| 2008 | 90 911 | 22 | 24.2 |
| 2009 | 89 712 | 31 | 34.6 |
| 2010 | 87 026 | 24 | 27.6 |
| 2011 | 87 560 | 26 | 29.7 |
| 2012 | 87 876 | 26 | 29.6 |
| 2013 | 86 982 | 20 | 23.0 |
| Total: | 1 271 416 | 290 | 22.8 |
AHT: Abusive head trauma