Long-term sickness absence and disability pension with psychiatric diagnoses: a population-based cohort study

Is teenage parenthood associated with early use of disability pension? Evidence from a longitudinal study

BACKGROUND

Over the past decades the number of young people using disability pensions (DP) has gradually increased in Europe but the reasons for this change are poorly understood. We hypothesize that teenage parenthood could be associated with an increased risk of receiving early DP. The aim of this study was to examine the association between having a first child at age 13-19 and receiving DP at age 20-42 (here called early DP).

METHODS

A longitudinal cohort study was undertaken based on national register data obtained from 410,172 individuals born in Sweden in 1968, 1969, and 1970. Teenage mothers and fathers were followed until age 42 and compared to non-teenage parent counterparts to examine their early receipt of DP. Descriptive analysis, Kaplan-Meier curves, and Cox regression analyses were performed.

RESULTS

The proportion of teenage parents was more than twice higher in the group that received early DP (16%) compared to the group that did not receive early DP (6%) during the study duration. A higher proportion of teenage mothers and fathers started to receive DP at 20-42 years old compared to non-teenage parents, and the difference between the two groups increased during the observation period. A strong association was observed between being a teenage parent and receiving early DP, significant both independently and after adjusting for the year of birth and the father's level of education. From the age of 30 to 42 years, teenage mothers used early DP more often than teenage fathers or non-teenage parents, and this difference also increased during the follow-up period.

CONCLUSION

A strong association was found between teenage parenthood and the use of DP between 20 and 42 years of age. Teenage mothers used DP more than teenage fathers and non-teenage parents.

Fitness to re-join job: Neuropsychiatric perspective

Objectives

Evaluating "Fitness to Re-join Job" and certification in persons with Neuro-Psychiatric Disorders is an indispensable professional responsibility. However, there is little documented guidance on clinically approaching this particular issue. This study aimed to study the sociodemographic, clinical, and employment profile of patients who sought fitness to re-join their job from the tertiary neuropsychiatric center.

Materials and Methods

This study was carried out at the National Institute of Mental Health and Neurosciences in Bengaluru, India. A retrospective chart review was adapted for the purpose. One hundred and two case files referred to medical board for fitness to rejoin the duty were reviewed from January 2013 to December 2015. Apart from the descriptive statistics, the Chi-square test or Fisher exact test was used to test the association between categorical variables.

Results

Patients' mean (standard deviation) age was 40.1 (10.1) years; 85.3% were married, and 91.2% were male. Common reasons for seeking "fitness certification" were work absenteeism (46.1%), illness affecting the work (27.4%), and varied reasons (28.4%). The presence of neurological disorders, sensory-motor deficits, cognitive decline, brain damage/insult, poor drug compliance, irregular follow-ups, and poor or partial treatment response were associated with an unfitness to rejoin the job.

Conclusion

This study shows that work absenteeism and the impact of illness on work are common reasons for referral. Irreversible neurobehavioural problems and deficits impacting work are common reasons for unfitness to rejoin the job. There is a need for a systematic schedule to assess the fitness for the job in patients with neuropsychiatric disorders.

Role of social benefits for future long-term sickness absence, disability pension and unemployment among individuals on sickness absence due to mental diagnoses: a competing risk approach

Purpose

To investigate associations between social benefits and disability pension (DP), long-term sickness absence (LTSA, ≥ 90 days), or unemployment among Swedish twins with sickness absence (SA) due to mental diagnoses.

Methods

This population-based prospective twin study included register data on first incident SA spell (< 90 days) due to mental diagnoses (ICD 10 codes F00-F99) during the follow-up 2005–2016. SA < 90 days due to other diagnoses than mental diagnoses or any other social insurance benefit was identified for the preceding year of the first incident SA spell due to mental diagnoses (coded yes/no). Comparing those with any previous social benefits vs without, cumulative incidence curve to compare time to an event, and Cox proportional hazards models for cause-specific hazard ratios (HR, 95% confidence intervals, CI) treating first incident DP, LTSA and unemployment as competing risks were modeled.

Results

During follow-up, 21 DP, 1619 LTSA, and 808 unemployment events took place. Compared to those without, those with at least one benefit had a higher risk for DP (HR 5.03; 95%CI 1.80, 14.01), LTSA (1.67; 1.50, 1.84) and unemployment (1.24; 1.03, 1.50). The cumulative incidence for DP was very low, < 1%, for LTSA 80% with any previous social benefits vs. 60% without, and for unemployment ≤ 5%.

Conclusion

Social benefits received during the preceding year of SA due to mental diagnoses (< 90 days) predict DP, LTSA, and unemployment. Hence, previous social benefits may provide means for early identification of persons at risk for exit from labor market.

Socioeconomic factors in disability retirement due to mental disorders in Finland

Background

Previous research has identified low socioeconomic status (SES) as an epidemiological risk factor for early retirement and disability pension (DP) due to mental disorders. This study aims to examine these associations in greater detail, with separate consideration of the risk factors for mood disorders (F30–39) and non-affective psychotic disorder (F20–29) DP.

Methods

In this case–control setting the subjects (N = 36 879) were all those granted DP due to a mental disorder for the first time between 2010 and 2015 in Finland. All the subjects were matched with three controls for their gender, age and hospital district (N = 94 388). Three measures of dimensions of SES were used: education, income and occupational status, as well as family type as a control factor. Differences between DP recipients and controls, and between diagnostic groups, were studied using calculated characteristics and conditional logistic regression models.

Results

DP recipients often lived alone and had low educational and income levels. These characteristics were more prominent in non-affective psychotic disorder than in mood disorder DP. In white-collar occupational groups, the risk of DP was greater compared with blue-collar workers. Students were associated with the highest level of risk for all mental and mood disorder DPs.

Conclusions

We found evidence of SES factors associating with mental disorder-related severe loss of working and studying ability in a disorder-specific way. Notably, white-collar workers had an increased risk of mental disorder DP. This could be related to the psychosocially demanding contemporary working life in non-manual work.

