Is duration of residence a proxy for acculturation? The case of health risk behaviors among international immigrants.

AIMS: Among international immigrants, health changes by duration of residence are commonly interpreted as an expression of acculturation to the receiving country context. This study compares changes in immigrants' health risk behaviors by duration of residence to changes by acculturation levels, in order to assess whether duration of residence can be regarded as a proxy for acculturation. METHODS: Using data from a previous systematic review, we identified 17 quantitative studies examining changes in alcohol, tobacco and drug use, physical inactivity, and diet by both duration of residence and acculturation level in the same population. We compared the directionality and consistency of these associations through tabulation and vote counting. RESULTS: The majority of studies reported no or inconsistent changes in health risk behaviors by duration of residence versus by acculturation, including with opposite directionality. Four studies reported significant estimates with consistent directionality, while five reported consistent, non-significant estimates. CONCLUSIONS: Our findings suggest that duration of residence should not be used as a proxy for acculturation when studying health risk behaviors among immigrants. Researchers should consider additional time-dependent factors to explain behavioral changes by duration of residence.

Health outcomes in young adulthood among former child refugees in Denmark, Norway and Sweden: A cross-country comparative study.

AIMS: This study aimed at comparing several health outcomes in young adulthood among child refugees who settled in the different immigration and integration policy contexts of Denmark, Norway and Sweden. METHODS: The study population included refugees born between 1972 and 1997 who immigrated before the age of 18 and settled in the three Nordic countries during 1986-2005. This population was followed up in national registers during 2006-2015 at ages 18-43 years and was compared with native-born majority populations in the same birth cohorts using sex-stratified and age-adjusted regression analyses. RESULTS: Refugee men in Denmark stood out with a consistent pattern of higher risks for mortality, disability/illness pension, psychiatric care and substance misuse relative to native-born majority Danish men, with risk estimates being higher than comparable estimates observed among refugee men in Norway and Sweden. Refugee men in Sweden and Norway also demonstrated increased risks relative to native-born majority population men for inpatient psychiatric care, and in Sweden also for disability/illness pension. With the exception of increased risk for psychotic disorders, outcomes among refugee women were largely similar to or better than those of native-born majority women in all countries. CONCLUSIONS: The observed cross-country differences in health indicators among refugees, and the poorer health outcomes of refugee men in Denmark in particular, may be understood in terms of marked differences in Nordic integration policies. However, female refugees in all three countries had better relative health outcomes than refugee men did, suggesting possible sex differentials that warrant further investigation.

Investigating bottlenecks hampering the adoption of water quality-enhancing practices for sustainable land management in Ireland.

The scaling of adopted measures on farms is often proposed however, the factors that inform non-adoption of advised measures are typically overlooked. Better understanding of these factors could offer important insights for overcoming these bottlenecks and therefore offer important potential with respect to addressing agri-environmental challenges. We investigated the factors hampering the adoption of sustainable land management practices advised by the main agricultural extension of Ireland. A large qualitative dataset (N = 760) containing farmers' reasons for rejection of advised practices was analysed to identify bottlenecks for adoption. Our research showed that rejection can be explained by different underlying reasons. While subsidies exist for the implementation of sustainable land management practices, incentives to implement are insufficient and costs remain the main barrier for the adoption of the sustainable land management practices. Additionally, land ownership challenges and the aging farming population hamper the adoption of sustainable land management practices. Next to an analysis of the reasons for rejection of all advised practices, we investigated three often advised sustainable land management practices in-depth: implementation of riparian buffer zones, preventing cattle access to watercourses and implementation of a nutrient management plan. The differences in barriers for adoption between these practices showed the need for nuanced communication in order to enhance uptake. In order to reach water quality targets through enhanced uptake of sustainable land management practice, advice should be framed and tailored to farmer objectives.

Feasibility and performance of smartphone-based daily micro-surveys among patients recovering from cancer surgery.

