TY - JOUR
T1 - Confirmatory factor analyses of posttraumatic stress symptoms in deployed and nondeployed veterans of the Gulf war
AU - Simms, Leonard J.
AU - Watson, David
AU - Doebbeling, Bradley N.
PY - 2002/11
Y1 - 2002/11
N2 - Confirmatory factor analysis was used to compare 6 models of posttraumatic stress disorder (PTSD) symptoms, ranging from 1 to 4 factors, in a sample of 3,695 deployed Gulf War veterans (N = 1,896) and nondeployed controls (N = 1,799). The 4 correlated factors-intrusions, avoidance, hyperarousal, and dysphoria-provided the best fit. The dysphoria factor combined traditional markers of numbing and hyperarousal. Model superiority was cross-validated in multiple subsamples, including a subset of deployed participants who were exposed to traumatic combat stressors. Moreover, convergent and discriminant validity correlations suggested that intrusions may be relatively specific to PTSD, whereas dysphoria may represent a nonspecific component of many disorders. Results are discussed in the context of hierarchical models of anxiety and depression.
AB - Confirmatory factor analysis was used to compare 6 models of posttraumatic stress disorder (PTSD) symptoms, ranging from 1 to 4 factors, in a sample of 3,695 deployed Gulf War veterans (N = 1,896) and nondeployed controls (N = 1,799). The 4 correlated factors-intrusions, avoidance, hyperarousal, and dysphoria-provided the best fit. The dysphoria factor combined traditional markers of numbing and hyperarousal. Model superiority was cross-validated in multiple subsamples, including a subset of deployed participants who were exposed to traumatic combat stressors. Moreover, convergent and discriminant validity correlations suggested that intrusions may be relatively specific to PTSD, whereas dysphoria may represent a nonspecific component of many disorders. Results are discussed in the context of hierarchical models of anxiety and depression.
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U2 - 10.1037/0021-843X.111.4.637
DO - 10.1037/0021-843X.111.4.637
M3 - Article
C2 - 12428777
AN - SCOPUS:0036828717
SN - 0021-843X
VL - 111
SP - 637
EP - 647
JO - Journal of Abnormal Psychology
JF - Journal of Abnormal Psychology
IS - 4
ER -