Koenen K C, Stellman S D, Dohrenwend B P, Sommer J F, Stellman J M
Department of Society, Human Development, and Health, Harvard School of Public Health, Boston, MA, USA.
J Trauma Stress. 2007 Feb;20(1):3-13. doi: 10.1002/jts.20191.
Self-reports of traumatic events are often used in clinical and epidemiologic studies. Nevertheless, research suggests combat exposure reports may be biased by posttraumatic stress disorder (PTSD) symptom severity, leading to an inflated dose-response relation between combat exposure and PTSD. The authors examined the consistency in combat exposure reports and their relation to PTSD symptoms in Vietnam Veteran American Legionnaires who responded to two mailed surveys (1984, 1998; N = 1,462). Combat exposure reports were highly reliable (test-retest correlation = 0.87). However, changes in exposure reporting were related to changes in PTSD symptoms, specifically reexperiencing symptoms. The effect size of the dose-response relation attributable to changes in reporting was smaller for continuous than categorical measures. Findings are discussed in relation to recent controversies over veterans' combat exposure reports.
创伤事件的自我报告常用于临床和流行病学研究。然而，研究表明，战斗暴露报告可能受到创伤后应激障碍（PTSD）症状严重程度的影响而存在偏差，从而导致战斗暴露与PTSD之间的剂量反应关系被夸大。作者调查了对两份邮寄调查问卷（1984年、1998年；N = 1462）做出回应的越战退伍美国军团成员的战斗暴露报告的一致性及其与PTSD症状的关系。战斗暴露报告高度可靠（重测相关系数 = 0.87）。然而，暴露报告的变化与PTSD症状的变化有关，特别是再体验症状。连续测量中因报告变化导致的剂量反应关系的效应大小小于分类测量。本文结合近期关于退伍军人战斗暴露报告的争议对研究结果进行了讨论。
