But the statistical closeness between the three main reasons is still too close to call on the younger demographic simply due to the greatly lower incident rates. The overall was less than 5 per 100,000 for any one of the lower age groups, and that's before breaking down the reasons. And like I mentioned in my last post that it's to be expected accidents would rank higher anyway just by the nature of kids and their curiosity.
Mooncatt in the method it states "We used the 2009 Kids’ Inpatient Database to identify hospitalizations from firearm-related injuries in young people <20 years of age; International Classification of Diseases, Ninth Revision, Clinical Modification, and external-cause-of injury codes were used to categorize the injuries and the causes as follows: assault, suicide attempt, unintentional, or undetermined. Incidences were calculated by using the weighted number of cases and the intercensal population. Risk ratios compared incidences." Through the results it displays they looked into 7391 hospitalizations to produce the graph. They concluded with On average, 20 US children and adolescents were hospitalized each day in 2009 due to firearm injuries. Public health efforts are needed to reduce this common source of childhood injury.