Statistical differences are even MORE drastic when comparing children’s outcomes because they are each embedded in their respective school systems and whatever their pediatric healthcare systems are like.
Children’s lives are already dictated partially by the State and how they can socialize is usually quite restrictive.
SO a 15 year old in Sweden and a 15 year old in the USA have even MORE vastly different options from each other than adults do.
For example, right now in 2023, school sh293tg seems to be an unconsciously viable option for an average 15 year old to consider as their demise. I bet that was unthinkable when you were growing up. But times change and available options change.