[S]uicide is one of the most common causes of death for adolescents aged 15 to 19 [in OECD and EU countries].

I did not expect that. Though I’m not sure if this means mental health is bad; or if physical health and accident prevention are just very good.

Other personal highlights from the summary:

In almost half of rich countries, more than one in five childrenlive in poverty.

Expectations to prioritize work can lead to long hours and stress that reduce the time and energy parents have for their children. On average, two out of five employees in Europe found it difficult to fulfil family responsibilities at least several times per month.

Kind of crazy seeing all the problems parents have here in germany and the whole discussion about the recent PISA study here and everything else and then being told that this is, well, top of the world.

I bet a large part of the reason for Netherlands' first place ranking for mental well-being is the way their cities are designed around the bicycle, not the car. Coming from Germany, I find it incredible what a difference that makes every time I visit.
On a basic emotional level it feels like suddenly not being surrounded by predators anymore.