The recently released UNICEF report on violence against children used our estimates of child homicide rates for year 2012 from the WHO Global Health Observatory. Of course, these estimates are uncertain for countries without good death registration data. We also had access to the police and justice system statistics for homicides reported to the UNODC (see their 2013 Global Homicide Study which also quotes our draft estimates) but in many countries police statistics on homicides are incomplete, and death registration data may also be incomplete or nonexistent. WHO, the World Bank, other UN agencies and some national governments are making a concerted effort to encourage and support the implementation and improvement of civil registration systems, including death registration with cause of death.

http://www.juancole.com/2014/09/child-homicide-unicef.html

US, Iraq have same child homicide rate – UNICEF