Soft Skills wanted?! – (Arbeits)Fähigkeiten und Fähigkeitsanforderungen am Arbeitsplatz beschreiben mit dem Fähigkeitsrating Mini-ICF-APP

Dieser Beitrag der Zeitschrift Gruppe. Interaktion. Organisation. (GIO) informiert über ein etabliertes Standardkonzept zur fähigkeitsorientierten Arbeitsanforderungs- und Arbeitsfähigkeitsbeschreibung, welches sich im Rahmen der Arbeitsfähigkeitsbegutachtung bewährt hat. Es beschreibt die Fremd- und Selbstbeschreibung psychischer Fähigkeiten sowie die psychischen Arbeitsanforderungen.

Arbeitsplatz- und Aufgabenzuweisungen und auch betriebliche Wiedereingliederungen von Mitarbeitenden mit (chronischen) Gesundheitsbeeinträchtigungen erfordern Kenntnisse über die (Arbeits‑)Fähigkeiten von Mitarbeitenden. Bei psychischen Arbeitsanforderungen ist es notwendig, das psychische Fähigkeitsprofil Mitarbeitender zu kennen und mit den Anforderungen abzugleichen.

Das Mini-ICF Rating für Aktivitäts- und Partizipationsstörungen bei psychischen Störungen (Mini-ICF-APP) ist ein international validiertes und in der Arbeitsfähigkeitsbeschreibung und Sozialmedizin etabliertes Assessment zur Beschreibung von Fähigkeitsniveaus und -profilen auf 13 psychischen Fähigkeitsdimensionen. Es wird in Leitlinien (AWMF, DRV, SGPP) zur Verwendung empfohlen. Die 13 Fähigkeitsdimensionen ermöglichen einen Abgleich des Fähigkeitsprofils der Person mit dem Anforderungsprofil des Arbeitsplatzes. Die zu beurteilenden Fähigkeitsdimensionen sind (1) Fähigkeit zur Anpassung an Regeln und Routinen, (2) Fähigkeit zur Planung und Strukturierung von Aufgaben, (3) Flexibilität und Umstellungsfähigkeit, (4) Kompetenz- und Wissensanwendung, (5) Entscheidungs- und Urteilsfähigkeit, (6) Proaktivität und Spontanaktivitäten, (7) Widerstands- und Durchhaltefähigkeit, (8) Selbstbehauptungsfähigkeit, (9) Konversation und Kontaktfähigkeit zu Dritten, (10) Gruppenfähigkeit, (11) Fähigkeit zu engen dyadischen Beziehungen, (12) Fähigkeit zur Selbstpflege und Selbstversorgung, und (13) Mobilität und Verkehrsfähigkeit.

Neben dem Fähigkeiten-Fremdrating sind weitere Instrumentenversionen auf Basis dieses Fähigkeitskonzepts entstanden: eine Fähigkeiten-Selbstratingversion (Mini-ICF-APP-S), und eine Version zur fähigkeitsorientierten Arbeitsplatzbeschreibung (Mini-ICF-APP-W) für die Herstellung passender Arbeitsplätze im Sinne des Arbeitsschutzgesetzes (§ 5 ArbSchG) (Muschalla 2020).

Long-term outcomes of Prompt Mental Health Care: A randomized controlled trial

Prompt Mental Health Care (PMHC, Norwegian adaptation of Improving Access to Psychological Therapies) is found successful in alleviating symptoms of anxiety and depression. Here, we investigate whether improvement is maintained over time. A randomized controlled trial was conducted in two PMHC sites from November 2015 to August 2017, randomly assigning 681 adults with anxiety and/or mild to moderate depression (70:30 ratio: PMHC n = 463, TAU n = 218). Main outcomes were recovery rates and changes in symptoms of depression and anxiety from baseline to 12 months. Secondary outcomes were functional status, health-related quality of life, mental wellbeing and work participation. At 12 months after baseline the reliable recovery rate was 59.4% in PMHC and 36.6% in TAU, giving a between-group effect size of 0.51 (95%CI: 0.26, 0.77, p < 0.001). Differences in symptom change gave between-group effect sizes of -0.67 (95%CI: -0.99, -0.36, p < 0.001) for depression and -0.58 (95%CI: -0.91, -0.26, p < 0.001) for anxiety. PMHC was also at 12 months found more effective in improving functional status, health-related quality of life and mental wellbeing, but not work participation. In sum, substantial treatment effects of PMHC remain at 12 months follow-up, although results should be interpreted with caution due to risk of attrition bias.

Risk and risk factors for disability pension among patients with treatment resistant depression- a matched cohort study

BACKGROUND

Treatment resistant depression (TRD) is common among patients with depression, and is associated with clinical and functional disability. However, the risk and risk factors for being granted disability pension (DP) among patients with TRD have not been investigated.

METHODS

All antidepressant initiators in Sweden with a diagnosis of depression in specialized care were identified in nationwide registers 2006-2013 and followed regarding treatment trials. TRD was defined as the start of a third sequential trial. Patients with TRD who were not on DP (N = 3204) were matched by age, sex, history of depression, calendar year, and time for treatment start with 3204 comparators with depression and ongoing antidepressant treatment. A proportional Cox Regression was performed with DP as outcome, adjusted for various sociodemographic and clinical covariates.

RESULTS

Compared to the comparison cohort, TRD was associated with a doubled risk for all-cause DP (aHR 2.07; 95%CI 1.83-2.35), DP due to depression (2.28; 1.82-2.85) and to any mental disorder (2.24; 1.95-2.57) but not due to somatic diagnoses (1.25; 0.84-1.86). Among significant risk factors for DP in TRD were female sex, being > 29 years of age, unemployment and a diagnosis of comorbid personality disorder (ICD-10 codes F60.0-9).

CONCLUSION

TRD is associated with an elevated risk for DP compared to other patients with depression, with large potential costs for the affected patients and for society. Clinical and therapeutic implications for patients with TRD who are granted DP should be further investigated.

LIMITATION

No clinical data, e.g. type of depression or reason for treatment switch, was available for this study.

Twelve Months Post-treatment Results From the Norwegian Version of Improving Access to Psychological Therapies

Objectives

Prompt Mental Health Care (PMHC) is the Norwegian version of the England’s Improving Access to Psychological Therapies (IAPT). Both programs have been associated with substantial symptom reductions from pre- to post-treatment. The present study extends these findings by investigating symptom levels at 12 months post-treatment, as well as treatment outcome in relation to low- vs. high-intensity treatment forms.

