That's mostly a laundry list of hypotheticals, aside from the seasonal study which had some statistically significant data indicating correlation. All the child

That's mostly a laundry list of hypotheticals, aside from the seasonal study which had some statistically significant data indicating correlation. All the childhood environmental factors that might have some small relation to poverty were described in that section as "proposed" or "discussed". It's entirely possible that some environmental factor associated with poverty might exacerbate the genetic factors responsible for the disease, but all things considered, schizophrenia is known to be a disease that affects rich and poor alike, across the globe, across cultures.