Indications for antidepressant drug prescribing in general practice in the Netherlands

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.

The cross-sectional association between dietary total, animal, and plant-based protein intake and the prevalence and severity of depressive symptoms in Dutch adults with type 2 diabetes: The Hoorn Diabetes Care System cohort

OBJECTIVE

This study aimed to investigate cross-sectional associations of total, animal, and plant-based protein intake and depressive symptoms in Dutch adults with type 2 diabetes (T2D).

METHODS

We included 1137 individuals with T2D (aged 68.6 ± 9.0) from the Hoorn Diabetes Care System cohort. Energy-adjusted protein intake was assessed using a validated Food Frequency Questionnaire. The nine-item Patient Health Questionnaire (PHQ-9) was used to assess the prevalence of depressive symptoms (PHQ-9 ≥ 10 and/or anti-depressant use) and the severity of depressive symptoms (continuous PHQ-9 score). Associations between total, animal, and plant-based protein (quartiles) with depressive symptoms were assessed using multiple logistic and linear regression.

RESULTS

Highest intake of total, animal, and plant-based protein was not associated with the prevalence of depressive symptoms, compared to lowest intake (e.g., total protein, ORQ4vsQ1:0.75, 95%CI 0.42;1.32). For the severity of depressive symptoms, highest total protein intake was significantly associated with lower PHQ-9 scores (ORQ4vsQ1:0.87, 95%CI 0.75;1.00), compared to lowest intake. Animal protein was not associated with the severity of depressive symptoms (β ∼ 1), while the association for plant-based protein was marginally non-significant (βQ4vsQ1:0.88, 95%CI 0.76;1.02).

CONCLUSION

In individuals with T2D, higher total protein intake was associated with reduced severity of depressive symptoms, but not with the prevalence of depressive symptoms. Further prospective research with a larger sample size is needed to confirm these associations.

Structural changes in a Danish social housing area: The impact of forced permanent rehousing on contact frequency with general practitioner and use of antidepressants

There is a lack of knowledge about the health consequences of politically initiated forced permanent rehousing (FPR) of residents in social housing areas. This study investigates if FPR is associated with the contact frequency with general practitioner (GP) and the proportion of residents who use antidepressants. The study included 432 rehoused residents matched 1:2 with remaining residents and residents from a comparable neighbouring area without exposure to rehousing. For GP contact frequency, we conducted a difference-in-difference analysis while the proportion of residents who used antidepressants was investigated through descriptive statistics. We found high GP contact frequency in the three groups, but no significant differences. Further, we found a low proportion of residents who used antidepressants in all groups, but a small increase from baseline to follow-up. Our results thus suggest that FPR neither affected the rehoused residents' GP contact frequency nor the proportion who used antidepressants.

Lessons from the Netherlands for Australia: cross-country comparison of trends in antidepressant dispensing 2013-2021 and contextual factors influencing prescribing

BACKGROUND

There is concern internationally about increasing antidepressant use. Most antidepressants are prescribed in general practice. The aim of this study was to compare trends in antidepressant dispensing in Australia and the Netherlands over the 9years from 2013 to 2021, and to explore reasons for differences.

METHODS

A convergent mixed methods study including analysis of publicly available antidepressant dispensing data obtained from Australia's Pharmaceutical Benefits Scheme and Repatriation Pharmaceutical Benefits Scheme and the Dutch Foundation for Pharmaceutical Statistics and a search of relevant literature to compare contextual factors influencing prescribing were undertaken.

RESULTS

In 2013, antidepressant dispensing rates in Australia were nearly twice as high as those in the Netherlands (82.5 versus 44.3DDD/1000/day) and increased to be more than twice as high by 2021 (115.6 versus 48.8DDD/1000/day). Antidepressant dispensing increased by 40% in Australia over the nine study years, but by only 10% in the Netherlands. Our scan of the literature confirms that while population factors, health system structure, and clinical guideline recommendations are largely consistent across the two countries, a multifaceted approach in the Netherlands involving improved access to non-pharmacological alternatives, initiatives targeting safer antidepressant prescribing, and tight regulation of pharmaceutical industry influence on prescribers, has successfully curtailed increasing antidepressant use.

CONCLUSIONS

Australia may learn from the Netherlands' approach to redress increasing antidepressant use.

Patterns, predictors, and patient-reported reasons for antidepressant discontinuation in the WHO World Mental Health Surveys

BACKGROUND

Despite their documented efficacy, substantial proportions of patients discontinue antidepressant medication (ADM) without a doctor's recommendation. The current report integrates data on patient-reported reasons into an investigation of patterns and predictors of ADM discontinuation.

METHODS

Face-to-face interviews with community samples from 13 countries (n = 30 697) in the World Mental Health (WMH) Surveys included n = 1890 respondents who used ADMs within the past 12 months.

RESULTS

10.9% of 12-month ADM users reported discontinuation-based on recommendation of the prescriber while 15.7% discontinued in the absence of prescriber recommendation. The main patient-reported reason for discontinuation was feeling better (46.6%), which was reported by a higher proportion of patients who discontinued within the first 2 weeks of treatment than later. Perceived ineffectiveness (18.5%), predisposing factors (e.g. fear of dependence) (20.0%), and enabling factors (e.g. inability to afford treatment cost) (5.0%) were much less commonly reported reasons. Discontinuation in the absence of prescriber recommendation was associated with low country income level, being employed, and having above average personal income. Age, prior history of psychotropic medication use, and being prescribed treatment from a psychiatrist rather than from a general medical practitioner, in comparison, were associated with a lower probability of this type of discontinuation. However, these predictors varied substantially depending on patient-reported reasons for discontinuation.

CONCLUSION

Dropping out early is not necessarily negative with almost half of individuals noting they felt better. The study underscores the diverse reasons given for dropping out and the need to evaluate how and whether dropping out influences short- or long-term functioning.

Association between occupational stress and mental health of nurses during the COVID-19 pandemic: A cross-sectional research

AIM

This study is aimed to explore the association between the occupational stress and mental health among Chinese nurses during the COVID-19 pandemic.

DESIGN

Cross-sectional study.

METHODS

There were 2913 nurse participants enrolled in the study. Demographic characteristics and other data were measured by a self-reported questionnaire. Occupational stress was measured by using the effort-reward imbalance (ERI) questionnaire. Mental health was measured by the Patient Health Questionnaire-9 and the General Anxiety Disorder-7.

RESULTS

Among the participants, 14.32% (417) experienced ERI; 8.1% (237) and 7.2% (210) reported depressive and anxiety symptoms, respectively. Compared with a reference group at the lowest quartile of the ERI, participants in the highest quartile had an adjusted odds ratio (OR) (95% CI) of 11.17 (4.42, 28.25) for incident depressive symptoms. For anxiety symptoms, the OR and 95% CI was 2.28 (1.21, 4.29). The ERI was shown to have a detrimental effect on mental health, especially depressive symptoms.

Levonorgestrel intrauterine device and depression: A Swedish register-based cohort study

BACKGROUND

The levonorgestrel intrauterine device (LNG-IUD) is traditionally viewed as a safe contraceptive with limited systemic effects. However, three recent studies have indicated an increased risk of depression subsequent to LNG-IUD use. This study aimed to examine the potential associated risk between LNG-IUDs and depression, and determine which women are at risk.

METHODS

This longitudinal cohort study was based on data from seven Swedish national population-based registers. All Nordic-born women aged 15-24 years residing in Sweden between 2010 and 2017 were included. Cox regression was implemented to estimate the adjusted hazard ratio (AHR) for developing depression, defined as first depression diagnosis or redeemed prescription for antidepressant treatment. We adjusted for age, education level, parental country of origin, parental psychiatric health, previous hormonal contraceptive use and medical indications for contraceptive use.

FINDINGS

703,157 women were included in the analysis. The LNG-IUD was associated with 57 % increased risk of depression [AHR 1.57 (95 % CI 1.51-1.64)]. The greatest risk increase was seen in adolescent women [AHR 2.57, (95 % CI 2.36-2.80)] and women who used the LNG-IUD as their first hormonal contraceptive method [AHR 1.63, (95 % CI 1.50-1.78)]. The risk of depression decreased at the end of study period [AHR 1.43, (95 % CI 1.36-1.51)], once the LNG-IUD became more widely accessible among nulliparous women.

CONCLUSIONS

Adolescent women who use the LNG-IUD as their first-ever hormonal contraceptive are at increased risk of developing depression. However, additional impact from confounding factors is likely as risk estimates decreased over the study period. Further research needs to determine if there is a causal relationship between LNG-IUDs and depression.

Antidepressant treatment initiation and public sick-leave compensation in the following year: a register-based prospective cohort study in Denmark

OBJECTIVES

Mental disorders have caused increasing sickness absence and related benefit claims in the OECD countries. This study investigates the association between antidepressant treatment initiation and public sick leave compensation (PLSC) in the following year in Denmark.

METHODS

The study was designed as a register-based prospective cohort study. We included 39,401 adults (aged 18-65 years) with at least 12 consecutive months of full-time labour market attachment who had initiated first-time antidepressant monotherapy for depression or anxiety between 1 January 2015 and 31 December 2018. PLSC was estimated for the year following the incident prescription of various antidepressants for depression or anxiety disorders.