Design and Outcome Measures

A prospective cohort design was used. All participants (n = 1530) were asked to complete the Patient Health Questionnaire-9 (PHQ-9) and the Generalized Anxiety Disorder-7 questionnaire (GAD-7) at baseline, before each session during treatment, at final treatment, and at 12 months post-treatment. Cohen’s d was used as effect size measure. Sensitivity analyses were conducted to examine the impact of the high missing data rates at post-treatment (≈44%) and 12 months post-treatment (≈58%).

Results

A large symptom reduction was seen from baseline to 12 months post-treatment for both PHQ (d = −0.98) and GAD (d = −0.94). Improvements observed at post-treatment were largely maintained at 12 months post-treatment (PHQ (Δd = 0.10) and GAD (Δd = 0.09). Recovery rates decreased only slightly from 49.5% at post-treatment to 45.0% at follow-up. Both low- and high-intensity treatment forms were associated with substantial and lasting symptoms reductions (−1.26 ≤ d ≤ −0.73). Sensitivity analyses did not substantially alter the main results.

Conclusion

The findings suggest long-lasting effects of the PMHC program and encourage the use of low-intensity treatment forms in PMHC like settings.

Assessment of Capacity Impairment in Patients with Mental Disorders by Routine Clinical Assessment and by Structured Assessment with the Mini-ICF-APP

BACKGROUND

Physicians and therapists are also consulted to give judgments on working ability. Ability to work cannot simply be derived from the patient's symptom status but from the illness-related capacity impairments in relation to the work demands. A structured assessment of capacity impairments has been evaluated and applied internationally: the Mini-ICF-APP Social Functioning Scale. It is currently unclear whether a free-text clinical report (i.e., usual clinical practice: clinical exploration according to clinical standards, but without a standardized documentation form, instead a text is written) and a structured capacity assessment correspond to the overall work ability judgment, i.e., the decision whether a patient is "fit for work" or "unfit for work."

OBJECTIVES

This investigation assessed, for the first time, whether usual clinical judgment and the additional structured capacity rating support the work ability decision.

METHODS

A total of 100 medical reports from patients in a psychotherapy hospital were excerpted for psychopathological symptoms and capacity disorders using a checklist. Additionally, a structured assessment of capacity disorders was documented on the Mini-ICF-APP rating for all patients.

RESULTS

In the free-text clinical medical report, endurance, flexibility, and contacts to others were the things mainly reported as impaired. This was similar to the structured Mini-ICF-APP rating. However, other capacity impairments were also reported in the Mini-ICF-APP, i.e., adherence to rules and regulations, planning and structuring, assertiveness, and group integration. When the free-text clinical report and the structured Mini-ICF-APP rating were compared, there was a higher rate of stated impairments covering all capacity dimensions in the Mini-ICF-APP rating.

CONCLUSIONS

The free-text report in the medical report shows the differences between patients who are fit for work and those who are not, and thus speak for the validity of work ability decisions. However, optimization is possible in terms of depth and differentiation of capacity impairment description by adhering to the standard set by the Mini-ICF-APP.

Work Disability Trajectories Among Individuals with a Sick-Leave Spell Due to Depressive Episode ≥ 21 Days: A Prospective Cohort Study with 13-Month Follow Up

Background Despite the increasing pattern of sick leave associated with depression in western countries, little is known about future work disability patterns among such sickness absentees. Aim To identify work disability (sick leave and disability pension) trajectories after the 21st day of a sick-leave spell due to depressive episode, and to investigate sociodemographic and morbidity characteristics of individuals in different trajectory groups. Methods This is a prospective cohort study using Swedish nationwide register data. We studied future work disability days (mean net days of sick leave and disability pension per month) among all individuals with a new sick-leave spell due to depressive episode (ICD-10 F32) ≥ 21 days during the first 6 months of 2010 (n = 10,327). Using group-based trajectory modeling, we identified work disability trajectories for the following 13 months. BIC value, group sizes, and average group probability were used to determine number of trajectories. Sociodemographic and morbidity characteristics were compared by χ² tests. Results We identified six trajectories of work disability: "decrease to 0 after 4 months" (43% of the cohort); "decrease to 0 after 9 months" (22%); "constant high" (11%); "decrease, then high increase" (9%); "slow decrease" (9%); and "decrease, then low increase" (6%). Those in the groups "constant high" and "decrease then high increase" were older and had the highest proportion with sick leave the year before. Conclusion A majority of the cohort (65%) had no work disability by the end of follow up. Sociodemographic and morbidity characteristics differed between trajectory groups among people on sick leave due to a depressive episode.

Sickness absence as a predictor of disability retirement in different occupational classes: a register-based study of a working-age cohort in Finland in 2007-2014

OBJECTIVES

The objective of the study was to examine diagnosis-specific sickness absences of different lengths as predictors of disability retirement in different occupational classes.

DESIGN

Register-based prospective cohort study up to 8 years of follow-up.

PARTICIPANTS

A 70% random sample of the non-retired Finnish population aged 25-62 at the end of 2006 was included (n=1 727 644) and linked to data on sickness absences in 2005 and data on disability retirement in 2007-2014.

MAIN OUTCOME MEASURES

Cox proportional hazards regression was utilised to analyse the association of sickness absence with the risk of all-cause disability retirement during an 8-year follow-up.

RESULTS

The risk of disability retirement increased with increasing lengths of sickness absence in all occupational classes. A long sickness absence was a particularly strong predictor of disability retirement in upper non-manual employees as among those with over 180 sickness absence days the HR was 9.19 (95% CI 7.40 to 11.40), but in manual employees the HR was 3.51 (95% CI 3.23 to 3.81) in men. Among women, the corresponding HRs were 7.26 (95% CI 6.16 to 8.57) and 3.94 (95% CI 3.60 to 4.30), respectively. Adjusting for the diagnosis of sickness absence partly attenuated the association between the length of sickness absence and the risk of disability retirement in all employed groups.

