American Journal of Psychiatry · 2011 · 259 citations · 33 references
First-admission patients with psychotic disorders run the risk of being misclassified at early stages in the illness course, including more than 2 years after first hospitalization. Diagnosis should be reassessed at all follow-up points.
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Missing data: Our view of the state of the art.
Joseph L. Schafer, John W. Graham · Psychological Methods · 2002 · 10.7K citations