PMID- 25277757 OWN - NLM STAT- MEDLINE DCOM- 20161216 LR - 20161217 IS - 1751-7893 (Electronic) IS - 1751-7885 (Linking) VI - 10 IP - 2 DP - 2016 Apr TI - Examination of the Positive and Negative Syndrome Scale factor structure and longitudinal relationships with functioning in early psychosis. PG - 165-70 LID - 10.1111/eip.12190 [doi] AB - AIM: We examined the factor structure of the Positive and Negative Syndrome Scale (PANSS) in early-episode psychosis and its relationships with functioning at baseline and follow-up. METHODS: A total of 240 consecutive admissions to an early intervention in psychosis clinic were assessed at intake to the program with the PANSS, Global Assessment of Functioning (GAF) and Social and Occupational Functioning Assessment Scale (SOFAS). Seventy individuals were reassessed at follow-up. A maximum likelihood factor analysis was conducted on baseline PANSS scores and the ability of each factor to predict baseline and follow-up GAF and SOFAS was examined. RESULTS: A five-factor model with varimax rotation was the best fit to our data and was largely congruent with factors found previously. The negative symptom factor was the best predictor of GAF and SOFAS at baseline and follow-up. CONCLUSION: Negative symptoms are the best symptomatic predictor of functioning in individuals with early psychosis and are an important treatment target to improve recovery. CI - (c) 2014 Wiley Publishing Asia Pty Ltd. FAU - Best, Michael W AU - Best MW AD - Department of Psychology, Queen's University, Kingston, Ontario, Canada. FAU - Grossman, Michael AU - Grossman M AD - Department of Psychology, Queen's University, Kingston, Ontario, Canada. FAU - Oyewumi, L Kola AU - Oyewumi LK AD - Department of Psychiatry, Queen's University, Kingston, Ontario, Canada. AD - Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada. FAU - Bowie, Christopher R AU - Bowie CR AD - Department of Psychology, Queen's University, Kingston, Ontario, Canada. AD - Department of Psychiatry, Queen's University, Kingston, Ontario, Canada. AD - Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada. LA - eng PT - Journal Article DEP - 20141002 PL - Australia TA - Early Interv Psychiatry JT - Early intervention in psychiatry JID - 101320027 SB - IM MH - Adolescent MH - Adult MH - Early Diagnosis MH - Factor Analysis, Statistical MH - Female MH - Humans MH - Male MH - Middle Aged MH - Predictive Value of Tests MH - *Psychiatric Status Rating Scales MH - Psychotic Disorders/*diagnosis MH - Young Adult OTO - NOTNLM OT - early psychosis intervention OT - factor analysis OT - psychotic disorder OT - schizophrenia OT - symptom EDAT- 2014/10/04 06:00 MHDA- 2016/12/17 06:00 CRDT- 2014/10/04 06:00 PHST- 2014/04/14 00:00 [received] PHST- 2014/08/19 00:00 [accepted] PHST- 2014/10/04 06:00 [entrez] PHST- 2014/10/04 06:00 [pubmed] PHST- 2016/12/17 06:00 [medline] AID - 10.1111/eip.12190 [doi] PST - ppublish SO - Early Interv Psychiatry. 2016 Apr;10(2):165-70. doi: 10.1111/eip.12190. Epub 2014 Oct 2.