CONCLUSIONS

A long sickness absence is a strong predictor of disability retirement in all occupational classes. Preventing the accumulation of sickness absence days and designing more efficient policies for different occupational classes may be crucial to reduce the number of transitions to early retirement due to disability.

Work Ability Impairment and Facets of Workplace Perception Are Predictive of Sick Leave Duration in Persons With Work Anxiety

Abstract. Individuals with work anxiety are at risk for long-term sick leave and create high costs for society, companies, and their own work biography. Understanding psychological return-to-work predictors is important for early reintegration of these persons into the work context. This longitudinal study for the first time investigates the predictive value of workplace perception and objective work ability impairment for future sick leave duration in persons with work anxiety. The investigation was carried out with 103 individuals with work anxieties. They were of working age and confronted with a return-to-work situation after somatic illness. Work ability impairment was assessed in a structured interview by a state-licensed sociomedical specialist using the established Mini-ICF-APP Scale. Participants completed a questionnaire on their workplace perception (KFZA). The degree of work ability impairment (Mini-ICF-APP) was predictive of longer sick leave as well as workplace perception (KFZA dimensions scope of action, social support, need for cooperation). Training and return-to-work support in persons with work anxiety should focus on both work ability impairment and on workplace perception.

External Validation and Update of a Prediction Rule for the Duration of Sickness Absence Due to Common Mental Disorders

Purpose The objective of the present study was to validate an existing prediction rule (including age, education, depressive/anxiety symptoms, and recovery expectations) for predictions of the duration of sickness absence due to common mental disorders (CMDs) and investigate the added value of work-related factors. Methods A prospective cohort study including 596 employees who reported sick with CMDs in the period from September 2013 to April 2014. Work-related factors were measured at baseline with the Questionnaire on the Experience and Evaluation of Work. During 1-year follow-up, sickness absence data were retrieved from an occupational health register. The outcome variables of the study were sickness absence (no = 0, yes = 1) at 3 and 6 months after reporting sick with CMDs. Discrimination between workers with and without sickness absence was investigated at 3 and 6 months with the area under the receiver operating characteristic curve (AUC). Results A total of 220 (37 %) employees agreed to participate and 211 (35 %) had complete data for analysis. Discrimination was poor with AUC = 0.69 and AUC = 0.55 at 3 and 6 months, respectively. When 'variety in work' was added as predictor variable, discrimination between employees with and without CMD sickness absence improved to AUC = 0.74 (at 3 months) and AUC = 0.62 (at 6 months). Conclusions The original prediction rule poorly predicted CMD sickness absence duration. After adding 'variety in work', the prediction rule discriminated between employees with and without CMD sickness absence 3 months after reporting sick. This new prediction rule remains to be validated in other populations.

GP consultations for common mental disorders and subsequent sickness certification: register-based study of the employed population in Norway

BACKGROUND

Challenges related to work are in focus when employed people with common mental disorders (CMDs) consult their GPs. Many become sickness certified and remain on sick leave over time.

OBJECTIVES

To investigate the frequency of new CMD episodes among employed patients in Norwegian general practice and subsequent sickness certification.

METHODS

Using a national claims register, employed persons with a new episode of CMD were included. Sickness certification, sick leave over 16 days and length of absences were identified. Patient- and GP-related predictors for the different outcomes were assessed by means of logistic regression.

RESULTS

During 1 year 2.6% of employed men and 4.2% of employed women consulted their GP with a new episode of CMD. Forty-five percent were sickness certified, and 24 percent were absent over 16 days. Thirty-eight percent had depression and 19% acute stress reaction, which carried the highest risk for initial sickness certification, 75%, though not for prolonged absence. Men and older patients had lower risk for sickness certification, but higher risk for long-term absence.

CONCLUSION

Better knowledge of factors at the workplace detrimental to mental health, and better treatment for depression and stress reactions might contribute to timely return of sickness absentees.

Patient characteristics in a return to work programme for common mental disorders: a cross-sectional study

Background

Mental health problems are a growing cause of sickness absence. There are programmes in many countries to facilitate return to work (RTW) after sickness absence. In Norway, there has been some controversy about patients on sick-leave being prioritized over other patient groups, such as those with more severe diagnoses. However, it is not clear whether patients in RTW programmes actually do differ from patients in regular services.

Methods

This study compared 270 patients treated in an RTW outpatient clinic and 86 patients treated in a regular outpatient clinic, both in specialized mental health care, on patient characteristics, history of treatment and mental health status. Analyses of differences between groups were done by ANOVA tests, chi-square test and logistic regression.

Results

Patients in the RTW clinic had lower scores on the Clinical Outcomes in Routine Evaluation Outcome Measure (CORE-OM). There was no difference in health-related quality of life. RTW patients were somewhat older and more likely to live in relationships and have children, and they had higher incomes. Work participation, previous psychiatric hospitalization and present diagnosis contributed uniquely to an explanation of which patients were included in the respective clinics. The RTW clinic seems to reach its intended target group. Almost all of the patients in this group participated in the work arena, and their psychopathologies were clearly dominated by common mental disorders. Most RTW patients’ general practitioners had followed them fairly closely in the year before referral, suggesting previous attempts at treatment in primary care settings.

Conclusions

Relative to outpatients in a specialized mental health care setting, RTW patients had lower symptoms, but still in the same moderate range of severity. They suffered the same reduction in quality of life. Almost all of the RTW patients were diagnosed with illnesses that can be treated effectively, about half of them had recurring mental health problems and many of them had been treated in primary care settings before referral. These findings indicate that this group has significant health problems that can benefit from treatment in specialized health care settings.

Sickness allowance trajectories preceding disability retirement: a register-based retrospective study

OBJECTIVES

To identify subgroups of disability retirees with different pre-retirement sickness allowance histories and to examine whether the diagnosis of disability pension and socio-demographic variables discriminate these subgroups.

METHODS

The data included all Finnish residents aged 30-64 years who were granted a full disability pension in 2011 (N = 17 208). Sickness allowance trajectories during the preceding 10 years were searched using latent trajectory analysis. Multinomial logistic regression analysis was used to explore determinants of the trajectories.