AIMS: Daily micro-surveys, or the high-frequency administration of patient-reported outcome measures (PROMs), may provide real-time, unbiased assessments of health-related quality of life (HRQoL). We evaluated the feasibility and accuracy of daily micro-surveys using a smartphone platform among patients recovering from cancer surgery. METHODS: In a prospective study (2017-2019), patients undergoing cancer surgery downloaded a smartphone application that administered daily micro-surveys comprising five randomly selected items from the Short Form-36 (SF-36). Micro-surveys were administered without replacement until the entire SF-36 was administered weekly. The full-length SF-36 was also administered preoperatively and 4, 12, and 24 weeks postoperatively. We assessed response and completion rates between the micro-surveys and full-length SF-36, as well as agreement of responses using Bland-Altman (B&A) analyses. RESULTS: Ninety-five patients downloaded the application and were followed for a mean of 131 days [SD ± 85]. Response rates for the full-length SF-36 and micro-surveys was 76% [95%CI 69, 83], and 34% [95%CI 26, 39]. Despite lower response rates, more SF-36 surveys were collected using the daily micro-surveys compared to the intermittent full-length SF-36 (9.9 [95%CI 8.4, 12.6] vs. 3.0 [95%CI 2.8, 3.3], respectively). B&A analyses demonstrated lack of agreement between micro-surveys and SF-36. However, agreement improved with higher micro-survey completion rate. Eighty-five percent of participants reported that daily micro-surveys were not burdensome. CONCLUSION: This study suggests that collection of daily micro-surveys among patients recovering from cancer surgery is feasible using smartphones in the early postoperative period. Future implementation of daily micro-surveys may more granularly describe momentary HRQoL changes through a greater volume of self-reported survey data.

Parental Posttraumatic Stress and School Performance in Refugee Children.

Refugee children in the Nordic countries have been reported to perform poorly in school and carry a high burden of familial posttraumatic stress. The present study aimed to investigate the impact of maternal and paternal posttraumatic stress on the school performance of refugee children. We used national register data on school grades at age 15-16 along with demographic and migration indicators during 2011-2017 in a population of 18,831 children in refugee families in Stockholm County, Sweden. Parental posttraumatic stress was identified in regional data from three levels of care, including a tertiary treatment center for victims of torture and war. Multivariable linear and logistic regression models were fitted to analyze (a) mean grade point averages as Z scores and (b) eligibility for upper secondary school. In fully adjusted models, children exposed to paternal posttraumatic stress had a lower mean grade point average, SD = -0.14, 95% CI [-0.22, -0.07], and higher odds of not being eligible for upper secondary education, OR = 1.37, 95% CI [1.14, 1.65]. Maternal posttraumatic stress had a similar crude effect on school performance, SD = -0.15, 95% CI [-0.22, -0.07], OR = 1.25, 95% CI [1.00, 1.55], which was attenuated after adjusting for single-parent households and the use of child psychiatric services. The effects were similar for boys and girls as well as for different levels of care. Parental posttraumatic stress had a small negative effect on school performance in refugee children, adding to the intergenerational consequences of psychological trauma.

Parental post-traumatic stress and psychiatric care utilisation among refugee adolescents.

Parental psychiatric morbidity related to experiences of war and trauma has been associated with adverse psychological outcomes for children. The aim of this study was to investigate parental post-traumatic stress in relation to psychiatric care utilization among children of refugees with particular attention on the child's own refugee status, sex of both child and parents, and specific psychiatric diagnoses. This was a register study in a population of 16 143 adolescents from refugee families in Stockholm County born 1995-2000 and followed between 2011 and 2017 (11-18 years old). Parental post-traumatic stress, identified in three levels of care, was analysed in relation to child and adolescent psychiatric care use. Cox regression analysis was used to estimate hazard ratios (HR) and 95% confidence intervals (CI), adjusted for duration of residence and demographic and socioeconomic variables. Having a mother with post-traumatic stress was associated with higher psychiatric care utilization, with adjusted HR 2.44 (95% CI 1.90-3.14) among foreign-born refugee children and HR 1.77 (1.33-2.36) among Swedish-born children with refugee parents, with particularly high risks for children with less than five years of residence (HR 4.03; 2.29-7.10) and for diagnoses of anxiety and depression (HR 2.71; 2.11-3.48). Having a father with post-traumatic stress was not associated with increased HRs of psychiatric care utilization. Similar results were seen for boys and girls. Treatment for post-traumatic stress should be made available in refugee reception programmes. These programmes should use a family approach that targets both parents and children.

