Psychiatric morbidity and subsequent divorce: a couple-level register-based study in Finland

A systematic review of the social impact of diseases in Nordic countries

BACKGROUND

We review the literature on the social impacts of diseases, defined as the social consequences of having a disease on the people around the patient, such as spouses, caregivers and offspring. The two objectives of this study are to summarise the social outcomes commonly associated with diseases and to compare the social impact across a range of diseases.

METHODS

A systematic review of the social impact of disease in Nordic countries was conducted using PubMed, PsycINFO and Google Scholar (PROSPERO registration number CRD42022291796). All articles that met the inclusion criteria were reviewed. We tabulated all outcomes and diseases studied, and synthesised the evidence based on the perspectives of patients, spouse/caregiver and offspring.

RESULTS

A total of 135 studies met the eligibility criteria, covering 76 diseases and 39 outcomes. From the patient's perspective, diseases impact divorce and marriage rates, social functioning, likelihood of committing a crime and being a victim of crime. From the caregiver's perspective, diseases affect their health-related quality of life and physical and psychological health. From the offspring's perspective, diseases impact their development, health and social adversities in later life. Diseases generally had negative social impacts, but there were some diseases associated with positive impacts.

CONCLUSIONS

The review provides a useful summary and gross comparison of the social impact of different diseases. The social impact of diseases can be large and significant. Thus, it should be considered when policymakers are setting priorities across disease areas.

Own depression, partner's depression, and childlessness: A nationwide register-based study

Depression and other mental health disorders are increasing while childlessness is increasing. However, this relationship has rarely been studied. We examine how depression, as measured by antidepressant use, is related to childlessness. We add to the previous research by examining both the role of current partnership status and having a partner with depression as a mechanism. We use Finnish total population register data for cohorts born in 1977-1980. We estimate discrete time event history models for the likelihood of having a child with average marginal effects separately for men and women. Depression was measured annually with a time-varying indicator of having at least one purchase of antidepressants in the preceding year. We find a positive association between depression and childlessness; the annual probability of having a child was 2.7 percentage points lower for women with depression and 1.6 percentage points for men with depression in age-controlled models. When controlling for all background variables such as education, the likelihood of having a child was 1.9 percentage points lower for women with depression and 0.3 percentage points lower for men with depression. In total, 41% of men and 26% of women who had used antidepressant medication between ages 18-38 remained childless at age 39, compared to 30% of men and 22% of women who had not used antidepressant medication. We also find that a partner's depression increases the probability of being childless, and the likelihood of being childless is even higher if both an individual and their partner had depression.

Family Genetic-Risk Profiles Associated With Divorce

We used Swedish national register data (N = 2,828,777) to examine divorce and its associated patterns of family genetic risk scores (FGRS; personalized measures of genetic risk inferred from diagnoses in relatives) across ten psychiatric disorders: major depression, anxiety disorders, obsessive-compulsive disorder, bipolar disorder, schizophrenia, anorexia nervosa, alcohol use disorder, drug use disorder, ADHD, and autism-spectrum disorder. Individuals who divorced had elevated FGRS across all disorders compared to those who were stably married or never married. FGRS for all disorders were higher among divorced females compared to divorced males; among those who did not go on to have a stable second marriage compared to those who had a stable second marriage; and increased as the cumulative number of divorces increased. In summary, genetic predispositions for psychiatric disorders are associated with the propensity to divorce, and with several differences as a function of sex, remarriage, and the cumulative number of divorce transitions.

Duration and timing of depression and risk of family dissolution: A register-based cohort study of newly-formed Danish families

BACKGROUND

Depression is detrimental to partnership stability. However, it remains unclear if and how the duration and timing of depression affect the risk of family dissolution.

METHODS

We conducted a Danish register-based cohort study of newly-formed cohabiting and married couples in 2008 and 2009, who were followed from the second year after family formation. Depressive episodes were defined by individual-level prescription patterns of antidepressant drugs (ATC codes N06A) in either partner. Family dissolution was characterized by the discontinuation of a shared residential address. Using Longitudinal Targeted Minimum Loss-based Estimation, we estimated the risk of family dissolution after 5 years of follow-up under various lengths and timings of depressive episodes.

