You claimed a causal relationship between mj and schizophrenia and said it is a big contributor. If that were so, then the US and the Netherlands should rank high and Singapore should rank low. That casts doubt on your claim, so its up to you to explain
Check it out:
Fourth result from your first link says:
‘the study doesn’t prove causality, cautions Dr. Diana Martinez, a psychiatrist and addiction researcher at Columbia University. “You can’t say that cannabis causes psychosis,” she says. “It’s simply not supported by the data,” she says.
‘Lisdahl agrees. In order to show causality, one would have to follow people over time before they started using weed to years later when they have their psychotic episodes, she says. “You need twins in the studies, you need genetic information,” among all other kinds of data, she says.’
So sad for you.