Parental death in childhood and pathways to increased mortality across the life course in Stockholm, Sweden: A cohort study.

BACKGROUND: Previous studies have shown that the experience of parental death during childhood is associated with increased mortality risk. However, few studies have examined potential pathways that may explain these findings. The aim of this study is to examine whether familial and behavioural factors during adolescence and socioeconomic disadvantages in early adulthood mediate the association between loss of a parent at age 0 to 12 and all-cause mortality by the age of 63. METHODS AND FINDINGS: A cohort study was conducted using data from the Stockholm Birth Cohort Multigenerational Study for 12,615 children born in 1953, with information covering 1953 to 2016. Familial and behavioural factors at age 13 to 19 included psychiatric and alcohol problems in the surviving parent, receipt of social assistance, and delinquent behaviour in the offspring. Socioeconomic disadvantage in early adulthood included educational attainment, occupational social class, and income at age 27 to 37. We used Cox proportional hazard regression models, combined with a multimediator analysis, to separate direct and indirect effects of parental death on all-cause mortality. Among the 12,582 offspring in the study (men 51%; women 49%), about 3% experienced the death of a parent in childhood. During follow-up from the age of 38 to 63, there were 935 deaths among offspring. Parental death was associated with an elevated risk of mortality after adjusting for demographic and household socioeconomic characteristics at birth (hazard ratio [HR]: 1.52 [95% confidence interval: 1.10 to 2.08, p-value = 0.010]). Delinquent behaviour in adolescence and income during early adulthood were the most influential mediators, and the indirect associations through these variables were HR 1.03 (1.00 to 1.06, 0.029) and HR 1.04 (1.01 to 1.07, 0.029), respectively. After accounting for these indirect paths, the direct path was attenuated to HR 1.35 (0.98 to 1.85, 0.066). The limitations of the study include that the associations may be partly due to genetic, social, and behavioural residual confounding, that statistical power was low in some of the subgroup analyses, and that there might be other relevant paths that were not investigated in the present study. CONCLUSIONS: Our findings from this cohort study suggest that childhood parental death is associated with increased mortality and that the association was mediated through a chain of disadvantages over the life course including delinquency in adolescence and lower income during early adulthood. Professionals working with bereaved children should take the higher mortality risk in bereaved offspring into account and consider its lifelong consequences. When planning and providing support to bereaved children, it may be particularly important to be aware of their increased susceptibility to delinquency and socioeconomic vulnerability that eventually lead to higher mortality.

Initiation of antidepressant use among refugee and Swedish-born youth after diagnosis of a common mental disorder: findings from the REMAIN study.

PURPOSE: The objective of this study was to compare the initiation and type of antidepressant use between refugees and matched Swedish-born youth after a diagnosis of a common mental disorder (CMD) and assess sociodemographic and clinical factors associated with the initiation. METHODS: The study cohort included youth aged 16-25 years, with an incident diagnosis of CMD based on specialized health care registers in Sweden 2006-2016, without prior antidepressant use during 1 year. One Swedish-born person was matched for each identified refugee youth (N = 3936 in both groups). Initiation of antidepressant use and factors associated with the initiation, were investigated with logistic regression yielding Odds ratios, OR, and 95% Confidence Intervals, CI. RESULTS: Refugees were less likely to initiate antidepressant use compared with Swedish-born (40.5% vs. 59.6%, adjusted OR 0.43, 95% CI 0.39-0.48). Selective serotonin reuptake inhibitors (SSRIs) were less frequently initiated for refugees than Swedish-born (71.2% vs. 81.3% of initiations, p < 0.0001). Sertraline was the most commonly initiated antidepressant both for refugees (34.3%) and Swedish-born individuals (40.3%). Among refugees, factors associated with increased odds of antidepressant initiation were previous use of anxiolytics or hypnotics, previous sickness absence of < 90 days, cancer and older age (OR range 1.07-2.72), and less than 5 years duration of residency in Sweden was associated with decreased odds (OR 0.76, 95% CI 0.63-0.92). CONCLUSION: Young refugees with a CMD seem to initiate antidepressants in general and those most effective considerably less often than their Swedish-born counterparts.

