School of Psychiatry, University of New South Wales and Centre for Population Mental Health Research, Sydney South West Area Health Service
School of Psychiatry, University of New South Wales and Centre for Population Mental Health Research, Sydney South West Area Health Service
Service for the Treatment and Rehabilitation of Torture and Trauma Survivors, New South Wales
School of Psychiatry, University of New South Wales and Centre for Population Mental Health Research, Sydney South West Area Health Service, Sydney, Australia
Correspondence: Zachary Steel, Psychiatry Research and Teaching Unit, Level 4, Health Services Building, Liverpool Hospital, Liverpool, NSW 2170, Australia. Tel: +61 2 9828 4902; fax: +61 2 9828 4910; e-mail: z.steel{at}unsw.edu.au
Declaration of interest None. Funding detailed in Acknowledgement.
|
|
|---|
Aims To investigate the longer-term mental health effects of mandatory detention and subsequent temporary protection on refugees.
Method Lists of names provided by community leaders were supplemented by snowball sampling to recruit 241 Arabic-speaking Mandaean refugees in Sydney (60% of the total adult Mandaean population). Interviews assessed post-traumatic stress disorder (PTSD), major depressive episodes, and indices of stress related to past trauma, detention and temporary protection.
Results A multilevel model which included age, gender, family clustering, pre-migration trauma and length of residency revealed that past immigration detention and ongoing temporary protection each contributed independently to risk of ongoing PTSD, depression and mental health-related disability. Longer detention was associated with more severe mental disturbance, an effect that persisted for an average of 3 years after release.
Conclusions Policies of detention and temporary protection appear to be detrimental to the longer-term mental health of refugees.
|
|
|---|
|
|
|---|
Sampling
No census or immigration figures were available for the Mandaean minority
in Sydney. Community leaders estimated that there were fewer than 400
Arabic-speaking Mandaean adults living in the city. Sampling of very small and
dispersed populations such as the Mandaeans creates formidable methodological
challenges (Spring et al,
2003) with random or small-area based probability sampling frames
not being feasible. It was important, nevertheless, that the sampling frame
adopted had an equal probability of capturing those with permanent and those
with temporary protection visas.
Community leaders provided lists of Arabic-speaking Mandaeans and 76 families (172 adults) living in Sydney were identified. To widen the sample beyond those in contact with community groups, snowball or linkage sampling (Patrick et al, 1998) was used, in which primary respondents were asked to provide the names and contact details of other Mandaean families. This procedure identified an additional 38 families (96 adults). The final sample comprised 241 Mandaeans (90% individual response rate for those contacted) living in 104 house-holds (91% household response rate). Based on estimates by community leaders, the sample represented 60% of Arabic-speaking Mandaean adults living in Sydney.
Measures
The study applied two psychometrically tested symptom measures: the Harvard
Trauma Questionnaire (HTQ; Mollica et
al, 1992), which assesses exposure to refugee-related trauma
and associated PTSD symptoms, and the Hopkins Symptom Checklist - 25 (HSCL;
Mollica et al, 1987),
an instrument that records symptoms of depression and anxiety. The measures
yield both continuous scores and diagnostic categories (PTSD and major
depressive episode, respectively) based on established DSM-IV-derived
algorithms (Mollica et al,
2001). The Medical Outcomes Study - Short Form (SF-12;
Gandek et al, 1998) is
a widely used international instrument that provides a measure of physical
(Physical Component Score; PCS) and mental (Mental Component Score; MCS)
health status and disability. We applied the MCS, which is usually scored
according to four disability levels: none (50 or above); mild (40-49);
moderate (30-39); and severe (below 29)
(Sanderson & Andrews,
2003).
Three additional measures were developed by the research team: (a) the Post-migration Living Difficulties (PMLD) Checklist, which identifies ongoing stresses that discriminate between refugee and asylum-seeker populations (Silove et al, 1998); (b) the Detention Experiences Checklist, which details 64 common adverse experiences specific to the detention environment and which has been piloted among detained families (Steel et al, 2004); and (c) the Detention Symptom Checklist, a modification of the HTQ (Mollica et al, 1992), which relates symptoms specifically to the detention experience (Steel et al, 2004).
Translation-back-translation
Translation of measures into Arabic was undertaken using established
translation and masked back-translation procedures
(Bontempo, 1993). The original
questionnaires were translated by an Arabic-speaking mental health
professional and back-translated by a certified Arabic-speaking healthcare
interpreter. Two Arabic-speaking mental health professionals reconciled some
minor discrepancies identified by the process.