RESULTS

There were 102,335 families included. The covariate-adjusted risk of family dissolution in families without depressive episodes was 30.0 % (95 % CI 29.6-30.4 %) and 35.5 % (95 % CI 29.5-41.5 %) in families with at least one depressive episode during follow-up. The risk of family dissolution increased with the duration of depressive episodes to 42.2 % (95 % CI 40.8-43.6 %) for five coherent years of depression. Depression shortly after family formation carried higher risk of family dissolution; this risk was 42.3 % (95 % CI 38.4-46.3 %) for depression experienced in the first year of family formation versus 32.9 % (95 % CI 31.8-34.0 %) in the fifth year of family formation.

LIMITATIONS

Proxy measures of depression by antidepressant prescriptions fails to identify milder depression. Annual measures of family dissolution precluded more fine-grained analyses of time-intervals.

CONCLUSIONS

Depression is disruptive to family stability, particularly with longer duration and early onset after family formation.

Neurological conditions and subsequent divorce risk in the Nordic countries: the importance of gender and both spouses' education

BACKGROUND

Prior studies suggest that poor physical health, accompanied by functional disability, is associated with increased divorce risk. However, this association may depend on gender, the socioeconomic resources of the couple, as well as the social policy and social (in)equality context in which the illness is experienced. This study focuses on neurological conditions, which often have substantial functional consequences.

METHODS

We used longitudinal population-wide register data from the years 2007-2016 (Denmark, Sweden) or 2008-2017 (Finland, Norway) to follow 2 809 209 married couples aged 30-64 for neurological conditions, identified using information on specialised healthcare for diseases of the nervous system and subsequent divorce. Cox regression models were estimated in each country, and meta-analysis used to calculate across-country estimates.

RESULTS

During the 10-year follow-up period, 22.2% of couples experienced neurological conditions and 12.0% of marriages ended in divorce. In all countries, divorce risk was elevated among couples where at least one spouse had a neurological condition, and especially so if both spouses were ill. The divorce risk was either larger or similar for husband's illness, compared with wife's illness, in all educational categories. For the countries pooled, the weighted average HR was 1.21 (95% CI 1.20 to 1.23) for wives' illness, 1.27 (95% CI 1.25 to 1.29) for husbands' illness and 1.38 (95% CI 1.34 to 1.42) for couples where both spouses were ill.

CONCLUSIONS

Despite some variation by educational resources and country context, the results suggest that the social consequences of illness are noticeable even in Nordic welfare states, with the husband's illness being at least as important as the wife's.

Maternal psychiatric and somatic illness, and the risk of unintentional injuries in children: variation by type of maternal illness, type of injury and child age

BACKGROUND

Maternal mental illness appears to increase the risk of unintentional childhood injuries, which are a common cause of morbidity and mortality in early childhood. However, little is known about the variations in this association by type of injury and child's age, and studies on the effects of maternal somatic illness on children's injury risk are scarce.

METHODS

We used Finnish total population register data from 2000 to 2017 to link 1 369 325 children to their biological mothers and followed them for maternal illness and childhood injuries until the children's sixth birthday. Cox regression models were used to examine the associations between maternal illness and children's injuries by type of illness (neurological, psychiatric and cancer), type of injury (transport injuries, falls, burns, drowning or suffocations, poisonings, exposure to inanimate and animate mechanical forces) and child's age (<1 year-olds, 1-2 year-olds, 3-5 year-olds).

RESULTS

After adjustment for family structure, maternal age at birth, maternal education, income, child's gender, native language and region of residence, children of unwell mothers showed a higher risk of injuries (HR: 1.21, 95% CI: 1.19 to 1.23). This association was clear for maternal neurological (HR: 1.31, 95% CI: 1.26 to 1.36) and psychiatric illnesses (HR: 1.20, 95% CI: 1.18 to 1.23) but inconsistent for cancer. Maternal illness predicted an increased risk of injury across all age groups.

CONCLUSIONS

Maternal mental and somatic illness may both increase children's injury risk. Adequate social and parenting support for families with maternal illness may reduce childhood injury.

Major depressive disorder

Major depressive disorder (MDD) is characterized by persistent depressed mood, loss of interest or pleasure in previously enjoyable activities, recurrent thoughts of death, and physical and cognitive symptoms. People with MDD can have reduced quality of life owing to the disorder itself as well as related medical comorbidities, social factors, and impaired functional outcomes. MDD is a complex disorder that cannot be fully explained by any one single established biological or environmental pathway. Instead, MDD seems to be caused by a combination of genetic, environmental, psychological and biological factors. Treatment for MDD commonly involves pharmacological therapy with antidepressant medications, psychotherapy or a combination of both. In people with severe and/or treatment-resistant MDD, other biological therapies, such as electroconvulsive therapy, may also be offered.

