TY  - JOUR
PY  - 2011//
TI  - Longitudinal invariance of posttraumatic stress disorder symptoms in adolescent earthquake survivors
JO  - Journal of anxiety disorders
A1  - Wang, Mengcheng
A1  - Elhai, Jon D.
A1  - Dai, Xiaoyang
A1  - Yao, Shuqiao
SP  - 263
EP  - 270
VL  - 26
IS  - 2
N2  - The present study examined the invariance of four models of posttraumatic stress disorder symptoms (PTSD) across time through an analysis of symptom ratings from the PTSD Checklist-Civilian version. Participants included 403 junior middle school students recruited from Sichuan, China at 5 and 11 months after the 2008 Sichuan earthquake. Confirmatory factor analysis using measurement and structural invariance testing found that four tested models were non-invariant (i.e., different) over time on PTSD's variable intercepts (indicating symptom severity) and residual error variances, but were invariant on PTSD's factor loadings and structural parameters. The two 4-factor intercorrelated models and the newly proposed 5-factor model were superior to the model defined in DSM-IV; however, the best fitting model was the newest proposed 5-factor model. These findings extend our understanding of PTSD's factor structure that the factor structure may be quite stable over time.<p />  <p>Language: en</p>
LA  - en
SN  - 0887-6185
UR  - http://dx.doi.org/10.1016/j.janxdis.2011.12.009
ID  - ref1
ER  -