David Forbes1, Emma Lockwood1, Mark Creamer1, Richard A Bryant1, Alexander C McFarlane1, Derrick Silove1, Angela Nickerson1, Meaghan O'Donnell1. 1. David Forbes, PhD, Emma Lockwood, PGDipPsych, Mark Creamer, PhD, Australian Centre For Posttraumatic Mental Health and Department of Psychiatry, University of Melbourne, Victoria; Richard A. Bryant, PhD, School of Psychology, University of New South Wales, New South Wales; Alexander C. McFarlane, MD, Centre for Traumatic Stress Studies, University of Adelaide, South Australia; Derrick Silove, MD, School of Psychiatry, University of New South Wales, New South Wales; Angela Nickerson, PhD, School of Psychology, University of New South Wales, New South Wales; Meaghan O'Donnell, PhD, Australian Centre for Posttraumatic Mental Health and Department of Psychiatry, University of Melbourne, Victoria, Australia.
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. 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. 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. 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. Royal College of Psychiatrists.
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. METHOD: Confirmatory factor analyses using data from structured clinical interviews administered to injurypatients (n = 613) 6 years post-trauma. Measures of disability and psychological quality of life (QoL) were also administered. 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. 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. Royal College of Psychiatrists.
Authors: Maj Hansen; Philip Hyland; Karen-Inge Karstoft; Henrik B Vaegter; Rikke H Bramsen; Anni B S Nielsen; Cherie Armour; Søren B Andersen; Mette Terp Høybye; Simone Kongshøj Larsen; Tonny E Andersen Journal: Eur J Psychotraumatol Date: 2017-11-13
Authors: Mark Shevlin; Philip Hyland; Neil P Roberts; Jonathan I Bisson; Chris R Brewin; Marylene Cloitre Journal: Eur J Psychotraumatol Date: 2018-01-17