RESULTS

Six distinct sickness allowance trajectories were identified. Four large subgroups with a long sickness allowance period during the final pre-retirement year were found, characterized by increasing (29% of retirees), early high (21%), stable low (24%) or stable high (16%) sickness allowance histories. In addition, two small subgroups (6 and 4%) with only a little sickness allowance during the final year were identified. The diagnosis of disability pension strongly influenced assignment to the trajectory groups. Women were more likely to have followed the stable high or the early high sickness allowance trajectory. Older age strongly increased but being a lower non-manual employee or self-employed decreased the probability of belonging to the two small trajectory groups. Long-term unemployment slightly increased belonging to the stable low trajectory and was strongly associated with the small subgroups with little or no sickness allowance during the final year preceding retirement.

CONCLUSIONS

Different pre-retirement sickness allowance trajectories can be found. Assignment to the trajectories differed by the diagnosis of disability pension but associations with socio-demographic variables were weak.

Return to work outcomes for workers with mental health conditions: A retrospective cohort study

OBJECTIVES

The aims of this study were to describe predictors of sustained return to work (RTW) among a cohort of workers with compensated work-related mental health conditions (MHCs); and to examine predictors of subsequent absences due to the same condition.

METHODS

This study was a retrospective analysis of compensation claims data in Victoria, Australia. We selected workers with an accepted wage replacement claim due to a work-related MHC from 1 January 2002 to 31 December 2009, with two years of follow-up data.

RESULTS

We identified 8358 workers meeting our inclusion criteria. The median age of workers was 44 years (Interquartile range (IQR): 36-51) and 56% were female. In a multivariable Cox regression analysis, older age, being from a small organisation, working in some specific industry segments, consulting a psychiatrist or psychologist, using medications, and having a previous claim were all associated with a delayed RTW. Workers experiencing work pressure, assault/workplace violence or other mental stress factors, working in the public administration and safety industry and having a medical incapacity certification between 3-4 days and 5-7 days had a higher rate of multiple RTW attempts.

CONCLUSION

This study identified a number of risk factors associated with a delayed RTW and multiple attempts at RTW. Predictors may help identify high-risk groups and facilitate the RTW process of workers with MHCs.

Time to recurrence of mental health-related absence from work

BACKGROUND

It is unclear when occupational health providers should re-evaluate workers after mental health-related absences from work.

AIMS

To investigate the time to recurrence of mental health-related absences, stratified by International Classification of Diseases-Tenth Revision (ICD-10) diagnostic categories.

METHODS

A 10-year observational study of workers employed at a steel mill. Sickness absence data were retrieved from an occupational health register. Mental health-related absences were defined as absence due to emotional disturbance or mental and behavioural disorders. The first mental health-related absence since baseline was called the index episode. Recurrences were defined as mental health-related absences occurring >28 days after recovery from the index episode. The frequency of recurrent mental health-related absence was assessed by the recurrence density (RD) per 1000 person-years. The time to recurrent mental health-related absence was investigated by Kaplan-Meier survival analysis.

RESULTS

Of 15461 workers, 391 had recurrent mental health-related absences. RD was 30.5, 34.3, 29.9 and 37.7 per 1000 person-years after index episodes due to emotional disturbance, mood disorders, neurotic disorders and other psychiatric disorders, respectively. RDs did not differ across ICD-10 diagnostic categories. The median time to recurrent mental health-related absence was 15.2 months [95% confidence interval (CI) 12.6-17.7] and was shortest for mood disorders (5.2, 95% CI 1.4-8.9 months) and specific psychiatric disorders (5.3, 95% CI 1.0-13.1 months).

CONCLUSIONS

Based on this observational study, we suggest that occupational and primary health care providers consider reviewing the mental health status of workers 6 months after recovery from mental health-related absence.

Depressive symptoms and early retirement intentions among Danish eldercare workers: Cross-sectional and longitudinal analyses

Background

Depression increases the risk of disability pension and represents a health related strain that pushes people out of the labour market. Although early voluntary retirement is an important alternative to disability pension, few studies have examined whether depressive symptoms incur early voluntary retirement. This study examined whether depressive symptoms and changes in depressive symptoms over time were associated with early retirement intentions.

Methods

We used a cross-sectional (n = 4041) and a prospective (n = 2444) population from a longitudinal study on employees of the Danish eldercare sector. Depressive symptoms were measured by the Major Depression Inventory and the impact of different levels of depressive symptoms (severe, moderately severe, moderate, mild and none) and changes in depressive symptoms (worsened, improved, unaffected) on early retirement intentions were analysed with multinomial logistic regression.

Results

In the cross-sectional analysis all levels of depressive symptoms were significantly associated with retirement intentions before the age of 62 years. Similar associations were found prospectively. Depressive symptoms and worsened depressive symptoms in the two year period from baseline to follow-up were also significantly associated with early retirement intentions before age 62. The prospective associations lost statistical significance when controlling for early retirement intentions at baseline.

Conclusions

The whole spectrum of depressive symptoms represents a health related strain that can incur intentions to retire early by early voluntary retirement. In order to change the intentions to retire early, the work related consequences of depressive symptoms should be addressed as early in the treatment process as possible.

Sick-leave measures, socio-demographic factors and health care as risk indicators for suicidal behavior in patients with depressive disorders--a nationwide prospective cohort study in Sweden

BACKGROUND

Studies based on large data sets investigating a wide range of risk indicators on suicidal behavior in patients with depressive disorders are sparse. This study aimed to examine the association of sick-leave measured in different ways on one hand and socio-demographics, medication, and health care on the other hand with suicide attempt and suicide among patients with depressive disorders.

METHODS

This is a population-based prospective cohort study using nationwide register data. All individuals who lived in Sweden 31.12.2004, then aged 16-64 years, and had psychiatric in- or out-patient care due to depressive disorders in 2005 were included (N = 21,096). Univariate and multivariate hazard ratios (HR) and 95% Confidence Intervals (CI) with regard to suicide attempt and suicide during 2006-2010 were estimated by Cox regression.

RESULTS

Those with new sick-leave spells, full-time spells, spells due to mental diagnoses and exceeding one year and those having ≥ 1 sick-leave spells had a higher risk of suicide attempt. Female sex, young age, lower education, living alone, prescription of antidepressants and anxiolytics, inpatient health care, and suicide attempts resulted in higher HRs of suicide attempt in the multivariate analyses (range of HRs 1.17-3.28). Male sex, combined antidepressant and anxiolytic prescription, mental inpatient health care, and suicide attempts predicted subsequent suicide (range of HRs 1.84-3.33).

