@article{ref1,
title="Latent structure of the proposed ICD-11 post-traumatic stress disorder symptoms: implications for the diagnostic algorithm",
journal="British journal of psychiatry",
year="2015",
author="Forbes, David and Lockwood, Emma and Creamer, Mark and Bryant, Richard A. and McFarlane, Alexander C. and Silove, Derrick and Nickerson, Angela and O'Donnell, Meaghan",
volume="206",
number="3",
pages="245-251",
abstract="Background The latent structure of the proposed ICD-11 post-traumatic stress disorder (PTSD) symptoms has not been explored. Aims To investigate the latent structure of the proposed ICD-11 PTSD symptoms. <br><br>METHOD Confirmatory factor analyses using data from structured clinical interviews administered to injury patients (n = 613) 6 years post-trauma. Measures of disability and psychological quality of life (QoL) were also administered. <br><br>RESULTS Although the three-factor model implied by the ICD-11 diagnostic criteria fit the data well, a two-factor model provided equivalent, if not superior, fit. Whereas diagnostic criteria based on this two-factor model resulted in an increase in PTSD point prevalence (5.1% v. 3.4%; z = 2.32, P<0.05), they identified individuals with similar levels of disability (P = 0.933) and QoL (P = 0.591) to those identified by the ICD-11 criteria. <br><br>CONCLUSIONS Consistent with theorised reciprocal relationships between re-experiencing and avoidance in PTSD, these findings support an alternative diagnostic algorithm requiring at least two of any of the four re-experiencing/avoidance symptoms and at least one of the two hyperarousal symptoms.<p /> <p>Language: en</p>",
language="en",
issn="0007-1250",
doi="10.1192/bjp.bp.114.150078",
url="http://dx.doi.org/10.1192/bjp.bp.114.150078"
}