RESULTS

The most frequently prescribed antidepressant medication was SSRIs (66.8%), with sertraline being the leading choice. Compared with sertraline, mirtazapine and mianserin were associated with the highest risks of PSLC in the year following initiation, with IRRs of 2.74 (95% CI: 2.63 to 2.86) and 5.79 (95% CI: 5.18 to 6.47), respectively. Compared with sertraline, citalopram (IRR 1.22, 95%CI 1.17-1.28), venlafaxine (IRR 1.34, 95%CI 1.23-1.45) and duloxetine (IRR 1.48, 95%CI 1.35-1.62) were all associated with increased PSLC. In contrast, paroxetine (IRR 0.85, 95% CI 0.74-0.98), fluoxetine (IRR 0.51, 95%CI 0.42-0.62) and vortioxetine (IRR 0.78, 95% CI 0.63-0.97) were all associated with a significantly lower risk of PSLC compared with sertraline.

CONCLUSIONS

Antidepressant treatment initiation was associated with PLSC. The highest risk of PLSC was seen for antidepressants with sedative side effects. Some types of antidepressants were associated with a lower risk of PLSC in the year following treatment initiation.

Does the suddenness matter? Antidepressant use before and after a spouse dies suddenly or expectedly of stroke

Aims: Changes in mental health at the time of widowhood may depend on the expectedness of spousal death, but scant evidence is available for spousal deaths attributable to stroke. Methods: Using register-linkage data for Finland, we assessed changes in antidepressant use before and after spousal death for those whose spouses died suddenly of stroke between 1998 and 2003 (N=1820) and for those whose spouses died expectedly of stroke, with prior hospitalisation for cerebrovascular disease (N=1636). We used both population-averaged logit models and individual fixed-effects linear probability models. The latter models control for unobserved time-invariant heterogeneity between the individuals. Results: Our study indicates that the suddenness of a spouse's death from stroke plays a role in the well-being of the surviving spouse. Increases in antidepressant use appeared larger following widowhood for those whose spouses died suddenly of stroke relative to those whose spouses had a medical history of cerebrovascular disease. Conclusions: The suddenness of a spouse's death from stroke plays a role for the surviving spouse. The results suggest multifaceted timings of distress surrounding spousal death, depending on the suddenness of a spouse's death from stroke.

Toward Precision Characterization and Treatment of Psychopathology: A Path Forward and Integrative Framework of the Hierarchical Taxonomy of Psychopathology and the Research Domain Criteria

A critical mission of psychological science is to conduct research that ultimately improves the lives of individuals who experience psychopathology. One important aspect of accomplishing this mission is increasing the likelihood that treatments will work for each person. I contend that treatment prognosis can be improved by moving toward a precision-medicine model. I advance a principle-driven framework for working toward these objectives. First, I synthesize the Hierarchical Taxonomy of Psychopathology and the Research Domain Criteria and demonstrate how integrating these models facilitates precision characterization of psychopathology. Second, I outline and demonstrate a systematic process for approaching treatment selection by leveraging precisely characterized representations of psychopathology. Finally, I advocate the research and clinical applications of this framework. Although clinical and psychological scientists are conducting exciting, multidisciplinary, and methodologically rigorous research in their respective domains, the impact of these pursuits will be maximized in the context of a unifying theoretical framework that supports a clear guiding mission.

Effect of vitamin D supplementation on depression in older Australian adults

OBJECTIVES

To investigate whether vitamin D supplementation reduces depressive symptoms and incidence of antidepressant use.

METHODS

We used data from the D-Health Trial (N = 21,315), a randomized double-blind placebo-controlled trial of monthly vitamin D₃ for the prevention of all-cause mortality. Participants were Australians aged 60-84 years. Participants completed the Patient Health Questionnaire (PHQ-9) at 1, 2 and 5 years after randomization to measure depressive symptoms; national prescribing records were used to capture antidepressant use. We used mixed models and survival models.

RESULTS

Analyses of PHQ-9 scores included 20,487 participants (mean age 69·3 years, 46% women); the mean difference (MD) in PHQ-9 score (vitamin D vs. placebo) was 0·02 (95% CI -0·06, 0·11). There was negligible difference in the prevalence of clinically relevant depression (PHQ-9 score ≥10) (odds ratio 0·99; 95% CI 0·90, 1·08). We included 16,670 participants in the analyses of incident antidepressant use (mean age 69·4 years, 43% women). Incidence of antidepressant use was similar between the groups (hazard ratio [HR] 1·04; 95% CI 0·96, 1·12). In subgroup analyses, vitamin D improved PHQ-9 scores in those taking antidepressants at baseline (MD -0·25; 95% CI -0·49, -0·01; p-interaction = 0·02). It decreased risk of antidepressant use in participants with predicted 25(OH)D concentration <50 nmol/L (HR 0·88; 95% CI 0·75, 1·02; p-interaction = 0·01) and increased risk in those with predicted 25(OH)D ≥ 50 nmol/L (HR 1·10; 95% CI 1·01, 1·20).

CONCLUSION

Monthly supplementation with high-dose vitamin D₃ was not of benefit for measures of depression overall, but there was some evidence of benefit in subgroup analyses.

CLINICAL TRIAL REGISTRATION

The trial is registered on the Australian New Zealand Clinical Trials Registry: ACTRN12613000743763. https://www.anzctr.org.au/.

Impact of the COVID-19 pandemic on psychotropic medication uptake: time-series analysis of a population-wide cohort

BACKGROUND

The COVID-19 pandemic and associated lockdowns were predicted to have a major impact on mental health, however current studies have produced contradictory findings with limited longitudinal data.

AIMS

Nine years of linked, individual-level administrative data were used to examine changes in psychotropic medication uptake before and during the pandemic.

METHOD

Medication data from a population-wide prescribing database were linked to demographic and socioeconomic indicators from healthcare registration records (n = 1 801 860). Monthly prescription uptake was split (pre-restrictions: January 2012 to February 2020 and during restrictions: March to October 2020). Auto regressive integrated moving average (ARIMA) models were trained in R taking into consideration trends and seasonal effects. Forecast ('expected') monthly values were compared with 'actual' values, stratified by demographic factors.

RESULTS

Over the study period 38.5% of the study population were in receipt of ≥1 psychotropic medication. Uptake of these medications have been following a strong upward trend since January 2012. In March 2020 uptake of all medications increased beyond expected values, returning to expected trends from May 2020 for antidepressants, anxiolytics and antipsychotics. In the 8 months during restrictions uptake of hypnotic medication was 12% higher than expected among those <18 years, and anxiolytic medication higher than expected in those >65 years.

CONCLUSIONS

Results suggest an initial 'stockpiling' of medications in March 2020 before trends mostly returned to expected levels. The anticipated tsunami of mental ill health is not yet manifest in psychotropic medication uptake. There are indications of increased anxiety and sleep difficulties in some subgroups, although these conditions may resolve as we emerge from the pandemic without need for psychiatric intervention.

In utero antidepressant exposure not associated with ADHD in the offspring: A case control sibling design

Recent studies have reported an association between antidepressant (AD) use during pregnancy and the risk to develop attention-deficit/hyperactivity disorder (ADHD) in the offspring. However, the association might be confounded by risk factors in the pregnant parent. To control for unmeasured factors between pregnancies carried by the same parent, we set up a case-control sibling study using the University of Groningen prescription database IADB.nl. Children receiving medication for ADHD (cases) before the age of 16 years were matched to siblings not receiving such medication (controls). Exposure was defined as at least two prescriptions for any AD during pregnancy, i.e., the period of 39 weeks before the birth date of the offspring. Secondary analyses were performed to assess the effects of the degree of exposure (the amount of Defined Daily Doses) and the type of AD exposed to. Univariate and multivariate logistic regression was used to estimate odds ratios (ORs) with corresponding 95% confidence intervals (CI). In total, 2,833 children (1,304 cases and 1,529 controls) were included in the analysis. Exposure rate to ADs among cases and controls was 2.2% and 2.4%, respectively. After adjusting for the birth date of the child (as a proxy for the date of pregnancy), age of the pregnant parent at birth, use of psychostimulants, opioids, and antiepileptic drugs by the pregnant parent in the 15 months before birth of the child, an adjusted OR of 1.11 (95% CI 0.67–1.83) was found for the risk of ADHD in the offspring when exposed in utero to ADs. This indicates no increased risk of ADHD in offspring following in utero exposure to ADs. The secondary analyses revealed no statistically significant associations either. The present study provides further evidence that an association between in utero AD exposure and ADHD in offspring might not exist. This perceived association may be caused (at least partially) by confounding by indication. The extent to which depression in the pregnant parent could cause mental disorders such as ADHD in offspring, and the mechanisms involved, should be investigated in further studies.

The contribution of alcohol-related deaths to the life-expectancy gap between people with and without depression - a cross-country comparison

BACKGROUND

Alcohol-related deaths may be among the most important reasons for the shorter life expectancy of people with depression, yet no study has quantified their contribution. We quantify the contribution of alcohol-related deaths to the life-expectancy gap in depression in four European countries with differing levels of alcohol-related mortality.

METHODS

We used cohort data linking population registers with health-care and death records from Denmark, Finland, Sweden and Turin, Italy, in 1993-2007 (210,412,097 person years, 3046,754 deaths). We identified psychiatric inpatients with depression from hospital discharge registers in Denmark, Finland, and Sweden and outpatients with antidepressant prescriptions from prescription registers in Finland and Turin. We assessed alcohol-related and non-alcohol-related deaths using both underlying and contributory causes of death, stratified by sex, age and depression status. We quantified the contribution of alcohol-related deaths by cause-of-death decomposition of the life-expectancy gap at age 25 between people with and without depression.

