Background: In this study, the first to examine psychometrics of a Haitian Kreyòl version of the Trauma Symptom Checklist-40 (TSC-40), we investigated trauma symptoms in survivors of Haiti's 2010 earthquake who reside in Haiti's Cité Soleil slum, a violent neighborhood where non-partner sexual violence (NPSV) is rampant and whose residents are historically underrepresented in research.
Methods: 233 women and 280 men 18 years or older completed the TSC-40. Differential Item Function (DIF) analysis was performed on the TSC-40 responses for women and men. We examined symptom counts by gender, between NPSV victims and non-victims, and by interaction between gender and NPSV experience.
Results: We identified a reduced pool of 17-items that exhibited no gender bias. This 17-item index showed acceptable internal consistency reliability (α = 0.87). Employing this index, average symptom counts for women (x¯ = 11.3) did not differ from men (x¯= 11.1). Average symptom counts for NPSV victims was greater (x¯ = 12.5) than for non-victims (x¯= 10.7). The gender by experience of NPSV interaction indicated that women victims had the highest symptom counts (x¯=14.0).
Limitations: We used non-probability sampling, and data were from self-reports collected in a cross-sectional survey.
Conclusions: Observed differences in trauma burden are likely to be misleading if instruments are administered without regard to DIF. We contribute a Haitian Kreyòl Trauma Symptom 17-item index, which offers clinicians/practitioners in Haiti the opportunity to use a valid and reliable measure of enduring trauma symptoms validated in Haiti.
Keywords: Differential item function (DIF); Haiti; NPSV; Non-partner sexual violence; Psychometrics; Trauma symptom checklist (TSC-40).
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