Underutilisation of psychiatric care among refugee adolescents in Stockholm.

AIM: Refugee children have been shown to underutilise psychiatric services in Scandinavia. The aim of this study was to investigate determinants of psychiatric care utilisation in adolescents in refugee families. METHODS: The study used regional data on healthcare use linked to sociodemographic data from national registers in a total population of 93 537 adolescents in the Stockholm County born in 1995-2000, including 18 831 with a refugee background. Cox regression analyses were fitted to estimate Hazard ratios (HRs) of psychiatric care utilisation in the age-span 11-18 years. RESULTS: Psychiatric care use was lower in the large majority of adolescents in refugee families that originated in low- and middle-income countries, with adjusted HRs 0.34 (95% CI 0.28-0.42) and 0.51 (95% CI 0.46-0.56), respectively, compared with the Swedish majority population. Among the foreign-born refugee adolescents, psychiatric care use increased with duration of residence in Sweden and was higher in children who obtained residency as asylum seekers compared with those who settled in family reunification. CONCLUSION: Adolescents in newly settled refugee families with a background in low- and middle-income countries should be a priority in mental health assessment of refugee children and referral to psychiatric care facilitated for children in need.

Deriving an overall appearance domain score by applying bifactor IRT analysis to the BODY-Q appearance scales.

PURPOSE: With the BODY-Q, one can assess outcomes, such as satisfaction with appearance, in weight loss and body contouring patients using multiple scales. All scales can be used independently in any given combination or order. Currently, the BODY-Q cannot provide overall appearance scores across scales that measure a similar super-ordinate construct (i.e., overall appearance), which could improve the scales' usefulness as a benchmarking tool and improve the comprehensibility of patient feedback. We explored the possibility of establishing overall appearance scores, by applying a bifactor model to the BODY-Q appearance scales. METHODS: In a bifactor model, questionnaire items load onto both a primary specific factors and a general factor, such as satisfaction with appearance. The international BODY-Q validation patient sample (n = 734) was used to fit a bifactor model to the appearance domain. Factor loadings, fit indices, and correlation between bifactor appearance domain and satisfaction with body scale were assessed. RESULTS: All items loaded on the general factor of their corresponding domain. In the appearance domain, all items demonstrated adequate item fit to the model. All scales had satisfactory fit to the bifactor model (RMSEA 0.045, CFI 0.969, and TLI 0.964). The correlation between the appearance domain summary scores and satisfaction with body scale scores was found to be 0.77. DISCUSSION: We successfully applied a bifactor model to BODY-Q data with good item and model fit indices. With this method, we were able to produce reliable overall appearance scores which may improve the interpretability of the BODY-Q while increasing flexibility.

The genetic and environmental etiology of child maltreatment in a parent-based extended family design.

Child maltreatment has been associated with various cumulative risk factors. However, little is known about the extent to which genetic and environmental factors contribute to individual differences between parents in perpetrating child maltreatment. To estimate the relative contribution of genetic and environmental factors to perpetrating maltreatment we used a parent-based extended family design. Child-reported perpetrated maltreatment was available for 556 parents (283 women) from 63 families. To explore reporter effects (i.e., child perspective on maltreatment), child reports were compared to multi-informant reports. Based on polygenic model analyses, most of the variance related to the perpetration of physical abuse and emotional neglect was explained by common environmental factors (physical abuse: c2 = 59%, SE = 12%, p = .006; emotional neglect: c2 = 47%, SE = 8%, p < .001) whereas genetic factors did not significantly contribute to the model. For perpetrated emotional abuse, in contrast, genetic factors did significantly contribute to perpetrated emotional abuse (h2 = 33%, SE = 8%, p < .001), whereas common environment factors did not. Multi-informant reports led to similar estimates of genetic and common environmental effects on all measures except for emotional abuse, where a multi-informant approach yielded higher estimates of the common environmental effects. Overall, estimates of unique environment, including measurement error, were lower using multi-informant reports. In conclusion, our findings suggest that genetic pathways play a significant role in perpetrating emotional abuse, while physical abuse and emotional neglect are transmitted primarily through common environmental factors. These findings imply that interventions may need to target different mechanisms dependings on maltreatment type.

