Prevention of schizophrenia is regarded as difficult because there is no reliable markers for the later development of the disease, and much of the evidence for the effectiveness of early interventions to prevent schizophrenia is inconclusive.
Because there is no reliable markers for the later development of the disease. This was what Prevention of schizophrenia is regarded as difficult. Much of the evidence for the effectiveness of early interventions to prevent schizophrenia is inconclusive.