Procedure
Approval for the study was obtained from the South West Sydney Area Health
Service Human Ethics Committee. A research assistant, a nurse practitioner of
Mandaean background, made contact with families and individual participants.
After consent was obtained, the research assistant visited respondents in
their homes and administered the measures.
Data analysis
Preliminary univariate analyses using the Statistical Package for the
Social Sciences (SPSS) version 11.5 for Windows were applied to assess for
differences across comparison groups in levels of trauma exposure,
post-migration stresses, detention experiences and psychiatric morbidity using
2 analysis for categorical variables and analysis of variance
(ANOVA) for numeric variables. Since key predictor variables varied in their
frequency across comparison groups and because participants were clustered in
family groupings (Goldstein,
1995), we next applied multilevel modelling using MLwiN 1.1
(Rasbash et al,
2001). The purpose of this was to establish whether detention and
temporary protection status exerted independent effects on psychiatric
symptoms when accounting for family clustering and other predictors and
covariates identified by the univariate analysis.
|
|
|---|
|
View this table: [in a new window] |
Table 1 Characteristics of Mandaean sample (n=241)
|
Univariate analyses
Pre-migration trauma
Table 2 shows the extent and
nature of pre-migration trauma experiences as measured by the HTQ in holders
of temporary and permanent visas. Holders of the former had experienced more
traumas than holders of the latter, including death of family and friends,
being close to death (i.e. almost dying) and lacking the basic necessities of
life. This difference may reflect the increasing persecution of Mandaeans in
Iraq leading up to and following the 2003 war.
|
View this table: [in a new window] |
Table 2 Lifetime exposure to trauma in holders of temporary (n=139) and
permanent visa (n=102) (n=241)
|
Post-migration living difficulties
Table 3 shows the causes of
serious stress in the temporary and permanent visa holders. Holders of
temporary visas reported greater stress for the majority of items. Consistent
with their status, they continued to live in fear of repatriation, were unable
to resolve family separations and struggled more with issues of day-to-day
living.
|
View this table: [in a new window] |
Table 3 Serious or very serious living difficulties reported in the previous 12
months by holders of temporary (n=139) and permanent visas
(n=102)
|
Immigration detention experiences
The majority of temporary visa holders (124 out of 139, 90%) and 30% of
permanent-visa holders (30 out of 102) had been held in immigration detention
centres on arrival in Australia. Table
4 includes all those held in detention and details the 20
highest-ranking adverse experiences that caused serious or very serious stress
while confined. The results are stratified in terms of short detention (0-5
months) and long detention (
6 months) based on the median time spent in
detention (6 months). Although groups with short- and long-term detention both
reported substantial stress, the latter group scored higher on almost all
items (total score=21.3, s.d.=10.4 v. 9.8, s.d.=10.1).
|
View this table: [in a new window] |
Table 4 Twenty most frequently reported negative detention experiences causing
serious/very serious stress, stratified by duration of detention
|
Immigration detention symptoms
Table 5 shows the traumatic
stress symptoms associated with negative detention experiences. Even though
the mean time since release from detention was nearly 3 years (35.5 months),
the group detained for
6 months reported more severe distress for all nine
symptoms.
|
View this table: [in a new window] |
Table 5 Traumatic stress symptoms experienced in previous week related to past
detention
|
Psychiatric status and disability
Figures 1 and
2 display the univariate
results for depression, PTSD and mental health-related disability according to
residency status and length of detention respectively. The HTQ and HSCL were
analysed according to the standard algorithms to yield diagnoses of PTSD and
major depressive episode respectively. The standard cut-off on the MCS was
applied for moderate-to-severe mental health-related (MCS) disability. Holders
of temporary protection visas had higher rates of depression, PTSD and
disability than those with permanent visas. Those who had experienced
long-term detention also continued to experience greater rates of depression,
PTSD and MCS disability.
![]() View larger version (11K): [in a new window] [as a PowerPoint slide] |
Fig. 1 Prevalence of depression, post-traumatic stress disorder (PTSD) and mental
health-related disability in permanent (n=102) and temporary
(n=139) residents.
|
![]() View larger version (14K): [in a new window] [as a PowerPoint slide] |
Fig. 2 Prevalence of depression, post-traumatic stress disorder (PTSD) and mental
health-related disability in those not detained (n=91), those
detained for 1-5 months (n=57) and those detained for 6 months
(n=93).
|
Prediction of psychiatric status and disability
Three multilevel models were calculated using continuous scores for PTSD,
depression and MCS disability respectively. Level one predictor variables were
age, gender, number of traumas prior to arrival, months in detention (0 for
those not detained), residency status (temporary or permanent visa) and months
living in the community (i.e. post-detention or post-immigration length of
stay in Australia). The level two variable was family clustering.
