> The researchers conducted an extensive study search across various databases and gray literature from January 1, 1980, to May 30, 2023, without geographical o

> The researchers conducted an extensive study search across various databases and gray literature from January 1, 1980, to May 30, 2023, without geographical or language limitations. They included studies reporting original data on cat ownership and schizophrenia-related outcomes. Out of 1,915 identified studies, 17 were used from 11 different countries. cherry picking studies to find some meaningful signal. Meta analysis is not a thing, it's just pseudo-science.