Dose-effect relationships of trauma to symptoms of depression and post-traumatic stress disorder among Cambodian survivors of mass violence

BACKGROUND

The dose-effect relationships of cumulative trauma to the psychiatric symptoms of major depression and post-traumatic stress disorder (PTSD) in a community study of Cambodian survivors of mass violence were evaluated.

METHOD

In 1990, a survey of 1000 households was conducted in a Thai refugee camp (Site 2) using a multi-stage random sampling design. Trauma history and psychiatric symptoms were assessed for two time periods. Analysis used linear dose-response regression modelling.

RESULTS

993 Cambodian adults reported a mean of 14 Pol Pot era trauma events and 1.3 trauma events during the past year. Symptom categories of depression, PTSD, dissociative and culturally dependent symptoms exhibited strong dose-effect responses with the exception of avoidance. All symptom categories, except avoidant symptoms, were highly correlated.

CONCLUSIONS

Cumulative trauma continued to affect psychiatric symptom levels a decade after the original trauma events. The diagnostic validity of PTSD criteria, with the notable exception of avoidance, was supported. Inclusion of dissociative and culturally dependent symptoms increased the cultural sensitivity of PTSD.

Effects of war trauma on Cambodian refugee adolescents' functional health and mental health status

OBJECTIVE

To measure the effect of war trauma on the functional health and mental health status of Cambodian adolescents living in a refugee camp on the Thai-Cambodian border.

METHOD

A multistage probability sample identified 1,000 households in the camp known as Site Two. Interviews were conducted in each household with randomly selected adults 18 years of age and older. All adolescents aged 12 and 13 years old, along with one parent were interviewed. One hundred eighty-two adolescents (94 girls, 88 boys) and their parents participated. Culturally sensitive instruments were used including Cambodian versions of the Child Behavior Checklist (CBCL) and the Youth Self-Report (YSR).

RESULTS

Parents and adolescents reported the latter having experienced high levels of cumulative trauma, especially lack of food, water, and shelter. Mean Total Problem scores were in ranges similar to those of adolescents receiving clinical care in the United States, Netherlands, and Israel. Nearly 54% (53.8%) had Total Problem scores in the clinical range by parent report on the CBCL and 26.4% by adolescent report on the YSR. The most commonly reported symptoms were somatic complaints social withdrawal attention problems, anxiety, and depression. The dose-effect relationship between cumulative trauma and symptoms was strong for parent reporting on the CBCL; the subscales on both the YSR and CBCL for Anxious/Depressed and Attention Problems revealed dose-effect associations. Dose-effect relationships between cumulative trauma and social functioning or health status were lacking.

CONCLUSION

The high levels of emotional distress in this population of Cambodian adolescents and corresponding dose-effect relationships reveal the important negative psychosocial impact of violence on Cambodian adolescents. Lack of findings related to physical health status and the presence of positive social functioning of many youths should not deter health care providers and public health officials from diagnosing and treating underlying high levels of psychological distress.

The effect of trauma and confinement on functional health and mental health status of Cambodians living in Thailand-Cambodia border camps

OBJECTIVE

To assess the long-term impact of trauma and confinement on the functional health and mental health status of Cambodian displaced persons living on the Thailand-Cambodia border.

DESIGN

Household survey of 993 adults randomly selected from household rosters. Household sample selection by multistage area probability sample.

SETTING

Site 2, the largest Cambodian displaced-persons camp on the Thailand-Cambodia border.

PARTICIPANTS

Adults 18 years of age and older selected at random within households; 98% of eligible persons selected agreed to participate.

RESULTS

From 1975 through 1979 (Khmer Rouge regime), more than 85% reported lack of food, water, shelter, and medical care, brainwashing, and forced labor; 54% reported murder of a family member or friend; 36% reported torture; 18% reported head injury; and 17% reported rape or sexual abuse. During the refugee period between 1980 and 1990, 56% reported lack of food or water, 44% reported lack of shelter, 28% reported lack of medical care, 24% reported brainwashing, and 8% reported torture. Since 1980, reports of murder of a family member, head injury, and rape/sexual abuse have decreased to 5%. Reports of experiencing combat situations and shelling attacks have remained consistent between the two time periods, approximately 44% and 30%, respectively. From 1989 to 1990, 25% reported experiencing lack of food or water, and 5% to 10% reported serious injury, combat, and shelling conditions. More than 80% said they were in fair or poor health, felt depressed, and had a number of somatic complaints despite good access to medical services. Fifty-five percent and 15% had symptom scores that correlate with Western criteria for depression and posttraumatic stress disorder, respectively. Fifteen percent to 20% reported health impairments limiting activity, and moderate or severe bodily pain. Despite reported high levels of trauma and symptoms, social and work functioning were well preserved in the majority of respondents.

CONCLUSIONS

Reports of extensive trauma, poor health status, and depressive symptoms of this population are of concern in predicting future morbidity and mortality. The health and mental health needs of Cambodian displaced persons and their impact on social and economic behavior should be addressed now that the Cambodians have been repatriated.

Assessing symptom change in Southeast Asian refugee survivors of mass violence and torture

The authors evaluated changes in symptoms and levels of perceived distress of 21 Cambodian, 13 Hmong/Laotian, and 18 Vietnamese patients before and after a 6-month treatment period. Most of the patients improved significantly. Cambodians had the greatest and Hmong/Laotians had the least reductions in depressive symptoms. Although psychological symptoms improved, many somatic symptoms worsened. The authors conclude that refugee survivors of multiple traumata and torture can be aided by psychiatric care. They recommend investigations with larger samples and suitable control groups to further clarify the relative contributions of trauma, diagnosis, and acculturation stress to treatment outcome.