RESULTS

The gap in life expectancy was 13.1-18.6 years between people with and without inpatient treatment for depression and 6.7-9.1 years between those with and without antidepressant treatment. The contribution of alcohol-related deaths to the life-expectancy gap was larger in Denmark (33.6%) and Finland (18.1-30.5%) - i.e., countries with high overall alcohol-related mortality - than in Sweden (11.9%) and Turin (3.2%), and larger among men in all countries. The life-expectancy gap due to other than alcohol-related deaths varied little across countries.

CONCLUSIONS

Alcohol contributes heavily to the lower life expectancy in depression particularly among men and in countries with high overall alcohol-related mortality.

Indications related to antidepressant prescribing in the Nivel-PCD database and the SIDIAP database

BACKGROUND

Antidepressant drug consumption has increased, mainly in the elderly. This trend could be explained by the use for indications other than depression. We aimed to describe the indications related to antidepressant drug new users in two primary care settings.

METHODS

A longitudinal study of new antidepressant users aged ≥65 was conducted, with data from the Nivel-PCD (The Netherlands) and SIDIAP (Catalonia) databases (2010-2015). As a proxy for indication, diagnoses registered around the 3 months of antidepressant prescribing were collected. Indications were classified in seven categories and an additional one of non-selected indications. The percentage and incidence calculated over the total population registered was described.

RESULTS

A total of 16,537 and 199,168 new antidepressant users were identified in the Nivel-PCD and SIDIAP databases, respectively (women aged 65-69 were the most prevalent). Depression was the most frequent indication (24.0% and 31.3%), followed by anxiety (12.5% and 19.5%) and sleep disorders (10.2% and 26.4%). Tricyclic antidepressants were the most commonly prescribed in Nivel-PCD (48.7%), mainly associated with neuropathic pain, and selective serotonin reuptake inhibitor antidepressants in SIDIAP (63.1%), associated with depression. The non-selected indications category showed an upward trend in the Nivel-PCD database while in the SIDIAP database it decreased.

LIMITATIONS

It is not mandatory for physicians to register a diagnosis with each prescription.

CONCLUSIONS

Depression was the most common prescribing indication in The Netherlands and Spain, followed by anxiety and sleep disorders. The most commonly prescribed antidepressant differed between the countries and is likely explained by differences in local guidelines.

Low dose oral corticosteroids in asthma associates with increased morbidity and mortality

Long-term oral corticosteroid (OCS) treatment for severe asthma is known to cause significant adverse effects, but knowledge on effects of lower exposures in general asthma populations is limited. We aimed to explore this in a nationwide Danish asthma population.Users of asthma medication aged 18-45 were identified in the Danish nationwide registers during 1999-2018 and followed prospectively in an open cohort design. Incident OCS-users were matched 1:4 to non-users by propensity scores with replacement. Associations between OCS use and incident comorbidities were examined by Cox regression. Mortality rates, causes of death, and rates of unscheduled hospital visits were assessed.OCS-users (n 30,352) had, compared to non-users (n 121,408), an increased risk of all outcomes with evident dose-response relationships starting at cumulative doses of ≤500 mg (prednisolone equivalents). Hazard ratios ranged from 1.24 (95% CI 1.18-1.30) for fractures to 8.53 (95% CI 3.97-18.33) for adrenal insufficiency. Depression/anxiety had the highest incidence rate difference at 4.3 (95% CI 3.6-5.0) per 1000 person years. Asthma-specific mortality rates were generally low at 0.15 (95% CI 0.11-0.20) and 0.04 (95% CI 0.02-0.06) per 1000 person years for OCS-users and non-users, respectively. Mortality rates and unscheduled hospital visits increased with increasing OCS exposure.The study findings should be interpreted with their observational nature in mind. However, we found that even at low cumulative exposure, OCS use in asthma management was associated with increased risk of comorbidities, mortality, and unscheduled hospital visits. Effective strategies for optimising asthma control and reducing OCS use are pivotal in asthma management.

Use of register- and survey-based measures of anxiety in a population-based Danish cohort

OBJECTIVE

We explored the comparability of anxiety measures from register- and survey-based data including analyses of prevalence and associations with selected psychiatric and somatic diseases.

METHODS

We measured anxiety using Danish registers (hospital diagnosis and anxiolytic drug prescriptions), self-reports, symptom checklist (SCL) scores, and a clinical interview in 7493 adults with mean age 52 (SD 13.3) years who participated in a health survey between 2012 and 2015. We estimated the prevalence of anxiety, agreement between different measures and performed quantitative bias analysis.

RESULTS

The lifetime prevalence of hospital diagnosed anxiety, anxiolytic drug prescriptions, and self-reported anxiety were 4.4%, 6.2%, and 5.1%, respectively, after adjusting for selective participation. The agreement between the different anxiety measures was low. Thus, 25% with an anxiety diagnosis and 20% with anxiolytic drug prescriptions also had a high SCL score. Anxiolytic drugs were the only measure significantly associated with higher odds of heart disease. Hospital diagnosis and self-reported anxiety were associated with depression with odds ratio (OR) above 15, whereas anxiolytic drug prescriptions were less strongly associated (OR = 2.2(95% confidence interval: 1.26-3.91)). The risk estimates attenuated considerably when correcting for measurement error, whereas the ORs became slightly higher when the selective participation in the survey was accounted for.

CONCLUSION

Anxiety diagnosed in hospitals and self-reported anxiety showed low level of agreement but provide comparable results regarding frequency measures and associations with disease outcomes.

Educational and health outcomes of schoolchildren in local authority care in Scotland: A retrospective record linkage study

BACKGROUND

Looked after children are defined as children who are in the care of their local authority. Previous studies have reported that looked after children have poorer mental and physical health, increased behavioural problems, and increased self-harm and mortality compared to peers. They also experience poorer educational outcomes, yet population-wide research into the latter is lacking, particularly in the United Kingdom. Education and health share a bidirectional relationship; therefore, it is important to dually investigate both outcomes. Our study aimed to compare educational and health outcomes for looked after children with peers, adjusting for sociodemographic, maternity, and comorbidity confounders.

METHODS AND FINDINGS

Linkage of 9 Scotland-wide databases, covering dispensed prescriptions, hospital admissions, maternity records, death certificates, annual pupil census, examinations, school absences/exclusions, unemployment, and looked after children provided retrospective data on 715,111 children attending Scottish schools between 2009 and 2012 (13,898 [1.9%] looked after). Compared to peers, 13,898 (1.9%) looked after children were more likely to be absent (adjusted incidence rate ratio [AIRR] 1.27, 95% confidence interval [CI] 1.24 to 1.30) and excluded (AIRR 4.09, 95% CI 3.86 to 4.33) from school, have special educational need (SEN; adjusted odds ratio [AOR] 3.48, 95% CI 3.35 to 3.62) and neurodevelopmental multimorbidity (AOR 2.45, 95% CI 2.34 to 2.57), achieve the lowest level of academic attainment (AOR 5.92, 95% CI 5.17 to 6.78), and be unemployed after leaving school (AOR 2.12, 95% CI 1.96 to 2.29). They were more likely to require treatment for epilepsy (AOR 1.50, 95% CI 1.27 to 1.78), attention deficit hyperactivity disorder (ADHD; AOR 3.01, 95% CI 2.76 to 3.27), and depression (AOR 1.90, 95% CI 1.62 to 2.22), be hospitalised overall (adjusted hazard ratio [AHR] 1.23, 95% CI 1.19 to 1.28) for injury (AHR 1.80, 95% CI 1.69 to 1.91) and self-harm (AHR 5.19, 95% CI 4.66 to 5.78), and die prematurely (AHR 3.21, 95% CI 2.16 to 4.77). Compared to children looked after at home, children looked after away from home had less absenteeism (AIRR 0.35, 95% CI 0.33 to 0.36), less exclusion (AIRR 0.63, 95% CI 0.56 to 0.71), less unemployment (AOR 0.53, 95% CI 0.46 to 0.62), and better attainment (AIRR 0.31, 95% CI 0.23 to 0.40). Therefore, among those in care, being cared for away from home appeared to be a protective factor resulting in better educational outcomes. The main limitations of this study were lack of data on local authority care preschool or before 2009, total time spent in care, and age of first contact with social care.

CONCLUSIONS

Looked after children had poorer health and educational outcomes than peers independent of increased neurodevelopmental conditions and SEN. Further work is required to understand whether poorer outcomes relate to reasons for entering care, including maltreatment and adverse childhood events, neurodevelopmental vulnerabilities, or characteristics of the care system.

Population heterogeneity in associations between hormonal contraception and antidepressant use in Sweden: a prospective cohort study applying intersectional multilevel analysis of individual heterogeneity and discriminatory accuracy (MAIHDA)

OBJECTIVES

From a reproductive justice framework, we aimed to investigate how a possible association between hormonal contraceptive (HC) and antidepressants use (as a proxy for depression) is distributed across intersectional strata in the population. We aimed to visualise how intersecting power dynamics may operate in combination with HC use to increase or decrease subsequent use of antidepressants. Our main hypothesis was that the previously observed association between HC and antidepressants use would vary between strata, being more pronounced in more oppressed intersectional contexts. For this purpose, we applied an intersectional multilevel analysis of individual heterogeneity and discriminatory accuracy approach.

