If you haven't heard by now there was recently a study conducted by the CMAJ that focused on "Immigrant Youth and Firearm Injury Risk". In typical fashion the Canadian mainstream media picked up and ran with this story, and altered the findings to show that Ontario youth were being injured once a day by firearms. This couldn't be further from the truth, so don't worry, children aren't shooting each other every day.
The original study from the CMAJ partially takes into account the research done by the Canadian Pediatric Society (links sourced at the bottom of this article), which while both are thorough studies they do take in factors that aren't firearm related injuries in the sense that the term would evoke the imagery of children harmed by actual firearms. In fact the study from the CPS does take into account injuries from paintball, airsoft, and BB guns. While any injury does need to be statistically recorded, including injuries from paintball, airsoft, and BB guns with firearm injuries skews the statistic of actual firearm related injury.
Beyond having a skewed statistic in their reporting, the mainstream media skewed their report to be more sensational by labeling persons under 24 years of age to be children. For the purpose of sensational journalism, young adults can apparently be included in with the statistic of youth, and this would appear to be a deliberate move on behalf of the media. Without the age group of 20 - 24, the story would have been far less sensational and in fact a non-starter. But let's not let something as silly as age and proper statistical categorization get in the way of a sensationalist story.
The reporting from the mainstream media also failed to mention any other societal or contributing factors to firearm injury and homicide. Such as how almost 30% of youth accused of murder in 2012 were involved in gang related homicide. Remove high risk lifestyle factors such as drug use, gang violence, and crime and you will quickly find that any risk of firearm injury decreases exponentially. It wouldn't create good headlines however to explore societal factors that contribute to violence, and perhaps address some non politically correct topics with reporting. This reporting by the media was a thinly veiled hatchet job aimed at firearm owners, and doesn't take much research at all to see through the misinformation. So don't worry parents, one child per day isn't being injured or killed by firearms in Ontario, no matter what the media would have you believe.