Cumulative childhood adversity, adolescent psychiatric disorder and violent offending in young adulthood.

BACKGROUND: Childhood adversity (CA) is a risk indicator for psychiatric morbidity. Although CA has been linked to violent offending, limited research has considered adolescent psychiatric disorder as a mediating factor. The current study examined whether adolescent psychiatric disorder mediates the association between CA and violent offending. METHODS: We used a cohort of 476 103 individuals born in 1984-1988 in Sweden. Register-based CAs included parental death, substance abuse and psychiatric disorder, parental criminal offending, parental separation, public assistance, child welfare intervention and residential instability. Adolescent psychiatric disorder was defined as being treated with a psychiatric diagnosis prior to age 20. Estimates of risk of violent offending after age 20 were calculated as incidence rate ratios (IRRs) with 95% confidence intervals (CIs). Mediation was tested with the bootstrap method. RESULTS: Exposure to CA was positively associated with violent offending, especially when accumulated. Individuals exposed to 4+ CAs who were also treated for psychiatric disorder had a 12-fold elevated risk for violent offending (adjusted IRR 12.2, 95% CI 10.6-14.0). Corresponding IRR among 4+ CA youth with no psychiatric disorder was 5.1 (95% CI 4.5-5.6). Psychiatric disorder mediated the association between CA and violent offending. CONCLUSION: CA is associated with elevated risk for violent offending in early adulthood, and the association is partly mediated by adolescent psychiatric disorder. Individuals exposed to cumulative CA who also develop adolescent psychopathology should be regarded as a high-risk group for violent offending, by professionals in social and health services that come into contact with this group.

Parents' experiences of childhood abuse and neglect are differentially associated with behavioral and autonomic responses to their offspring.

Although childhood maltreatment has been shown to compromise adaptive parental behavior, little is known what happens in terms of physiological regulation when parents with a history of childhood maltreatment interact with their offspring. Using a sample of 229 parents (131 women), the present study examined whether childhood maltreatment experiences are associated with parents' behavioral and autonomic responses while resolving conflict with their offspring. Self-reported experienced child maltreatment was measured using a questionnaire assessing abuse and neglect. Parents (Mage  = 52.7 years, rangeage  = 26.6-88.4 years) and their offspring (Mage  = 24.6 years, rangeage  = 7.5-65.6 years) participated in a videotaped parent-offspring conflict interaction task. Parental warmth, negativity, and emotional support were coded. In addition, their pre-ejection period and respiratory sinus arrhythmia were measured as indicators of underlying sympathetic and parasympathetic nervous system reactivity, respectively. Findings demonstrated that experiences of abuse and neglect were associated with behavioral and physiological responses in different ways. Separating these two types of maltreatment in research and in clinical practice might be important.

Experience of sibling death in childhood and risk of psychiatric care in adulthood: a national cohort study from Sweden.

Studies have found that sibling loss is associated with an increased risk of death from external causes (i.e. suicides, accidents and homicides). Increased psychiatric health problems following bereavement could underlie such an association. We studied the influence of sibling loss during childhood on psychiatric care in young adulthood, adjusting for psychosocial covariates shared by siblings in childhood. A national cohort born in Sweden in 1973-1982 (N = 701,270) was followed prospectively until 2013. Cox proportional hazards models were used to analyse the association between sibling loss during childhood and psychiatric inpatient and outpatient care identified by the Hospital Discharge Register. After adjustment for confounders, the HRs of psychiatric care in men who experienced sibling loss were 1.17 (95% CI 1.07-1.27) while the associations turned non-significant in women after adjustment for family-related psychosocial covariates, HR 1.07 (95% CI 0.99-1.16). An increased risk was found in men bereaved in early childhood (1.22 95% CI 1.07-1.38) and adolescence (1.27 95% CI 1.08-1.48). Among women, loss of a sibling during adolescence was significantly associated with psychiatric care (1.19 95% CI 1.03-1.36). Increased psychiatric health problems following bereavement could underlie the previously found association between sibling loss and mortality from external causes. Family-related psychosocial conditions shared by siblings in childhood may account for the association between sibling death and psychiatric care in adulthood.

