> Using a different methodology, a similar, strong positive correlation between altitude and suicide rates has recently been reported by Kim and colleagues, (20

> Using a different methodology, a similar, strong positive correlation between altitude and suicide rates has recently been reported by Kim and colleagues, (2011) using all counties in the United States as well as all 233 counties in South Korea. I assumed culture was a large component to this, but I don't know enough about South Korea to compare its high altitude people to those of the US. Maybe it is something environmental?