When comparing DID vs. schizophrenia, it’s safe to say that schizophrenia is slightly more common than dissociative identity disorder. In the US, schizophrenia affects 1.1% of the population[5], which equals around 2.8 million adults. On the other hand, between 0.1% and 1%[6] of the population reported having DID. This mental health condition is more prevalent in women than men.