According to this article,
One in four people in the world will be affected by mental or neurological disorders at some point in their lives
But this statistics doesnt tell us how many people is having a mental disorder in the world right now. I would like to know this to be able to compare worldwide mental disorder statistics with regional mental disorder statistics or with statitics for people living in certain conditions, many times this statistics show how many people is having a mental disorder in the moment the statistics is made (not once in their lives) How many people have a mental disorder in the world at a same certain moment?
Note: I would like to use the tag "mental disorders" but it doesnt exist and I dont have the reputation to create it.