Variables excluded on the basis of preliminary analyses were number of detention experiences (Table 4) and detention-specific symptoms (Table 5), since these correlated highly (r=0.72 and r=0.70 respectively) with the duration of detention. Similarly, indices of post-migration living difficulties were strongly related to temporary protection status and hence made no additional contribution as predictors.
Table 6 displays the key characteristics of the multilevel regression analysis, with each model emerging as statistically significant. The R2 estimates indicate that the overall models account for a substantial proportion of the variance for each dependent variable, although more so for PTSD and depression than for MCS disability. Intraclass correlation coefficients show the level of family clustering for each dependent variable, with the family variance partition coefficient indicating that nearly 30% of the symptom measures and 20% of the disability measures were accounted for by family clustering. Calculation of standardised regression weights (ß) allowed for direct comparison of the magnitude of the effect of each predictor variable. After including the effects of age, gender, previous trauma exposure, family composition and length of residency, time in detention and temporary protection status made an equal and substantial contribution to psychiatric morbidity and disability.
|
View this table: [in a new window] |
Table 6 Multilevel regression models assessing predictors of post-traumatic stress
disorder (PTSD), depression and mental health-related disability (from the
Mental Component Score (MCS) of the SF-12)
(n=241)1
|
A subsidiary analysis showed that those who had no family in Australia (a proxy measure for family isolation) were at greater risk for depression and PTSD than those living in families of three or more persons. Families consisting of two available members fell into an intermediate risk category (F2,238=3.82, P<0.05 for depression and F2.237=4.09, P<0.05 for PTSD).
|
|
|---|
The present study suggests that both prolonged detention and temporary protection contribute substantially to the risk of ongoing depression, PTSD and mental health-related disability in refugees. The independent influence of these two risk factors remained robust after controlling for other variables previously identified as risk factors (de Jong et al, 2001), including female gender, greater age, extent of past traumas, length of residency and family separation.
Limitations of the study design
Before interpreting the results in greater detail, limitations of the study
design require consideration. A population-wide probabilistic sampling method
was not feasible because of the minority status and dispersal of the target
group. It is possible that community members with the most severe mental
disturbances were more likely to respond, although previous research suggests
that greater community contact is a protective factor against emotional
distress (Steel et al,
1999). It is also noteworthy that the rates of PTSD and depression
fall within the limits of prevalence data in other groups of asylum seekers
and refugees studied in Australia and other resettlement countries
(Hobbs et al, 2002;
Silove et al, 2002).
Furthermore, Goodman (1961)
argued that snowball sampling, although not ideal for establishing absolute
prevalence rates, is appropriate for comparing subgroups within samples, the
key focus of the present study.
Transcultural measurement issues must be considered as a potential source of error. We applied a standard translation and masked back-translation method, reconciling minor semantic and linguistic differences with the assistance of two Arabic-speaking mental health professionals. The relationships yielded between key variables provided indirect support for the validity of the measures. For example, we replicated the well-established dose-response relationship between trauma exposure and mental disorder, a finding that is robust across the majority of published studies (e.g. Hauff & Vaglum, 1994; Mollica et al, 1998).
Recall bias is always a potential confounding variable, particularly when reporting past traumatic events. An important recent study (Herlihy et al, 2002) has shown that refugees remain consistent in reporting major traumatic events such as those we recorded, with more variability occurring in recall of minor historical details. The higher levels of trauma reported by holders of temporary protection visas who have arrived more recently in Australia was consistent with a history of escalating violence and persecution directed at the Mandaean group in Iraq in the lead-up to the 2003 war.
At the same time it may be argued that holders of temporary visas are prone to exaggerating their plight, a potentially self-serving bias motivated by the hope of advancing future claims for extension of their visas. Although this cannot be ruled out entirely, the anonymous nature of the study meant that there was no direct personal gain resulting from participation. Holders of temporary visas were not currently applying for extensions visa, so that further documentation at the time of the study was not directly useful. Furthermore, the criteria used by immigration officials in judging the need for further protection focus principally on risk of future persecution, not on past history or ongoing living difficulties, the subject of our study.
Although the shared cultural, historical and political experiences of the permanent and temporary visa holders strengthened the comparisons, the focus on a single refugee population potentially limits the generalisability of the findings, making it important for future studies to replicate our results in other cultural groups.