DESIGN

Observational prospective cohort study using record linkage of national Swedish registers.

SETTING

The population of Sweden.

PARTICIPANTS

All 915 954 women aged 12-30 residing in Sweden 2010, without a recent pregnancy and alive during the individual 1-year follow-up.

PRIMARY OUTCOME MEASURE

Use of any antidepressant, meaning being dispensed at least one antidepressant (ATC: N06A) during follow-up.

RESULTS

Previously mentally healthy HC users had an OR of 1.79 for use of antidepressants compared with non-users, whereas this number was 1.28 for women with previous mental health issues. The highest antidepressant use were uniformly found in strata with previous mental health issues, with highest usage in women aged 24-30 with no immigrant background, low income and HC use (51.4%). The largest difference in antidepressant use between HC users and non-users was found in teenagers, and in adult women of immigrant background with low income. Of the total individual variance in the latent propensity of using antidepressant 9.01% (healthy) and 8.16% (with previous mental health issues) was found at the intersectional stratum level.

CONCLUSIONS

Our study suggests teenagers and women with immigrant background and low income could be more sensitive to mood effects of HC, a heterogeneity important to consider moving forward.

Association between neighbourhood characteristics and antidepressant use at older ages: a register-based study of urban areas in three European countries

BACKGROUND

Research evidence on the association between neighbourhood characteristics and individual mental health at older ages is inconsistent, possibly due to heterogeneity in the measurement of mental-health outcomes, neighbourhood characteristics and confounders. Register-based data enabled us to avoid these problems in this longitudinal study on the associations between socioeconomic and physical neighbourhood characteristics and individual antidepressant use in three national contexts.

METHODS

We used register-based longitudinal data on the population aged 50+ from Turin (Italy), Stockholm (Sweden), and the nine largest cities in Finland linked to satellite-based land-cover data. This included individual-level information on sociodemographic factors and antidepressant use, and on neighbourhood socioeconomic characteristics, levels of urbanicity, green space and land-use mix (LUM). We assessed individual-level antidepressant use over 6 years in 2001-2017 using mixed-effects logistic regression.

RESULTS

A higher neighbourhood proportion of low-educated individuals predicted lower odds for antidepressant use in Turin and Stockholm when individual-level sociodemographic factors were controlled for. Urbanicity predicted increased antidepressant use in Stockholm (OR=1.02; 95% CI 1.01 to 1.03) together with more LUM (OR=1.03; 1.01-1.05) and population density (OR=1.08; 1.05-1.10). The two latter characteristics also predicted increased antidepressant use in the Finnish cities (OR=1.05; 1.02-1.08 and OR=1.14; 1.02-1.28, respectively). After accounting for all studied neighbourhood and individual characteristics of the residents, the neighbourhoods still varied by odds of antidepressant use.

CONCLUSIONS

Overall, the associations of neighbourhood socioeconomic and physical characteristics with older people's antidepressant use were small and inconsistent. However, we found modest evidence that dense physical urban environments predicted higher antidepressant use among older people in Stockholm and the Finnish cities.

Educational and health outcomes of children and adolescents receiving antidepressant medication: Scotland-wide retrospective record linkage cohort study of 766 237 schoolchildren

Background

Childhood depression is relatively common, under-researched and can impact social and cognitive function and self-esteem.

Methods

Record linkage of routinely collected Scotland-wide administrative databases covering prescriptions [prescribing information system (PIS)], hospitalizations (Scottish Morbidity Records 01 and 04), maternity records (Scottish Morbidity Records 02), deaths (National Records of Scotland), annual pupil census, school absences/exclusions, special educational needs (Scottish Exchange of Educational Data; ScotXed), examinations (Scottish Qualifications Authority) and (un)employment (ScotXed) provided data on 766 237 children attending Scottish schools between 2009 and 2013 inclusively. We compared educational and health outcomes of children receiving antidepressant medication with their peers, adjusting for confounders (socio-demographic, maternity and comorbidity) and explored effect modifiers and mediators.

Results

Compared with peers, children receiving antidepressants were more likely to be absent [adjusted incidence rate ratio (IRR) 1.90, 95% confidence interval (CI) 1.85–1.95] or excluded (adjusted IRR 1.48, 95% CI 1.29–1.69) from school, have special educational needs [adjusted odds ratio (OR) 1.77, 95% CI 1.65–1.90], have the lowest level of academic attainment (adjusted OR 3.00, 95% CI 2.51–3.58) and be unemployed after leaving school (adjusted OR 1.88, 95% CI 1.71–2.08). They had increased hospitalization [adjusted hazard ratio (HR) 2.07, 95% CI 1.98–2.18] and mortality (adjusted HR 2.73, 95% CI 1.73–4.29) over 5 years’ follow-up. Higher absenteeism partially explained poorer attainment and unemployment. Treatment with antidepressants was less common among boys than girls (0.5% vs 1.0%) but the associations with special educational need and unemployment were stronger in boys.

Conclusions

Children receiving antidepressants fare worse than their peers across a wide range of education and health outcomes. Interventions to reduce absenteeism or mitigate its effects should be investigated.

The association between self-reported mental health, medication record and suicide risk: A population wide study

Suicide mortality and mental ill health are increasing globally. Mental ill health can be measured in multiple ways. It is unclear which measure is most associated with suicide risk. This study explored the association between self-rated mental health and medication record and death by suicide. The 2011 Northern Ireland Census records of adults aged 18-74 years (n=1,098,967) were linked to a centralised database of dispensed prescription medication and death registrations until the end of 2015. Mental health status was ascertained through both a single-item self-reported question in the Census and receipt of psychotropic medication. Logistic regression models examined the association between indicators of mental ill health and likelihood of suicide mortality. Of the 1,098,967 cohort members, 857 died by suicide during the study period. Just over half of these deaths (n=429, 50.1%) occurred in individuals with neither indicator of mental ill health. Cohort members with both self-reported mental ill health and receipt of psychotropic medication had the highest risk of suicide (OR=6.13, 95%CI: 4.94–7.61), followed by those with psychotropic medication record only (OR=4.00, 95%CI: 3.28–4.88) and self-report only (OR=2.88, 95%CI: 2.16–3.84). Individuals who report mental ill health and have a history of psychotropic medication use are at a high risk of suicide mortality. However, neither measure is particularly sensitive, as both failed to signal over half of subsequent suicides. Some individuals who report poor mental health but are not in receipt of psychotropic medication are at increased risk of suicide, indicating possible unmet treatment need. The combination of the two indicators offers more precision for identifying those most at risk for targeted interventions.

•

Mental ill health is associated with an increased risk of suicide, but measuring population mental health is difficult.

•

The suicide risk associated with both subjective and objective indicators of mental ill health have not been examined.

•

Most individuals who die by suicide have no indicator of mental ill health.

•

Having both self-reported poor mental health and psychotropic medication record carried the highest risk of suicide death.

•

Increased risk of suicide in individuals who report poor mental health but are not on medication may indicate unmet need.

Maternal depression and childhood injury risk: A population-based cohort study in Denmark

AIMS

To assess the association between different stages of maternal depression and injury risk in offspring aged 0-10 years.

METHODS

Population-based cohort study of all live-born children in Denmark from 1 January 1997 until 31 December 2013 (n = 1,064,387). Main outcome measure was emergency department contacts with a main diagnosis of injury coded as DS00-DT98 (chapter XIX) according to the ICD-10. All information was obtained from Danish national registries.

RESULTS

Maternal depression was associated with higher injury hazard in the offspring throughout childhood compared to offspring of mothers with no history of depression. The strongest association was seen for the first year of life. First-time maternal depression was most strongly associated with injury in the child, especially in the first year of life (aHR = 1.70, 95% CI: 1.48-1.96). Children of mothers with relapse depression had 1.57 higher hazard of injury in the first year of life (aHR: 1.57, 95% CI: 1.44-1.70). Children of mothers with previously treated depression (postdepression) had 1.13 higher hazard of injury in the first year of life (aHR: 1.13, 95% CI: 1.09-1.17). Continuous treatment for depression was associated with a nonsignificant higher hazard of injuries in the first year of life (aHR: 1.06, 95% CI: 0.91-1.23).

CONCLUSIONS

Maternal depression was associated with higher injury risk in the offspring, particularly in early childhood. The association persisted in children of mothers with relapse depression. Our results suggest that children of mothers with depression are vulnerable several years after depression onset and treatment cessation.

Are depressive disorders caused by psychosocial stressors at work? A systematic review with metaanalysis

In the last decade, many studies have examined associations between poor psychosocial work environment and depression. We aimed to assess the evidence for a causal association between psychosocial factors at work and depressive disorders. We conducted a systematic literature search from 1980 to March 2019. For all exposures other than night and shift work and long working hours, we limited our selection of studies to those with a longitudinal design. We extracted available risk estimates for each of 19 psychosocial exposures, from which we calculated summary risk estimates with 95% confidence intervals (PROSPERO, identifier CRD42019130266). 54 studies were included, addressing 19 exposures and 11 different measures of depression. Only data on depressive episodes were sufficient for evaluation. Heterogeneity of exposure definitions and ascertainment, outcome measures, risk parameterization and effect contrasts limited the validity of meta-analyses. Summary risk estimates were above unity for all but one exposure, and below 1.60 for all but another. Outcome measures were liable to high rates of false positives, control of relevant confounding was mostly inadequate, and common method bias was likely in a large proportion of studies. The combination of resulting biases is likely to have inflated observed effect estimates. When statistical uncertainties and the potential for bias and confounding are taken into account, it is not possible to conclude with confidence that any of the psychosocial exposures at work included in this review is either likely or unlikely to cause depressive episodes or recurrent depressive disorders.

