PMID- 17665305 OWN - NLM STAT- MEDLINE DCOM- 20080813 LR - 20191210 IS - 1573-3327 (Electronic) IS - 0009-398X (Linking) VI - 39 IP - 2 DP - 2008 Jun TI - Does diagnostic classification of early-onset psychosis change over follow-up? PG - 137-45 AB - OBJECTIVE: To examine the diagnostic stability and the functional outcome of patients with early-onset psychosis (EOP) over a 2-year follow-up period. METHODS: A total of 24 patients (18 males (75%) and 6 females (25%), mean age +/- SD: 15.7 +/- 1.6 years) with a first episode of EOP formed the sample. Psychotic symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). Social disability was measured with the Global Assessment of Functioning (GAF) disability scale. Diagnosis was assessed using the Kiddie-Sads-Present and Lifetime Version (K-SADS-PL), according to DSM-IV criteria. All diagnoses were re-assessed after 1 year and 2 years. RESULTS: Schizophrenia had the highest prospective consistency (100% predictive value), while diagnostic stability was moderate for bipolar disorder (71.4%), and low for schizoaffective disorder (50%), schizophreniform and brief psychosis (50%), and psychosis not otherwise specified (NOS) (16.7%). The agreement between the baseline diagnoses and the 1-year follow-up diagnoses was 54.2%, whereas between the 1-year follow-up and the 2-year follow-up, it rose to 95.7%. Regardless of diagnosis, baseline negative symptoms were the only significant predictor of level of functioning at the 2-year follow-up (p = 0.010). CONCLUSION: Our results highlight the primacy of the first-year follow-up diagnosis in predicting diagnostic stability of EOP. FAU - Fraguas, David AU - Fraguas D AD - Department of Psychiatry, Hospital General Universitario Gregorio Maranon, Ibiza 43, CP 28009, Madrid, Spain. dfraguash@yahoo.es FAU - de Castro, Maria J AU - de Castro MJ FAU - Medina, Oscar AU - Medina O FAU - Parellada, Mara AU - Parellada M FAU - Moreno, Dolores AU - Moreno D FAU - Graell, Montserrat AU - Graell M FAU - Merchan-Naranjo, Jessica AU - Merchan-Naranjo J FAU - Arango, Celso AU - Arango C LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070731 PL - United States TA - Child Psychiatry Hum Dev JT - Child psychiatry and human development JID - 1275332 SB - IM MH - Adolescent MH - Bipolar Disorder/diagnosis/therapy MH - Child MH - *Early Diagnosis MH - Female MH - Follow-Up Studies MH - Humans MH - Likelihood Functions MH - Linear Models MH - Male MH - Predictive Value of Tests MH - Psychological Tests MH - Psychotic Disorders/*diagnosis MH - Reproducibility of Results MH - Schizophrenia/diagnosis/therapy MH - Spain MH - Time Factors EDAT- 2007/08/01 09:00 MHDA- 2008/08/14 09:00 CRDT- 2007/08/01 09:00 PHST- 2007/02/01 00:00 [received] PHST- 2007/07/16 00:00 [accepted] PHST- 2007/08/01 09:00 [pubmed] PHST- 2008/08/14 09:00 [medline] PHST- 2007/08/01 09:00 [entrez] AID - 10.1007/s10578-007-0076-3 [doi] PST - ppublish SO - Child Psychiatry Hum Dev. 2008 Jun;39(2):137-45. doi: 10.1007/s10578-007-0076-3. Epub 2007 Jul 31.