Longer-term mental health impact of detention
Our study suggests that prolonged detention exerts a long-term impact on
the psychological well-being of refugees. Refugees recording adverse
conditions in detention centres also reported persistent sadness,
hopelessness, intrusive memories, attacks of anger and physiological
reactivity, which were related to the length of detention. Previous studies
examining the effects of detention concur with our findings
(Steel & Silove, 2001;
Sultan & O'Sullivan, 2001;
Keller et al, 2003),
although our study is the first to show that such mental health effects
persist for a prolonged period after detention. These effects were independent
of other established predictors of psychiatric morbidity in refugees, such as
past exposure to trauma and recency of arrival
(Steel et al, 2002).
The present findings provide systematic support for the observations of
successive commissions of inquiry undertaken in Australia
(Human Rights and Equal Opportunity
Commission, 1998; Office of
the High Commissioner for Human Rights, 2002) that have raised
repeated concerns about the mental health effects of prolonged detention.
Temporary protection
The present study is the first to investigate the specific effects of
temporary protection on the mental health of refugees. In the past refugee
settlement countries such as Australia have offered permanent residency to
refugees according to the 1951 United Nations Convention and Australia
continues to administer a separate programme of permanent resettlement for a
quota of refugees screened in other countries. Permanent protection means that
previously traumatised refugees are given certainty about their futures,
allowing them to plan their lives with a substantial level of security. A
recent epidemiological study undertaken among Vietnamese refugees in Australia
(Steel et al, 2002)
has provided evidence that permanent residency is associated with improvement
in the mental status of previously traumatised individuals.
In contrast, the present study adds to evidence (Silove et al, 2000) that insecure residency and associated fears of repatriation contribute to the persistence of psychiatric symptoms and associated disabilities in refugees. Temporary protection status was strongly associated with daily stresses related to financial and work difficulties, and problems in accessing healthcare, language classes and other educational opportunities. Countries considering the adoption of temporary protection regimes therefore need to consider how such provisions may undermine the sense of security that seems to be essential for refugees to recover from trauma-related psychiatric symptoms.
Family factors
The multilevel modelling analysis indicated that there was a concentration
of mental distress within family groups. Risk of mental illness was lower in
larger family units, whereas those refugees who were isolated from other
family members were more likely to experience severe psychiatric symptoms.
Temporary protection status in Australia specifically denies refugees the
right to family reunion and prevents holders from re-entering Australia if
they travel overseas, making direct contact with families in other countries
effectively impossible. The common consequence is prolonged separations that
compound the disruptive effects on families of past persecution
(Silove et al, 2000).
Our findings therefore highlight the need to consider carefully the impact of
refugee policy changes on family unity and the potential risk that enforced
family separations may result in prolonged mental disorder in isolated
refugees.
|
|
|---|
LIMITATIONS
|
|
|---|
|
|
|---|
Related articles in BJP:
This article has been cited by other articles:
![]() |
Z. Steel, T. Chey, D. Silove, C. Marnane, R. A. Bryant, and M. van Ommeren Association of Torture and Other Potentially Traumatic Events With Mental Health Outcomes Among Populations Exposed to Mass Conflict and Displacement: A Systematic Review and Meta-analysis JAMA, August 5, 2009; 302(5): 537 - 549. [Abstract] [Full Text] [PDF] |
||||
![]() |
V. Johnston, K. Vasey, and M. Markovic Social policies and refugee resettlement: Iraqis in Australia Critical Social Policy, May 1, 2009; 29(2): 191 - 215. [Abstract] [PDF] |
||||
![]() |
K. Robjant, R. Hassan, and C. Katona Mental health implications of detaining asylum seekers: systematic review The British Journal of Psychiatry, April 1, 2009; 194(4): 306 - 312. [Abstract] [Full Text] [PDF] |
||||
![]() |
H. McColl, K. McKenzie, and K. Bhui Mental healthcare of asylum-seekers and refugees Adv. Psychiatr. Treat., November 1, 2008; 14(6): 452 - 459. [Abstract] [Full Text] [PDF] |
||||
![]() |
I. Leudar, J. Hayes, J. Nekvapil, and J. Turner Baker Hostility themes in media, community and refugee narratives Discourse Society, March 1, 2008; 19(2): 187 - 221. [Abstract] [PDF] |
||||
![]() |
D. Silove, P. Austin, and Z. Steel No Refuge from Terror: The Impact of Detention on the Mental Health of Trauma-affected Refugees Seeking Asylum in Australia Transcultural Psychiatry, September 1, 2007; 44(3): 359 - 393. [Abstract] [PDF] |
||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||