Depression Is Associated With Progression of Diabetic Nephropathy in Type 1 Diabetes

OBJECTIVE

To investigate the relationship between depression and diabetic nephropathy progression in type 1 diabetes.

RESEARCH DESIGN AND METHODS

Data from 3,730 participants without end-stage renal disease (ESRD) at baseline, participating in the Finnish Diabetic Nephropathy Study, were included. Depression was assessed in three ways. Depression diagnoses were obtained from the Finnish Care Register for Health Care. Antidepressant agent purchase data were obtained from the Drug Prescription Register. Symptoms of depression were assessed using the Beck Depression Inventory (BDI). Based on their urinary albumin excretion rate (AER), participants were classified as those with normal AER, microalbuminuria, and macroalbuminuria. Progression from normal AER to microalbuminuria, macroalbuminuria, or ESRD; from microalbuminuria to macroalbuminuria or ESRD; or from macroalbuminuria to ESRD, during the follow-up period, was investigated.

RESULTS

Over a mean follow-up period of 9.6 years, renal status deteriorated in 18.4% of the participants. Diagnosed depression and antidepressant purchases before baseline were associated with 53% and 32% increased risk of diabetic nephropathy progression, respectively. Diagnosed depression assessed during follow-up remained associated with increased risk of disease progression (32%). BDI-derived symptoms of depression showed no association with the progression, but the total number of antidepressant purchases modestly reduced the risk (hazard ratio 0.989 [95% CI 0.982-0.997]), P = 0.008). With the sample divided based on median age, the observations followed those seen in the whole group. However, symptoms of depression additionally predicted progression in those age ≤36.5 years.

CONCLUSIONS

Diagnosed depression and antidepressant purchases are associated with the progression of diabetic nephropathy in type 1 diabetes. Whether successful treatment of depression reduces the risk needs to be determined.

Association between concurrent antidepressant and hypnotic treatment and the risk of dementia: A nationwide cohort study

OBJECTIVE

This study aimed to investigate the risk of dementia among subgroups of patients receiving concurrent antidepressant and hypnotic treatment, antidepressants alone, and hypnotics alone.

METHODS

Multivariate Cox proportional hazards regression models were used to determine the effects of antidepressants and hypnotics on dementia risk after adjusting for potential confounders.

RESULTS

Compared with the reference group, patients receiving concurrent antidepressant and hypnotic treatment had the highest adjusted hazard ratio (aHR: 2.390, 95% CI: 2.224-2.536; P < 0.001) for all-cause dementia, followed by those receiving antidepressants alone (aHR: 1.919, 95% CI: 1.811-2.012; P < 0.001) and hypnotics alone (aHR: 1.458, 95% CI: 1.397-1.527; P < 0.001). With regard to dementia subtypes, trends similar to those for all-cause dementia were observed for Alzheimer's dementia, vascular dementia and other types of dementia. The sensitivity analysis conducted also found the robustness of findings. Notably, inconsistent findings were observed in subgroup with depression, revealing a null association between concurrent antidepressant and hypnotic treatment (aHR: 0.496; 95% CI: 0.183-1.343; P = 0.175) or hypnotics alone (aHR: 2.750; 95% CI: 0.797-9.482; P = 0.102) and the risk of dementia, and a negative association between antidepressants alone (aHR: 0.351; 95% CI: 0.130-0.942; P = 0.032) and the risk of dementia.

CONCLUSION

A null or negative association was observed between concurrent antidepressant and hypnotic treatment, antidepressants alone, hypnotics alone, and the dementia risk in the subgroup of patients with depression, suggesting the absence of an association between dementia risk and antidepressants alone or hypnotics alone.

Antidepressant use in Australia and Sweden-A cross-country comparison

PURPOSE

To compare the dispensed use of antidepressants in Australia and Sweden.

METHODS

We analysed publicly available data from Australia and Sweden on dispensed use of antidepressants from 2006 to 2018.

RESULTS

The dispensed use of antidepressants has increased in both Australia and Sweden. Australia had a more rapid increase resulting in a higher total use. The utilisation profile was similar in both countries; SSRIs were the most commonly used group, "other antidepressants" were the group that increased the most, and seven of the eight most used substances were the same. There were differences in which antidepressants were most used, with the three most prescribed antidepressants being escitalopram, sertraline, and venlafaxine in Australia; and mirtazapine, sertraline, and citalopram in Sweden.

CONCLUSION

Dispensed use of antidepressants has increased remarkably in both Australia and Sweden between 2006 and 2018. Although similar with regard to economic status and health care system, use of antidepressants differs between both countries. This may be a result of a combination of factors related to medical, contextual and policy evidence. The differences displayed in this study may reflect varying accessibility of treatments, national programmes enhancing mental health literacy in the population, clinical prescribing guidelines and timing of approval of new antidepressants.

Work-unit social capital and incident purchase of psychotropic medications: A longitudinal cohort-study of healthcare workers

BACKGROUND

Whether workplace social capital affects employees' mental health is debated. We examined the association between work-unit aggregated social capital and incident purchase of psychotropic medications among employees.

METHODS

We used data from the WHALE (Well-being in Hospital Employees) cohort study. The study population comprised 21,711 employees without recent psychotropic purchase-history nested within 2283 work units in the Capital Region of Denmark. Employees were invited to participate in a survey in March 2014 (86% response). We assessed workplace social capital by eight items (covering trust/justice and collaboration) and aggregated the mean of responses up to each work unit and categorized the scores into quartiles. Data on psychotropic purchases (antidepressants and anxiolytics/hypnotics/sedatives) were extracted via linkage to national registers. Using two-level mixed-effects survival models, we analyzed the association between work-unit social capital and psychotropic purchases during a one-year follow-up period adjusting for individual-level workplace social capital.

RESULTS

Low work-unit social capital was associated with higher purchases of overall psychotropic medications in a dose-response manner (low-versus-high: HR=1.32, 95% CI=1.05-1.65), but this effect attenuated after adjusting for individual-level workplace social capital (HR=1.14, 95% CI=0.88-1.46). Low work-unit social capital was associated with higher purchases of antidepressants (HR=1.78, 95% CI=1.16-2.73) even after adjusting for individual-level workplace social capital (HR=1.69, 95% CI=1.05-2.73).

LIMITATIONS

Medical doctors/dentists were underrepresented in the data on workplace social capital.

CONCLUSIONS

Low work-unit social capital may be associated with higher use of antidepressants among healthcare employees. Interventions to improve social capital could potentially promote mental health at work in the healthcare setting.

Antidepressant prescriptions and associated factors in men with prostate cancer and their female partners

Purpose

To estimate the risk of first-time antidepressant prescriptions as a proxy for depression or anxiety and associated risk factors in patients with prostate cancer and their female partners.

Methods

We followed all men (n = 25,126) and their female cohabiting partners (n = 8785) without a history of cancer or antidepressants from the Danish Diet, Cancer and Health cohort from 1997 to 2014 or 2010, respectively. We estimated the cumulative incidence of first-time antidepressant prescriptions in men with prostate cancer compared with cancer-free men and their respective female partners, using the Danish National Prescription Registry. Sociodemographic, lifestyle-related, and clinical risk factors were assessed using Cox regression models.

Results

A total of 1828 men were diagnosed with prostate cancer of whom 15% received antidepressants. The unadjusted hazard ratio of antidepressant prescription was 2.18 (95%CI, 1.92, 2.48) for men with prostate cancer and 1.27 (95%CI, 0.87, 1.85) for their partners, compared with cancer-free men and their partners, respectively. After adjusting for sociodemographic, lifestyle-related, and comorbidity factors, this risk was 2-fold to 4-fold increased among patients, but not significantly increased among partners. Significant risk factors among patients were curative and palliative treatment (vs. active surveillance and watchful waiting), nonlocalized disease, and short education.

Conclusions

Men with prostate cancer have a higher risk of receiving antidepressant medication than cancer-free men. Clinical characteristics can help clinicians in identifying patients at a high risk of depression or anxiety.

Implications for Cancer Survivors

Men with prostate cancer who experience symptoms of depression or anxiety should seek professional help early on. Patient education could aid in raising awareness and reducing the stigma associated with mental disorders.

Electronic supplementary material

The online version of this article (10.1007/s11764-020-00947-y) contains supplementary material, which is available to authorized users.

Neurodevelopmental multimorbidity and educational outcomes of Scottish schoolchildren: A population-based record linkage cohort study

BACKGROUND

Neurodevelopmental conditions commonly coexist in children, but compared to adults, childhood multimorbidity attracts less attention in research and clinical practice. We previously reported that children treated for attention deficit hyperactivity disorder (ADHD) and depression have more school absences and exclusions, additional support needs, poorer attainment, and increased unemployment. They are also more likely to have coexisting conditions, including autism and intellectual disability. We investigated prevalence of neurodevelopmental multimorbidity (≥2 conditions) among Scottish schoolchildren and their educational outcomes compared to peers.