Parental PTSD and school performance in 16-year-olds - a Swedish national cohort study.

Aim: Posttraumatic stress disorder (PTSD) in parents can have severe consequences also for their children. Prevalence of PTSD is high among refugees. Refugee children have been reported to perform poorly in school. The aim of this study was to investigate the impact of PTSD in refugee and native Swedish parents on children's school performance and to compare the impact of PTSD with that of other major psychiatric disorders. Methods: Register study where multiple regression models were used to analyse school performance in 15-16-year-olds in a national cohort (n = 703,813). PTSD and other major psychiatric disorders (bipolar, depression and/or psychotic disorders) were identified from out- and in-patient hospital care. Results: Maternal and paternal PTSD were associated with lower grades, with adjusted effects of 0.30-0.37 SD in refugee and 0.46-0.50 SD in native Swedish families. Impact of PTSD was greater than that of other psychiatric disorders and comorbidity to PTSD did not increase this impact. Although the impact of PTSD on grades was greater in children in native Swedish families, consequences with regard to eligibility to secondary education were greater for children in refugee families, where 35% of these children were ineligible. Conclusions: Parental PTSD has major consequences for children's school performance and contributes to the lower school performance in children in refugee families in Sweden. Identification and treatment of PTSD in refugee parents is important for offspring educational achievement. Psychiatric clinics and treatment centres need to have a strategy for support, including educational support, to the offspring of their patients with PTSD.

Experience of Sibling Death in Childhood and Risk of Death in Adulthood: A National Cohort Study From Sweden.

Although there is some evidence of an association between loss of a sibling in adulthood and subsequent mortality, there have been no previous studies in which investigators have examined whether the death of a sibling in childhood is associated with adult mortality using total population data. Data on a national cohort born in Sweden in 1973-1982 (n = 717,723) were prospectively collected from the Cause of Death Register until 2013 (i.e., from the ages of 18 years to 31-40 years). Cox proportional hazards models were used to analyze the association between sibling loss during childhood and death in young adulthood. After adjustment for sociodemographic confounders and parental psychosocial covariates, the hazard ratio for all-cause mortality in bereaved siblings versus nonbereaved siblings was 1.39 (95% confidence interval: 1.14, 1.69). Risks were more pronounced for those who lost a noninfant sibling (i.e., >1 year of age) (hazard ratio = 1.53, 95% confidence interval: 1.18, 1.95) and those who lost a sibling in adolescence (i.e., between the ages of 12 and 18 years) (hazard ratio = 1.71, 95% confidence interval: 1.24, 2.35). Excess mortality risk was found for concordant causes of death (i.e., siblings dying from the same causes) but not for discordant causes.

Hospital admissions due to alcohol related disorders among young adult refugees who arrived in Sweden as teenagers - a national cohort study.

BACKGROUND: Psychological distress and lack of family support may explain the mental health problems that are consistently found in young unaccompanied refugees in Western countries. Given the strong relationship between poor mental health and alcohol misuse, this study investigated hospital admissions due to alcohol related disorders among accompanied and unaccompanied young refugees who settled in Sweden as teenagers. METHODS: The dataset used in this study was derived from a combination of different registers. Cox regression models were used to estimate the risks of hospital care due to alcohol related disorders in 15,834 accompanied and 4376 unaccompanied young refugees (2005-2012), aged 13 to 19 years old when settling in Sweden and 19 to 32 years old in December 2004. These young refugees were divided into regions with largely similar attitudes toward alcohol: the former Yugoslavian republics, Somalia, and the Middle East. The findings were compared with one million peers in the native Swedish population. RESULTS: Compared to native Swedes, hospital admissions due to alcohol related disorders were less common in young refugees, with a hazard ratio (HR) of 0.65 and 95% confidence interval (CI) between 0.56 and 0.77. These risks were particularly lower among young female refugees. However, there were some differences across the refugee population. For example, the risks were higher in unaccompanied (male) refugees than accompanied ones (HR = 1.49, 95% CI = 1.00-2.19), also when adjusted for age, domicile and income. While the risks were lower in young refugees from Former Yugoslavia and the Middle East relative to native Swedes, independent of their length of residence in Sweden, refugees from Somalia who had lived in Sweden for more than ten years showed increased risks (HR = 2.54, 95% CI = 1.71-3.76), after adjustments of age and domicile. These risks decreased considerably when income was adjusted for. CONCLUSION: Young refugees have lower risks of alcohol disorders compared with native Swedes. The risks were higher in unaccompanied young (male) refugees compared to the accompanied ones. Moreover, Somalian refugees who had lived in Sweden for more than ten years seems to be particularly vulnerable to alcohol related disorders.

