Advanced

Development and validation of the Fast Assessment in Acute Treatment of Psychosis-Observation Rating Scale (FAST-O)

Lindstrom, Eva; Koernig, Thomas; Tuninger, Eva LU and Levander, Sten LU (2011) In International Journal of Psychiatry in Clinical Practice 15(3). p.180-195
Abstract
Objectives. There is a need for an observation scale for assessment and monitoring of acutely psychotic patients. Milestones based on such ratings should be defined, similar to the PANSS-based Remission criteria. FAST-O is such an instrument (11 items and a CGI rating). Methods. Reliability, validity and factor structure were analyzed in four separate studies-most importantly in one study of 33 chronic forensic in-patients rated concurrently by three independent raters, and another study of 91 Psychiatric Intensive Care Units patients and 20 newly admitted forensic patients, rated twice, each time by two independent raters. Results. The factor structure was simple, two factors and an orphan item (Depression). Reliability was adequate on... (More)
Objectives. There is a need for an observation scale for assessment and monitoring of acutely psychotic patients. Milestones based on such ratings should be defined, similar to the PANSS-based Remission criteria. FAST-O is such an instrument (11 items and a CGI rating). Methods. Reliability, validity and factor structure were analyzed in four separate studies-most importantly in one study of 33 chronic forensic in-patients rated concurrently by three independent raters, and another study of 91 Psychiatric Intensive Care Units patients and 20 newly admitted forensic patients, rated twice, each time by two independent raters. Results. The factor structure was simple, two factors and an orphan item (Depression). Reliability was adequate on item (>0.75) as well as scale (>0.85) level. There was no bias related to the rater's professional background. The instrument was sensitive to change. Percentile-based algorithms allow characterization of patients and groups. Tentative treatment milestones are defined; a clinical state "half-way" between the acute state and remission. Conclusions. FAST-O is a reliable, valid and easy to implement observation scale for patients with a psychotic illness, which can be used without bias by all staff. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Rating scales, observational, psychosis, schizophrenia, forensic, milestone
in
International Journal of Psychiatry in Clinical Practice
volume
15
issue
3
pages
180 - 195
publisher
Informa Healthcare
external identifiers
  • wos:000293921600004
  • scopus:84860389428
ISSN
1471-1788
DOI
10.3109/13651501.2011.582536
language
English
LU publication?
yes
id
216751c9-08eb-43a6-96af-624eb228dff1 (old id 2161997)
date added to LUP
2011-10-03 08:37:08
date last changed
2017-01-01 03:43:42
@article{216751c9-08eb-43a6-96af-624eb228dff1,
  abstract     = {Objectives. There is a need for an observation scale for assessment and monitoring of acutely psychotic patients. Milestones based on such ratings should be defined, similar to the PANSS-based Remission criteria. FAST-O is such an instrument (11 items and a CGI rating). Methods. Reliability, validity and factor structure were analyzed in four separate studies-most importantly in one study of 33 chronic forensic in-patients rated concurrently by three independent raters, and another study of 91 Psychiatric Intensive Care Units patients and 20 newly admitted forensic patients, rated twice, each time by two independent raters. Results. The factor structure was simple, two factors and an orphan item (Depression). Reliability was adequate on item (>0.75) as well as scale (>0.85) level. There was no bias related to the rater's professional background. The instrument was sensitive to change. Percentile-based algorithms allow characterization of patients and groups. Tentative treatment milestones are defined; a clinical state "half-way" between the acute state and remission. Conclusions. FAST-O is a reliable, valid and easy to implement observation scale for patients with a psychotic illness, which can be used without bias by all staff.},
  author       = {Lindstrom, Eva and Koernig, Thomas and Tuninger, Eva and Levander, Sten},
  issn         = {1471-1788},
  keyword      = {Rating scales,observational,psychosis,schizophrenia,forensic,milestone},
  language     = {eng},
  number       = {3},
  pages        = {180--195},
  publisher    = {Informa Healthcare},
  series       = {International Journal of Psychiatry in Clinical Practice},
  title        = {Development and validation of the Fast Assessment in Acute Treatment of Psychosis-Observation Rating Scale (FAST-O)},
  url          = {http://dx.doi.org/10.3109/13651501.2011.582536},
  volume       = {15},
  year         = {2011},
}