OBJECTIVE: To examine the factor structure of symptom ratings in early-onset @entity716 . METHOD: Subjects were drawn from a 2-year prospective study of early onset @entity914 . Principal components analysis with orthogonal (varimax) rotation was used to create factors from baseline ratings on the Schedule for Positive Symptoms, the Schedule for Negative Symptoms, and the Brief Psychiatric Rating Scale for @entity1 . RESULTS: Youths with @entity161 (n = 27), @entity162 (n = 22), and @entity716 not otherwise specified (n = 20) were included. Four symptom factors were identified: negative symptoms, positive symptoms, @entity146 , and dysphoria. Negative symptoms were predictive of the diagnosis of @entity161 and treatment with antipsychotic medications. Neither @entity146 nor dysphoria were predictive of diagnosis. In subjects who completed follow-up assessments at year 1 (n = 49) and year 2 (n = 39), negative symptoms and @entity146 predicted poorer functioning. CONCLUSIONS: The four factors are clinically relevant, with both treatment planning and prognostic implications. Negative symptoms best differentiated @entity161 from the other disorders. @entity146 and dysphoria were nonspecific problems that occurred in all three disorders, which likely leads to misdiagnosis in community settings.

Symptom factors in early-onset XXXX .

@entity1 :: ('9606', 'Species') :: ['Children'] @entity162 :: ('MESH:D001714', 'Disease') :: ['bipolar disorder'] @entity146 :: ('MESH:D001523', 'Disease') :: ['behavioral problems', 'Behavior problems', 'behavior problems'] @entity914 :: ('MESH:D011618', 'Disease') :: ['psychotic disorders'] @entity161 :: ('MESH:D012559', 'Disease') :: ['schizophrenia'] @entity716 :: ('MESH:D011605', 'Disease') :: ['psychotic illnesses', 'psychosis']
@entity914 :: (MESH:D011618,Disease) :: ['psychotic disorders']