METHODS AND FINDINGS

We retrospectively linked 6 Scotland-wide databases to analyse 766,244 children (390,290 [50.9%] boys; 375,954 [49.1%] girls) aged 4 to 19 years (mean = 10.9) attending Scottish schools between 2009 and 2013. Children were distributed across all deprivation quintiles (most to least deprived: 22.7%, 20.1%, 19.3%, 19.5%, 18.4%). The majority (96.2%) were white ethnicity. We ascertained autism spectrum disorder (ASD) and intellectual disabilities from records of additional support needs and ADHD and depression through relevant encashed prescriptions. We identified neurodevelopmental multimorbidity (≥2 of these conditions) in 4,789 (0.6%) children, with ASD and intellectual disability the most common combination. On adjusting for sociodemographic (sex, age, ethnicity, deprivation) and maternity (maternal age, maternal smoking, sex-gestation-specific birth weight centile, gestational age, 5-minute Apgar score, mode of delivery, parity) factors, multimorbidity was associated with increased school absenteeism and exclusion, unemployment, and poorer exam attainment. Significant dose relationships were evident between number of conditions (0, 1, ≥2) and the last 3 outcomes. Compared to children with no conditions, children with 1 condition, and children with 2 or more conditions, had more absenteeism (1 condition adjusted incidence rate ratio [IRR] 1.28, 95% CI 1.27-1.30, p < 0.001 and 2 or more conditions adjusted IRR 1.23, 95% CI 1.20-1.28, p < 0.001), greater exclusion (adjusted IRR 2.37, 95% CI 2.25-2.48, p < 0.001 and adjusted IRR 3.04, 95% CI 2.74-3.38, p < 0.001), poorer attainment (adjusted odds ratio [OR] 3.92, 95% CI 3.63-4.23, p < 0.001 and adjusted OR 12.07, 95% CI 9.15-15.94, p < 0.001), and increased unemployment (adjusted OR 1.57, 95% CI 1.49-1.66, p < 0.001 and adjusted OR 2.11, 95% CI 1.83-2.45, p < 0.001). Associations remained after further adjustment for comorbid physical conditions and additional support needs. Coexisting depression was the strongest driver of absenteeism and coexisting ADHD the strongest driver of exclusion. Absence of formal primary care diagnoses was a limitation since ascertaining depression and ADHD from prescriptions omitted affected children receiving alternative or no treatment and some antidepressants can be prescribed for other indications.

CONCLUSIONS

Structuring clinical practice and training around single conditions may disadvantage children with neurodevelopmental multimorbidity, who we observed had significantly poorer educational outcomes compared to children with 1 condition and no conditions.

Association between over-indebtedness and antidepressant use: A cross-sectional analysis

Background

Burden of disease caused by depression and its association with socioeconomic status is well documented. However, research on over-indebtedness is scarce although millions of European citizens in all socioeconomic positions are over-indebted. Prior studies suggested that over-indebtedness is associated with poor physical and mental health.

Aims

Investigate the association between over-indebtedness and antidepressant use in Germany.

Method

A cross-sectional survey among debt advice agencies’ clients was conducted in North Rhine-Westphalia, Germany, in 2017 (OID). Data were merged with the first wave of the German Health Interview and Examination Survey for Adults (DEGS1). Descriptive statistics and logistic regression analysis were used to examine antidepressant use in the previous 7 days (OID: n = 699; DEGS1: n = 7115).

Results

Prevalence of antidepressant use was higher in the over-indebted (12.3%) than the general population (5.0%). The over-indebted were significantly more likely to use antidepressants than the general population even after controlling for other socioeconomic, demographic and health factors (adjusted odds ratio 1.83; 95% confidence interval 1.35–2.48).

Conclusions

Stakeholders in health care, debt counselling, research and social policy should consider the link between over-indebtedness and mental illness to advance the understanding of health inequalities and to help those who have mental health and debt problems.

Is impending or actual death of a spouse with dementia bad for mental health? Antidepressant use surrounding widowhood

Background

Previous studies have shown that the risk of death is elevated after the death of a spouse. Limited evidence is available on changes in mental health before and after bereavement among individuals whose spouse dies of dementia.

Methods

We analyzed changes in the 3-month prevalence of antidepressant use for 5 years before and 3 years after widowhood for individuals whose spouses died of either dementia or other causes. The study used data of 41 855 widowed individuals and repeated-measures logistic regression analyses. Antidepressant use was based on the prescription register of Finland in 1995–2007.

Results

Five years before widowhood, the 3-month prevalence for antidepressant use was 4% among widowing men and 6–7% among widowing women, regardless of whether the spouse died of dementia or other causes. Further changes in antidepressant use depended on a spouse’s cause of death. Women whose spouses died of dementia experienced large increase in antidepressant use starting from 3 to 4 years prior to widowhood, whereas other widows did not experience large increase until after widowhood. The trajectories for men were similar. Antidepressant use following the death of a spouse with dementia stayed at a new heightened level after widowhood.

Conclusions

The trajectories of antidepressant use indicate that the process of losing a spouse to dementia is bad for mental health, already a few years prior to widowhood. There are no clear improvements in mental health after the death of a spouse with dementia. Support services for individuals whose spouses’ dementia progresses are needed.

Effects of procedural justice on prospective antidepressant medication prescription: a longitudinal study on Swedish workers

BACKGROUND

Procedural justice has been linked to several mental health problems, but most studies have used self-reported data. There exist a need to assess the link between procedural justice and health using outcomes that are not only self-reported. The aim of the current study was to examine whether perceived procedural justice at work is prospectively associated with antidepressant medication prescription.

METHODS

Data from 4374 participants from the Swedish Longitudinal Survey of Health (SLOSH) were linked to the Swedish National Prescribed Drug register. Based on their perceived procedural justice at two times (2010 and 2012), participants were divided into four groups: stable low, increasing, decreasing and stable high justice perceptions. Using Cox regression, we studied how the course of stability and change in perceived procedural justice affected the rate of prescription of antidepressant medication over the next 2 years. Participants with missing data and those who had been prescribed antidepressant medication in the period leading up to 2012 were excluded in the main analyses to determine incident morbidity.

RESULTS

The results showed that after adjustment for sex, age, education, socioeconomic position, marital status, and insecure employment a decrease in perceived procedural justice over time was associated with greater receipt of antidepressants compared to people with stable high perceptions of procedural justice (HR 1.76, 95% CI: 1.16 to 2.68). Being female and having insecure employment were also associated with higher hazards of antidepressant prescription.

CONCLUSIONS

These findings strengthen the notion that procedural justice at work influences psychological well-being, as well as provide new insights into how procedural justice perceptions may affect mental health.

Psychotropic Drug-Associated Pneumonia in Older Adults

The use of psychotropic drugs (antipsychotics, benzodiazepines and benzodiazepine-related drugs, and antidepressants) is common, with a prevalence estimates range of 19-29% among community dwelling older adults. These drugs are often prescribed for off-label use, including neuropsychiatric symptoms. The older adult population also has high rates of pneumonia and some of these cases may be associated with adverse drug events. In this narrative review, we summarize the findings from current observational studies on the association between psychotropic drug use and pneumonia in older adults. In addition to studies assessing the use of psychotropics, we included antiepileptic drugs, as they are also central nervous system-acting drugs, whose use is becoming more common in the aging population. The use of antipsychotics, benzodiazepine, and benzodiazepine-related drugs are associated with increased risk of pneumonia in older adults (≥ 65 years of age), and these findings are not limited to this age group. Minimal and conflicting evidence has been reported on the association between antidepressant drug use and pneumonia, but differences between study populations make it difficult to compare findings. Studies regarding antiepileptic drug use and risk of pneumonia in older persons are lacking, although an increased risk of pneumonia in antiepileptic drug users compared with non-users in persons with Alzheimer's disease has been reported. Tools such as the American Geriatric Society Beers Criteria and the STOPP/START criteria for potentially inappropriate medications aids prescribers to avoid these drugs in order to reduce the risk of adverse drug events. However, risk of pneumonia is not mentioned in the current criteria and more research on this topic is needed, especially in vulnerable populations, such as persons with dementia.

Musculoskeletal pain as a predictor for depression in the general working population of Denmark

Aim: This study examines the association between musculoskeletal complaints and subsequent use of antidepressants and/or psychiatric hospital treatment for depressive mood disorders in the Danish labour force. Methods: The study is based on two cohorts. The first cohort is the total labour force in 21 Danish municipalities (n=693,860), where the risk of depression (psychiatric diagnosis or antidepressant treatment) during 2010–2015 was compared between individuals on long-term sickness absence due to musculoskeletal disorders (MSD) and non-sick-listed gainfully employed individuals. The second cohort is a random sample of the Danish labour force (n=9248) who were followed during 2011–2015 to estimate the association between self-rated musculoskeletal pain and depression. All analyses were controlled for age, sex, calendar period and socio-economic status. Results: Compared to non-sick-listed gainfully employed individuals, there was an increased risk of depression in individuals sick-listed with MSD, with rate ratios of 2.39 (99% confidence interval (CI) 2.22–2.58) for individuals with less severe MSD and 4.27 (99% CI 3.98–4.59) for individuals with more severe MSD. There was also an increased risk of depression associated with self-rated pain (yes vs. no), with a rate ratio of 2.17 (99% CI 1.69–2.78). The population attributable fraction of depression from musculoskeletal pain was 0.35 (99% CI 0.24–0.45). Conclusions: The results of the present study indicate that musculoskeletal pain is an important predictor of indicators of depression in the general working population of Denmark.