LIMITATIONS

Focus on specialized health care limited generalization.

CONCLUSIONS

Sickness absence, social-demographics, and medical determinants were associated with suicidal behavior. These risk indicators should be considered when monitoring individuals with depressive disorders and assessing suicide risk.

Sickness absence due to back pain or depressive episode and the risk of all-cause and diagnosis-specific disability pension: A Swedish cohort study of 4,823,069 individuals

BACKGROUND

The aim of this study was to investigate the associations between sickness absence due to back pain or depressive episode with future all-cause and diagnosis-specific disability pension, while adjusting for comorbidity and socio-demographics, for all and stratifying for sex.

METHOD

In total, 4,823,069 individuals aged 16-64 years, living in Sweden at the end of 2004, not on old-age or disability pension in 2005 and without ongoing sickness absence at the turn of 2004/2005 formed the study population. Crude and adjusted hazard ratios (HRs) for all-cause and diagnosis-specific disability pension (2006-2010) in relation to diagnosis-specific sickness absence with sickness benefits paid by the Social Insurance Agency were estimated using Cox regression.

RESULTS

The HR for all-cause disability pension was 7.52 (7.25-7.52) in individuals with an incident sick-leave spell due to back pain, compared to individuals without sickness absence in 2005 in the fully adjusted (socio-demographics and comorbidity) model. The fully adjusted (multivariate) HRs for diagnosis-specific disability pension were musculoskeletal diagnoses 23.87 (22.75-25.04), mental 2.49 (2.27-2.73) or all other diagnoses, 3.44 (3.17-3.75). In individuals with an incident sick-leave spell due to a depressive episode in 2005, the multivariate adjusted HR for all-cause disability pension was 12.87 (12.42-13.35), while the multivariate HRs for disability pension due to musculoskeletal diagnoses were 4.39 (3.89-4.96), for mental diagnoses 25.32 (24.29-26.38) and for all other somatic diagnoses 3.44 (3.09-3.82). Men who were sickness absent due to a depressive episode had a higher HR for disability pension compared to women.

CONCLUSION

Results indicate that sickness absence due to a depressive episode or back pain is a strong risk factor for a future disability pension due to mental, musculoskeletal or other somatic diagnoses.

Sickness absence at a young age and later sickness absence, disability pension, death, unemployment and income in native Swedes and immigrants

Background: Sickness absence with cash benefits from the sickness insurance gives an opportunity to be relieved from work without losing financial security. There are, however, downsides to taking sickness absence. Periods of sickness absence, even short ones, can increase the risk for future spells of sickness absence and unemployment. The sickness period may in itself have a detrimental effect on health. The aim of the study was to investigate if there is an association between exposure to sickness absence at a young age and later sickness absence, disability pension, death, unemployment and income from work. Methods: Our cohort consisted of all immigrants aged 21–25 years in Sweden in 1993 (N = 38 207) and a control group of native Swedes in the same age group (N = 225 977). We measured exposure to sickness absence in 1993 with a follow-up period of 15 years. We conducted separate analyses for men and women, and for immigrants and native Swedes. Results: Exposure to ≥60 days of sickness absence in 1993 increased the risk of sickness absence [hazard ratio (HR) 1.6–11.4], unemployment (HR 1.1–1.2), disability pension (HR 1.2–5.3) and death (HR 1.2–3.5). The income from work, during the follow-up period, among individuals with spells of sick leave for ≥60 days in 1993 was around two-thirds of that of the working population who did not take sick leave. Conclusions: Individuals on sickness absence had an increased risk for work absence, death and lower future income.

Personality disorders are important risk factors for disability pensioning

PURPOSE

To determine whether personality disorders (PDs) are associated with increased risk of disability pensioning in young adults, independent of other common mental disorders.

METHODS

2,770 young adults from the general population were assessed for PDs by the Structured Interview for DSM-IV Personality, and for common mental disorders by the Composite of International Diagnostic Interview. These data were linked to the Norwegian National Insurance Administration's recordings of disability benefits for a 10-year period. Logistic regression analyses were applied to investigate the association between PDs and disability pensioning. The analyses were conducted for three types of PD measures: categorical diagnoses (any PD), dimensional scores of individual PDs and higher order components retrieved by principal component analyses.

RESULTS

Having any PD was strongly associated with disability pensioning, regardless of disability diagnosis. The estimated odds ratio (OR) was substantially higher for PDs [OR 4.69 (95% confidence interval (CI) 2.6-8.5)] than for mood disorders [OR 1.3 (CI 0.7-2.3)] and anxiety disorders [OR 2.3 (CI 1.3-4.3)]. Measured dimensionally, all PD traits except antisocial traits were significantly associated with disability pensioning. After adjusting for co-occurring traits of other PDs, only schizoid, dependent and borderline PD traits showed a significant positive association with disability pension, while antisocial traits showed a significant negative association. The principal component analyses showed that negative affectivity, psychoticism, and detachment was associated with an increased risk of disability pensioning, while antagonism/disinhibition and obsessivity were not.

CONCLUSIONS

PDs are strongly associated with disability pensioning in young adults, and might be more important predictors of work disability than anxiety and depressive disorders. Certain aspects of pathologic personalities are particularly important predictors of disability.

Trends in sickness certification of injured workers by general practitioners in Victoria, Australia

BACKGROUND

General practitioners (GPs) play a critical role in facilitating injured workers return to work via their ability to certify capacity to return to employment. However, little is known about the sickness certification patterns of GPs in the context of workers' compensation claims.

AIM

To determine if GPs' sickness certification behaviour has changed between 2003 and 2010 in Victoria, Australia.

METHOD

Retrospective population-based cohort study of all injured workers with an accepted compensation claim. Sickness certification rates per 1,000 working population per annum were calculated. General regression models adjusted for workers' age and annual claim number were fitted to summarize changes in count and duration (expressed as incidence rate ratios or IRRs) of unfit for work (UFW) versus alternate duties (ALT) certificates within six categories of work-related injury and disease.