Partner violence surrounding divorce: A record-linkage study of wives and their husbands

Objective

This study analyzes the victimization trajectories of partner violence against women surrounding divorce, depending on whether the couple has children together.

Background

Prior studies have found that partner violence is associated with an increased risk of divorce. No study has assessed the victimization trajectories surrounding divorce for women with and without children, although women with children may remain at higher risk of violence following divorce.

Method

Using Finnish record-linkage data of 22,468 divorced and 333,542 continuously married women and their husbands, we used repeated-measures logistic regression analyses to assess changes in victimization for partner violence before and after divorce. The outcomes considered were police-reported crimes committed by husbands against their wives and hospital-treated assault injuries recorded for wives.

Results

The risk of crime victimization for partner assault was already elevated from 2 to 3 years before divorce, peaked in the year prior to divorce, and then mainly leveled off 1-2 years after divorce. Hospital data show that the time of the greatest risk was from 6 to 12 months before divorce, when divorce is usually filed for. Women with younger children experienced elevated risks of physical violence shortly before divorce and remained at higher risk of menace than women without children for a year after divorce.

Conclusion

Divorcing women committed assaults against their husbands, but these were mostly accompanied by victimization, suggesting that resistant violence was common for women as perpetrators. Women with a history of victimization need support, especially at the starts of their divorce processes.

Physical health conditions and subsequent union separation: a couple-level register study on neurological conditions, heart and lung disease, and cancer

BACKGROUND

Studies that assess the role of physical health conditions on separation risk are scarce and mostly lack health information on both partners. It is unclear how the association between physical illness and separation risk varies by type of illness, gender of the ill spouse and age of the couple.

METHODS

We used Finnish register data on 127 313 couples to examine how neurological conditions, heart and lung disease, and cancer are associated with separation risk. The data included information on medication, hospitalisations, separations and sociodemographic characteristics. Marital and non-marital cohabiting couples aged 40-70 years were followed from 1998 to 2003 for the onset of health conditions and subsequent separation, and Cox regression was used to examine the associations.

RESULTS

Compared with healthy couples, the HR of separation was elevated by 43% for couples in which both spouses had a physical health condition, by 22% for couples in which only the male spouse had fallen ill, and by 11% for couples in which only the female had fallen ill. Among older couples, the associations between physical illness and separation risk were even clearer. The association with separation risk was strongest for neurological conditions, and after incidence of these conditions among males, separation risk increased over time. Adjustment for sociodemographic characteristics had little effect.

CONCLUSIONS

Our findings suggest that poor health may largely strain relationships through disability and associated burden of spousal care, and this should be taken into consideration when planning support services for couples with physical health conditions.

[Parental Separation - Is the Accumulation with Other Adverse Childhood Experiences the Main Burden? Analysis of a Representative Sample of the German Population]

INTRODUCTION

Adverse childhood experiences (ACEs) tend to co-occur. The more forms of childhood adverse are experienced, the higher are the psychological and physical impairments in adulthood. The present study therefore examines the extent to which the experience of parental separation is related to the risk of other forms of ACEs and the extent to which the accumulation of ACEs is related to impairment in adulthood.

METHODS

A cross-sectional analysis of a representative sample of the German population from the age of 18 onwards was performed (N=2466; mean age=49.5 years (18-93); f: 1368 (55.5%); m: 1098 (44.5%)). The demographic data were assessed by interview, the remaining data were collected by questionnaires. Current depressive and anxiety symptoms self-perceived somatic health and life quality were assessed, while ACEs were assessed retrospectively by the Adverse Childhood Experiences (ACE)-Questionnaire.

RESULTS

Child maltreatment and mental illness of household members, substance abuse of household members, incarceration of household members and violence against the mother were more frequent when participants reported separation of parents. Parental separation was not associated with an increased rate of psychological impairment and, in women, physical impairment when no other forms of ACEs were present.

CONCLUSION

Children and adolescents whose parents have separated more often experience other forms of ACEs than their peers. It seems to be this accumulation of ACEs that is associated with impairments in adulthood.