Risk of Depression After Radical Prostatectomy-A Nationwide Registry-based Study

BACKGROUND

Development of depression in prostate cancer patients depends on multiple disease- and patient-related factors.

OBJECTIVE

To investigate the risk of depression following radical prostatectomy focussing on the impact of surgery and subsequent treatment with salvage radiation or androgen deprivation therapy.

DESIGN, SETTING, AND PARTICIPANTS

A population-based cohort study of 5570 men who underwent radical prostatectomy in Denmark from 1998 to 2011 was identified in the Danish Prostate Cancer Registry.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

Data on covariates and primary outcome defined as a hospital contact for depression or a redeemed antidepressant prescription were obtained from nationwide Danish registries. The risk of depression was evaluated using cumulative incidence functions and Cox models with time since surgery as an underlying time scale. Exposure to salvage procedures was included as time-varying covariates, and analyses were adjusted for confounders.

RESULTS AND LIMITATIONS

The cumulative incidence of depression was increased in men who had undergone surgery compared with cancer-free men throughout follow-up of up to 18yr, particularly among men on androgen deprivation therapy. Compared with no subsequent treatment, the risk of depression was increased with subsequent androgen deprivation therapy (hazard ratio [HR] 1.8, 95% confidence interval [CI] 1.4-2.3), salvage radiation (HR 1.3, 95% CI 1.0-1.6), and the treatments combined (HR 2.2, 95% CI 1.8-2.8) after adjustments for age, year of surgery, income, and cohabitation status. Further adjustment for comorbidity hardly changed the estimates.

CONCLUSIONS

Radical prostatectomy and subsequent salvage procedures increase the risk of depression, and men with subsequent androgen deprivation therapy are mainly at risk. Clinicians should thus be aware of depressive symptoms in patients receiving treatment for postsurgical relapse.

PATIENT SUMMARY

In a population-based study, we found that radical prostatectomy and subsequent treatments with either radiation or endocrine manipulation significantly increased the risk of developing clinical depression.

Educational level and the risk of depression after prostate cancer

Background: The risk of depression is inversely associated with socioeconomic position in the general population; however, studies on the association in cancer populations are limited. The aim was to investigate if shorter education was associated with a higher risk of depression following prostate cancer diagnosis. Material and methods: This is a cohort study among participants in the Danish prospective Diet, Cancer and Health (DCH) study including 2337 men diagnosed with prostate cancer between 1997 and 2014. Primary outcome was indication of moderate to severe depression, defined as either a first hospital contact for depression or first use of antidepressants. The main indicator of socioeconomic position was education categorized into short (<9 years of education), medium (9-12 years) and long (>12 years). We retrieved information on education, depression and cohabitation status from Danish National Registries. Information on stage, primary treatment, lifestyle and anthropometry was obtained from medical records and questionnaires. Data were analyzed using Cox proportional hazards models adjusted for possible confounders and mediators. Results: The hazard of first depression was 1.86-fold higher (95% CI, 1.36-2.54) in prostate cancer patients with short education compared to those with long education. Adjustment for stage and primary treatment did not change the HRs, while adding comorbidity and lifestyle factors resulted in an HR of 1.65 (95% CI, 1.19-2.29). Men with medium education had a non-statistically significant 1.23-fold higher hazard of depression (95% CI, 0.95-1.59) than men with long education in the fully adjusted model. Educational differences were present in the cumulative incidence of first depression among cancer-free DCH study participants, but the level of first depression was substantially lower in this population than in prostate cancer patients. Conclusions: We found indication of social inequality in depression following prostate cancer. Patients and particularly men with short education might benefit from psychosocial intervention and support.

Distinct Profiles on Subjective and Objective Adherence Measures in Patients Prescribed Antidepressants

Objective

A recurrent observation is that associations between self-reported and objective medication adherence measures are often weak to moderate. Our aim was therefore to identify patients with different profiles on self-reported and objective adherence measures.

Study Design and Setting

This was an observational study of 221 community pharmacy patients who were dispensed antidepressants. Adherence profiles were estimated with Latent Profile Analysis (LPA) using data on self-reported adherence (Medication Adherence Rating Scale) complemented with data on medication beliefs (perceived necessity and concerns measured with the Beliefs about Medicines Questionnaire) and data from objective adherence measures (electronic monitoring of medication taking and the Medication Possession Ratio calculated from pharmacy dispensing data).

Results

‘Goodness-of-fit’ statistics indicated the presence of three classes: “concordantly high adherent” (83%, high adherence on all measures), “concordantly suboptimal adherent” (11%, low adherence on all measures), and “discordant” (6%, high self-reported adherence but lower adherence on objective measures).

Conclusion

Most patients had concordant outcomes on self-reported and objective measures of adherence. A small discordant class had high self-reported but low objective adherence. LPA will enable sensitivity analyses in future studies, for example excluding patients from the discordant class.

Exposure to work stress and use of psychotropic medications: a systematic review and meta-analysis

BACKGROUND

There is good evidence that job stressors are prospectively related to mental health problems, particularly depressive symptoms. This review aimed to examine whether job stressors were also related to use of psychotropic medications.

METHODS

Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses approach, we examined seven electronic databases that indexed literature from a wide range of disciplines. Inclusion criteria were (1) the study included a job stressor or psychosocial working condition as an exposure, and (2) psychotropic medication was an outcome. All effect-size estimates were considered but needed to present either a SE or 95% CIs to be included in meta-analyses. Data were pooled between studies using the relative risk (RR) or odds ratio (OR) and 95% CIs.

RESULTS

There were 18 unique studies with non-overlapping exposures eligible for inclusion in the quantitative meta-analysis. High job demands were associated with a statistically significant increased risk of psychotropic medication use (RR 1.16, 95% CI 1.02 to 1.31). There was also an elevated RR in relation to work-family conflict (RR 1.26, 95% CI 1.03 to 1.48). In studies reporting OR, high job demands were associated with an OR of 1.39 (95% CI 1.06 to 1.71).

CONCLUSIONS

The findings of this review highlight the need for policy and programme attention to reduce harmful exposure to psychosocial job stressors. Health-service use measures should be considered as outcomes and may represent more severe mental health conditions.

Risk of preterm birth in primiparous women with exposure to antidepressant medication before pregnancy and/or during pregnancy - impact of body mass index

INTRODUCTION

Preterm birth is a major cause of infant mortality. It is unknown whether body mass index (BMI) influences the risk of preterm birth in women, who prenatally use antidepressants.

MATERIALS AND METHODS

The study cohort (N = 6920) consists of all primiparous European born women without previously diagnosed diabetes from the city of Vantaa, Finland, who delivered a singleton child between 2009 and 2015. Data on births, pre-pregnancy BMI and purchases of antidepressants from 12 months before conception until delivery were obtained from Finnish National Registers.

RESULTS

Of the primiparous women, 9.9% used antidepressants. The overall prevalence of preterm birth was 5.2%. In women with a pre-pregnancy BMI <18.5 kg/m², the Odds Ratio (OR) for preterm birth among antidepressant users compared with those who were non-users was 1.91 (95% confidence intervals [CI] 0.40 to 9.15, adjusted for age, smoking, education, use of fertility treatments and number of previous pregnancies) while in women with a pre-pregnancy BMI ≥30 kg/m², the OR was 0.53 (95% CI 0.21-1.36), respectively.

DISCUSSION

Primiparous women using antidepressants, who were underweight before conception should be closely monitored and provided tailored care in a maternity clinic to minimize the risk of preterm birth. Key messages In primiparous women, one in ten used antidepressant medications before pregnancy and/or during pregnancy. In primiparous women, the prevalence of preterm birth was 5%. Underweight primiparous women using antidepressants should be closely monitored and provided tailored care in a maternity clinic.

Identifying patients using antidepressants for the treatment of depression: A predictive algorithm for use in pharmaceutical and medical claims data

PURPOSE

Records of antidepressant dispensings are often used as a surrogate measure of depression. However, as antidepressants are frequently prescribed for indications other than depression, this is likely to result in misclassification. This study aimed to develop a predictive algorithm that identifies patients using antidepressants for the treatment of depression.

METHODS

Pharmaceutical Benefits Scheme (PBS) and Medicare Benefits Schedule (MBS) claims data were linked to follow-up questionnaires (completed in 2012-2013) for participants of the 45 and Up Study-a cohort study of residents of New South Wales, Australia, aged 45 years and older. The sample composed participants who were dispensed an antidepressant in the 30 days prior to questionnaire completion (n = 3162). An algorithm based on patient characteristics, pharmaceutical dispensings, and claims for mental health services was built using group-lasso interaction network (glinternet), with self-reported receipt of treatment for depression as the outcome. The predictive performance of the algorithm was assessed via bootstrap resampling.

RESULTS

The algorithm composes 15 main effects and 11 interactions, with type of antidepressant dispensed and claims for mental health services the strongest predictors. The ability of the algorithm to discriminate between antidepressant users with and without depression was 0.73. At a predicted probability cut-off of 0.6, specificity was 93.8% and sensitivity was 23.6%.

CONCLUSIONS

Using this algorithm with a high probability cut-off yields high specificity and facilitates the exclusion of individuals using antidepressants for indications other than depression, thereby mitigating the risk of confounding by indication when evaluating the outcomes of antidepressant use.