RESULTS

92,134 UFW and 28,293 ALT certificates were identified. A significant decrease in the unadjusted annual certification rates per 1,000 working population was observed. However, after adjusting for the annual number of claims and age, the IRRs of certificates increased over time. The rate of injuries and IRRs of certificates varied across affliction categories, IRRs being higher in mental health conditions in women than in men (IRR: 0.40, 95 % CI 0.38-0.41 vs. IRR: 0.17, 95 % CI 0.16-0.18). The duration of certificates remained stable, with the ALT being longer than UFW certificates in all claimants.

CONCLUSION

Our findings indicate that GPs in Victoria issue an increasing number of UFW sickness certificates each year. Further research is required to investigate the reasons for such practises.

Risk markers of all-cause and diagnosis-specific disability pension--a prospective cohort study of individuals sickness absent due to stress-related mental disorders

Background

Stress-related mental disorders rank among the leading causes of sickness absence in several European countries. The aim of this study was to investigate predictors of all-cause and diagnosis-specific disability pension in sickness absentees with stress-related mental disorders.

Methods

A cohort of 36304 non-retired individuals aged 16–64 years at 31.12.2004 with at-least one sickness absence spell due to stress-related mental disorders (SRMD) initiated in 2005 in Sweden was followed-up with regard to disability pension (2006–2010) by linkage of registers. Uni- and multivariate Hazard ratios (HR) with 95% Confidence Intervals, CI, were estimated using Cox regression for several risk markers.

Results

During the follow-up period, 2735 individuals (7.5%) were granted a disability pension, predominantly due to mental diagnoses (n = 2004, 73.3%). In the multivariate analyses, female sex, age exceeding 35 years, low educational level, being born in a country outside EU25 and Northern Europe, residing outside big cities, living alone, having had a long duration of the first spell due to SRMD (>90 days); mental disorders necessitating frequent specialised health care as well as comorbid somatic disorders were found to be predictive of granting disability pension. Some different patterns emerged for risk factors related to diagnosis-specific disability pension and for younger and older individuals.

Conclusions

Several predictors could be identified as risk markers for disability pension. The variation in the effect of risk markers with regard to age and diagnosis of disability pension speaks in favour of the importance of a person-centered approach in treatment and rehabilitation.

Fatigue as prognostic risk marker of mental sickness absence in white collar employees

PURPOSE

To investigate fatigue as prognostic risk marker for identifying working employees at risk of long-term sickness absence (SA).

METHODS

At baseline, fatigue was measured in 633 white collar employees with the checklist individual strength (CIS) including scales for fatigue severity, reduced concentration, reduced motivation, and reduced physical activity. SA was medically certified by an occupational physician in the 3rd or 4th SA week with diagnostic codes according to the 10th version of the International Classification of Diseases. Medically certified SA was retrieved at the individual level from an occupational health register after 1-year follow-up. CIS scores were investigated as prognostic risk markers predicting medically certified SA and particularly SA certified as mental SA.

RESULTS

614 employees (N = 378 men and N = 236 women) had complete data and were eligible for analysis; 63 (10 %) had medically certified SA of whom 39 (6 %) had mental SA. Fatigue severity and total CIS scores were associated with medically certified SA in men, but poorly discriminated between men with and without medically certified SA. Fatigue severity, reduced concentration, reduced motivation, and total CIS scores were also associated with mental SA in men. CIS and its reduced concentration scale were valid prognostic risk markers of mental SA. CONCLUSION Fatigue was a prognostic risk marker of mental SA in white collar men. The CIS should be further validated as a screening tool for the risk of mental SA in white collar working populations.

Are all-cause and diagnosis-specific sickness absence, and sick-leave duration risk indicators for suicidal behaviour? A nationwide register-based cohort study of 4.9 million inhabitants of Sweden

OBJECTIVES

Recent studies have found an increased risk of suicide in people on sickness absence, but less is known about to what extent diagnosis-specific sickness absence is a risk indicator for suicidal behaviour. This study aimed to examine all-cause and diagnosis-specific sickness absence and sick-leave duration as risk indicators for suicide attempt and suicide.

METHODS

This is a population-based prospective cohort study. All non-retired adults (n = 4 923 404) who lived in Sweden as on 31 December 2004 were followed-up for 6 years regarding suicide attempt and suicide (2005-2010). HRs and 95% CIs for suicidal behaviour were calculated, using people with no sick-leave spells in 2005 as reference.

RESULTS

In analyses adjusted for sociodemographic factors and previous mental healthcare, suicide attempt and current antidepressants prescription, sickness absence predicted suicide attempt (HR 2.37; 95% CI 2.25 to 2.50 for women; HR 2.69; 95% CI 2.53 to 2.86 for men) and suicide (HR 1.91; 95% CI 1.60 to 2.29 for women; HR 1.92; 95% CI 1.71 to 2.14 for men), particularly mental sickness absence (range of HR: 2.74-3.64). The risks were also increased for somatic sickness absence, for example, musculoskeletal and digestive diseases and injury/poisoning (range of HR: 1.57-3.77). Moreover, the risks increased with sick-leave duration.

CONCLUSIONS

Sickness absence was a clear risk indicator for suicidal behaviour, irrespective of sick-leave diagnoses, among women and men. Awareness of such risks is recommended when monitoring sickness certification. Further studies are warranted in order to gain more detailed knowledge on these associations.

Can use of healthcare services among 15-16-year-olds predict an increased level of high school dropout? A longitudinal community study

OBJECTIVES

To study associations between healthcare seeking in 15-16-year-olds and high school dropout 5 years later.

DESIGN

Longitudinal community study.

SETTING

Data from a comprehensive youth health survey conducted in 2000-2004, linked to data from national registries up to 2010.

PARTICIPANTS

13 964 10th grade secondary school students in six Norwegian counties.

MAIN OUTCOME MEASURE

Logistic regression was used to compute ORs for high school dropout.