Parental death during childhood and depression in young adults - a national cohort study.

BACKGROUND: There are few prospective, population-based studies on childhood parental death and psychiatric disorders in adulthood, and previous findings are inconclusive. This study investigated the association between parental death from natural and external (suicides, accidents or homicides) causes before 18 years and the risk of clinical depression in young adults, in relation to age at loss and gender of both child and parent. METHODS: In this register-based study, a national cohort born in Sweden during 1973-1982 (n = 862,554) was followed with regard to hospital admissions and outpatient care for depression during 2006-2013. Multivariate Cox proportional hazards models were used to estimate the impact of parental death, taking sociodemographic and parental psychosocial covariates into account. RESULTS: Maternal death from natural causes was associated with a hazard ratio (HR) of outpatient care for depression of 1.19 [95% confidence interval (CI), 1.02-1.40] in men and 1.15 (1.01-1.31) in women, after adjustment for sociodemographic confounders, with similar effect sizes for paternal natural death. Death from external causes consistently had higher effect size compared with natural deaths, in particular in relation to risk of hospital admissions for depression where they were as high as HR 3.23 (2.38-4.38) for men, and 1.79 (1.30-2.47) for women after a loss of a mother. Losing a parent in preschool age, compared with losing a parent as a teenager, was associated with higher risks of both hospitalization (p = .006) and outpatient care (p = .001) for depression. CONCLUSIONS: This study indicates that parental loss to death from natural causes during childhood is associated with a small increased risk of long-term consequences for psychological health. Children who lose their parents to death from external causes, that is suicides, accidents or homicides, and children losing a parent in young ages are, however, at particular risk and should be given priority in preventive interventions after parental loss.

Parental death in childhood and self-inflicted injuries in young adults-a national cohort study from Sweden.

Previous studies have shown that parental death influences health and mortality in bereaved offspring. To date, few studies have examined whether exposure to parental bereavement in childhood is associated with suicidality later in life. The aim of the present research was to investigate whether parental death during childhood influences self-inflicted injuries/poisoning in young adulthood. A national cohort born during 1973-1982 (N = 871,402) was followed prospectively in the National Patient Discharge Register from age 18 to 31-40 years. Cox regression analyses of proportional hazards, with adjustment for socio-demographic confounders and parental psychosocial covariates, were used to test hypotheses regarding parental loss and hospital admission due to self-inflicted injuries/poisoning. Parental deaths were divided into deaths caused by (1) external causes/substance abuse and (2) natural causes. Persons who had lost a parent to an external cause/substance abuse-related death had the highest risk of being admitted to a hospital for a self-inflicted injury/poisoning; HRs 2.03 (1.67-2.46) for maternal death and 2.03 (1.84-2.25) for paternal death, after adjustment for socio-demographic confounders and risk factors among surviving parents. Risks were also increased for parental death due to natural causes, but at a lower level: 1.19 (1.01-1.39) and 1.28 (1.15-1.43), respectively. Losing a father before school age was associated with a higher risk of hospital admission for a self-inflicted injury/poisoning than was loss at an older age for both genders. Maternal loss before school age was associated with a higher risk only for men, particularly maternal death by natural causes (p < 0.01).