Effect of work schedule on prospective antidepressant prescriptions in Sweden: a 2-year sex-stratified analysis using national drug registry data

INTRODUCTION

Depression-related mood disorders affect millions of people worldwide and contribute to substantial morbidity and disability, yet little is known about the effects of work scheduling on depression. This study used a large Swedish survey to prospectively examine the effects of work schedule on registry-based antidepressant prescriptions in females and males over a 2-year period.

METHODS

The study was based on an approximately representative sample (n=3980 males, 4663 females) of gainfully employed participants in the Swedish Longitudinal Occupational Survey of Health. Sex-stratified analyses were conducted using logistic regression. For exposure, eight categories described work schedule in 2008: 'regular days' (three categories of night work history: none, ≤3 years, 4+ years), 'night shift work', 'regular shift work (no nights)', 'rostered work (no nights)', 'flexible/non-regulated hours' and 'other'. For the primary outcome measure, all prescriptions coded N06A according to the Anatomical Therapeutic Chemical System were obtained from the Swedish National Prescribed Drug Register and dichotomised into 'any' or 'no' prescriptions between 2008 and 2010. Estimates were adjusted for potential sociodemographic, health and work confounders, and for prior depressive symptoms.

RESULTS

In 2008, 22% of females versus 19% of males worked outside of regular daytime schedule. Registered antidepressant prescription rates in the postsurvey period were 11.4% for females versus 5.8% for males. In fully adjusted models, females in 'flexible/non-regulated' schedules showed an increased OR for prospective antidepressant prescriptions (OR=2.01, 95% CI=1.08 to 3.76). In males, odds ratios were most increased in those working 'other' schedules (OR=1.72, 95% CI=0.75 to 3.94) and 'Regular days with four or more years' history of night work' (OR=1.54, 95% CI=0.93 to 2.56).

CONCLUSIONS

This study's findings support a relationship between work schedule and prospective antidepressant prescriptions in the Swedish workforce. Future research should continue to assess sex-stratified relationships, using detailed shift work exposure categories and objective registry data where possible.

Children's age at parental divorce and depression in early and mid-adulthood

This study aimed to assess whether children's age at their parents' divorce is associated with depression in early and mid-adulthood, as indicated by medication purchase. A sibling comparison method was used to control for unobserved factors shared between siblings. The data were extracted from the Norwegian Population Register and Norwegian Prescription Database and included about 181,000 individuals aged 20-44 who had experienced parental divorce and 636,000 who had not. Controlling for age in 2004, sex, and birth order, children who were aged 15-19 when their parents divorced were 12 per cent less likely to purchase antidepressants as adults in 2004-08 than those experiencing the divorce aged 0-4. The corresponding reduction for those aged 20+ at the time of divorce was 19 per cent. However, the association between age at parental divorce and antidepressant purchases was only evident among women and those whose mothers had low education.

Association between prescribed antidepressants and other prescribed drugs differ by gender: a nationwide register-based study in Sweden

BACKGROUND

People with depression are prescribed more drugs than people in general, partly due to comorbidity with other conditions. However, little research has been done on depression-related drug use from a gender perspective.

AIM

Examine the association between antidepressants, other types of prescribed drugs, and polypharmacy, by gender.

METHODS

Data on drugs dispensed October to December 2016 to all Swedish citizens aged 18-84 years were collected from the Swedish prescribed drug register. Logistic regression analyses were performed to examine the associations between antidepressants and other drugs, by gender.

RESULTS

For both men and women, associations were found between antidepressants and drugs for alimentary tract problems, respiratory problems, blood, nervous system, analgesics, and polypharmacy. However, for women, but not men, associations were also found for drugs for diabetes, musculoskeletal problems, dermatological problems, and systemic hormones.

CONCLUSIONS

Associations were found between antidepressants and many other types of drugs for both men and women; indicating comorbidity between depression and other conditions. Further, some of the associations between antidepressants and other drugs were found to be specific among women. Whether this indicates that men and women differ in comorbidity between depression and other conditions cannot be concluded based on this cross-sectional study. However, comorbidity impairs the possibility of recovery; in the somatic condition as well as the depression. Thus, physicians need to be aware that the association between antidepressants and other types of drugs are more common among women than men.

The cost-utility of stepped-care algorithms according to depression guideline recommendations - Results of a state-transition model analysis

BACKGROUND

Evidence-based clinical guidelines for major depressive disorder (MDD) recommend stepped-care strategies for sequencing evidence-based treatments conditional on treatment outcomes. This study aims to evaluate the cost-effectiveness of stepped care as recommended by the multidisciplinary clinical guideline vis-à-vis usual care in the Netherlands.

METHODS

Guideline-congruent care as described in stepped-care algorithms for either mild MDD or moderate and severe MDD was compared with usual care in a health-economic state-transition simulation model. Incremental costs per QALY gained were estimated over five years from a healthcare perspective.

RESULTS

For mild MDD, the cost-utility analysis showed a 67% likelihood of better health outcomes against lower costs, and 33% likelihood of better outcomes against higher costs, implying dominance of guideline-congruent stepped care. For moderate and severe MDD, the cost-utility analysis indicated a 67% likelihood of health gains at higher costs following the stepped-care approach and 33% likelihood of health gains at lower costs, with a mean ICER of about €3,200 per QALY gained. At a willingness to pay threshold of €20,000 per QALY, the stepped-care algorithms for both mild MDD and moderate or severe MDD is deemed cost-effective compared to usual care with a greater than 95% probability.

LIMITATIONS

The findings of our decision-analytic modelling are limited by the accuracy and availability of the underlying evidence. This hampers taking into account all individual differences relevant to optimise treatment to individual needs.

CONCLUSIONS

It is highly likely that guideline-congruent stepped care for MDD is cost-effective compared to usual care. Our findings support current guideline recommendations.

Late-life suicidal behaviours among new users of antidepressants: a prospective population-based study of sociodemographic and gender factors in those aged 75 and above

OBJECTIVE

To investigate sociodemographic and gender factors associated with suicide and suicide attempts among new users of antidepressants aged 75 and above.

DESIGN

Register-based cohort study.

SETTING

National population-based cohort of Swedish residents aged ≥75 years.

PARTICIPANTS

185 225 patients who initiated antidepressant medication between 1 January 2007 and 31 December 2013 were followed until 31 December 2014.

MAIN OUTCOME MEASURES

Suicide and suicide attempts. Fine and Gray regression models were used to analyse the sociodemographic factors (age, country of birth, marital status, education level, last occupation, income and social allowance) associated with suicidal behaviours in the entire cohort and by gender.

RESULTS

During follow-up, 295 suicides and 654 suicide attempts occurred. Adjusted sub-hazard ratios (aSHRs) for suicide were lower among older age groups (aSHR 0.73, 95% CI 0.53 to 0.99 for those 85-89 years; and aSHR 0.53, 95% CI 0.33 to 0.86 for those ≥90 years). A similar pattern was observed for suicide attempts. Suicide attempts were more common among those born in foreign countries (aSHR 1.58, 95% CI 1.16 to 2.15 for those born in another Nordic country; and aSHR 1.43, 95% CI 1.06 to 1.93 for those born in non-Nordic countries). In the gender-stratified analyses, being single or divorced, and born in another Nordic country was associated with a higher risk of suicide among men. Educational and occupational history and being born in a non-Nordic country influenced risk of suicidal behaviours in women.

CONCLUSION

Suicidal behaviours occurred more commonly among new users who were 'younger' old adults and those with foreign background, suggesting that those groups might require greater support when initiating antidepressant therapy. Our findings suggest the need for gender-specific, multifaceted approaches to the prevention of suicidal behaviours in late life.

Substance abuse in parents and subsequent risk of offspring psychiatric morbidity in late adolescence and early adulthood: A longitudinal analysis of siblings and their parents

The effects of substance abuse on other family members are not fully established. We estimate the contribution of parental substance abuse on offspring psychiatric morbidity in late adolescence and early adulthood, with emphasis on the timing and persistency of exposure. We used a nationally representative 20% sample of Finnish families with children born in 1986-1996 (n = 136,604) followed up in 1986-2011. We identified parental substance abuse and offspring psychiatric morbidity from hospital discharge records, death records and medication registers. The effects of parental substance abuse at ages 0-4, 5-9 and 10-14 on psychiatric morbidity after age 15 were estimated using population averaged and sibling fixed effects models; the latter controlling for unobserved factors shared by siblings. Parental substance abuse at ages 0-14 was associated with almost 2-fold increase in offspring psychiatric morbidity (HR = 1.86, 95% CI 1.78-1.95). Adjustment for childhood parental education, income, social class and family type reduced these effects by about 50%, with some further attenuation after adjustment for time-varying offspring characteristics. In the sibling fixed effects models those exposed at 0-4 or 5-9 years had 20% (HR = 1.20, 95% CI 0.90-1.60) and 33% (HR = 1.33, 95% CI 1.01-1.74) excess morbidity respectively. Also in sibling models those with early exposure at ages 0-4 combined with repeated exposure in later childhood had about 80-90% higher psychiatric morbidity as compared to never exposed siblings (e.g. for those exposed throughout childhood HR = 1.81, 95% CI 1.01-3.25). Childhood exposure to parental substance abuse is strongly associated with subsequent psychiatric morbidity. Although these effects are to a large extent due to other characteristics shared within the parental home, repeated exposure to parental substance abuse is independently associated with later psychiatric morbidity.