According to a 9 year follow up study of 385 patients who presented with prodromal symptoms of schizophrenia, what percentage of patients developed schizophrenia after 4.5 years?

Question

Quizplus · Accepted Answer

According to the study, 35% of patients developed schizophrenia after 4.5 years, but the question is asking for the percentage after 9 years. It is likely that more patients would have developed schizophrenia in the additional 4.5 years, so C (70%) is the closest option. None of the other options are close to the actual percentage.

According to a 9 Year Follow Up Study of 385