title: The Chinese version of the Davidson Trauma Scale: a practice test for validation.
abstract: The Chinese version of the Davidson Trauma Scale (DTS-C) was developed to respond to the need of Chinese-speaking individuals. The DTS is a validated self-rating scale used in the diagnosis of posttraumatic stress disorder (PTSD). The DTS-C is translated from DTS through a two-stage translation. Subjects were drawn from a sample of 210 survivors of the 21 September 1999, Chi-Chi Earthquake. The scale showed good internal consistency (Cronbach's alpha = 0.97) and test-retest reliability (r = 0.88). Concurrent validity was obtained against the clinical diagnostic interview, with a diagnostic accuracy of 0.85 at DTS-C score of 44. It showed that the sensitivity was 0.9, specificity 0.81, positive likelihood ratio 4.74, and negative likelihood ratio 0.12. The recommended stratum-specific likelihood ratios were 0.10 (95% CI: 0.05-0.20) for the score range 0-39, 4 (2.22-7.23) for the score range of 40-59, and 6.14 (3.42-11.02) for the scores above 60. In PTSD diagnosed subjects, the factor structures closely resembled the DSM-IV grouping of PTSD symptoms. The psychometric strength of DTS-C is reliable for its future use, particularly for screening for subjects with possible diagnosis of PTSD.
authors.affiliation: Department of Psychiatry, Tsao-Tun Psychiatric Center, Nantao, Taiwan.
authors.forename: C H
authors.initials: CH
authors.lastname: Chen
authors.forename: S K
authors.initials: SK
authors.lastname: Lin
authors.forename: H S
authors.initials: HS
authors.lastname: Tang
authors.forename: W W
authors.initials: WW
authors.lastname: Shen
authors.forename: M L
authors.initials: ML
authors.lastname: Lu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D004190:Disasters; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics; D015203:Reproducibility of Results; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000208:ethnology / Q000523:psychology; D017741:Survivors / Q000523:psychology*; D013624:Taiwan