RESULTS

The total proportion of students not completing high school 5 years after registering was 29% (girls 24%, boys 34%). Frequent attenders to school health services and youth health clinics at age 15-16 years had a higher dropout rate (37/48% and 45/71%), compared with those with no or moderate use. Adolescents referred to mental health services were also more likely to drop out (47/62%). Boys with moderate use of a general practitioner (GP) had a lower dropout rate (30%). A multiple logistic regression analysis, in which we adjusted for selected health indicators and sociodemographic background variables, revealed that seeking help from the youth health clinic and consulting mental health services, were associated with increased level of high school dropout 5 years later. Frequent attenders (≥4 contacts) had the highest odds of dropping out. Yet, boys who saw a GP and girls attending the school health services regularly over the previous year were less likely than their peers to drop out from high school.

CONCLUSIONS

Adolescents who seek help at certain healthcare services can be at risk of dropping out of high school later. Health workers should pay particular attention to frequent attenders and offer follow-up when needed. However, boys who attended a GP regularly were more likely to continue to high school graduation, which may indicate a protective effect of having a regular and stable relationship with a GP.

"Inclusive working life in Norway": a registry-based five-year follow-up study

BACKGROUND

In 2001, the Norwegian authorities and major labour market partners signed an agreement regarding 'inclusive working life' (IW), whereby companies that participate are committed to reducing sickness absence. Our main aim was to determine the effect of the IW program and work characteristics by gender on long-term (>8 weeks) sickness absence (LSA).

METHODS

Self-reported data on work characteristics from the Oslo Health Study were linked to registry-based data on IW status, education and LSA. From 2001-2005, 10,995 participants (5,706 women and 5,289 men) aged 30, 40, 45 and 60 years were followed. A Cox regression was used to compute hazard ratios (HR) for LSA risk. The cohort was divided into an IW group (2,733 women and 2,058 men) and non-IW group (2,973/3,231).

RESULTS

43.2% and 41.6% of women and 22.3%/24.3% of men (IW / non-IW, respectively) experienced at least one LSA. In a multivariate model, statistically significant risk factors for LSA were low education (stronger in men), shift work/night work or rotating hours (strongest in men in the non-IW group), and heavy physical work or work involving walking and lifting (men only and stronger in the non-IW group). Among men who engaged in shift work, the LSA risk was significantly lower in the IW group.

CONCLUSIONS

Our results could suggest that IW companies that employ many men in shift work have implemented relevant efforts for reducing sickness absence. However, this study could not demonstrate a significant effect of the IW program on the overall LSA risk.

Mental health symptoms as prognostic risk markers of all-cause and psychiatric sickness absence in office workers

BACKGROUND

To investigate mental health symptoms as prognostic risk markers of all-cause and psychiatric sickness absence (SA).

METHODS

Mental health symptoms were measured in 1137 office workers with the Four-Dimensional Symptom Questionnaire (4DSQ), including scales for distress, depression, anxiety and somatization. The total number of SA days was accumulated prospectively on the individual level and high SA was defined as ≥30 SA days during 1-year follow-up. Psychiatric SA was also tallied on the individual level during 1-year follow-up. Baseline 4DSQ scores were associated with high all-cause SA and psychiatric SA by logistic regression analysis. The Hosmer-Lemeshow test and calibration slope were used to assess the accuracy of predictions by 4DSQ scores. The ability of 4DSQ scores to discriminate high-risk from low-risk employees was estimated by the area under the receiver operating characteristic curve.

RESULTS

Six hundred thirty-three office workers (56%) participated in the study. All 4DSQ scales were prospectively associated with high all-cause SA and with psychiatric SA. Distress and somatization scores showed acceptable calibration, but failed to discriminate between office workers with and without high all-cause SA. The distress scale did show adequate calibration (calibration slope = 0.95) and discrimination (area under the receiver operating characteristic curve = 0.71) for psychiatric SA.

CONCLUSION

Distress was a valid prognostic risk marker for identifying office workers at work, but at risk of future psychiatric SA. Further research is necessary to investigate the prognostic performance of distress as risk marker of psychiatric SA in other working populations and to determine cut-off points for distress.

The transition between work, sickness absence and pension in a cohort of Danish colorectal cancer survivors

OBJECTIVES

The aim of this study was to evaluate the impact of socioeconomic and clinical factors on the transitions between work, sickness absence and retirement in a cohort of Danish colorectal cancer survivors.

DESIGN

Register-based cohort study with up to 10 years of follow-up.

SETTING

Population-based study with use of administrative health-related and socioeconomic registers.

PARTICIPANTS

All persons (N=4343) diagnosed with colorectal cancer in Denmark during the years 2001-2009 while they were in their working age (18-63 years) and who were part of the labour force 1 year postdiagnosis.

PRIMARY AND SECONDARY OUTCOME MEASURES

By the use of multistate models in Cox proportional hazards models, we analysed the HR for re-employment, sickness absence and retirement in models including clinical as well as health-related variables.

RESULTS

1 year after diagnosis, 62% were working and 58% continued until the end of follow-up. Socioeconomic factors were found to be associated with retirement but not with sickness absence and return to work. The risk for transition from work to sickness absence increased if the disease was diagnosed at a later stage (stage III) 1.52 (95% CI 1.21 to 1.91), not operated curatively 1.35 (95% CI 1.11 to 1.63) and with occurrence of postoperative complications 1.25 (95% CI 1.11 to 1.41). The opposite was found for the transition from sickness absence back to work.

CONCLUSIONS

This nationwide study of colorectal cancer patients who have survived 1 year shows that the stage of disease, general health condition of the individual, postoperative complications and the history of sickness absence and unemployment have an impact on the transition between work, sickness absence and disability pension. This leads to an increased focus on the rehabilitation process for the more vulnerable persons who have a combination of severe disease and a history of work-related problems with episodes outside the working market.

Influence of efforts of employer and employee on return-to-work process and outcomes

BACKGROUND

Research on disability and RTW outcome has led to significant advances in understanding these outcomes, however, limited studies focus on measuring the RTW process. After a prolonged period of sickness absence, the assessment of the RTW process by investigating RTW Effort Sufficiency (RTW-ES) is essential. However, little is known about factors influencing RTW-ES. Also, the correspondence in factors determining RTW-ES and RTW is unknown. The purpose of this study was to investigate 1) the strength and relevance of factors related to RTW-ES and RTW (no/partial RTW), and 2) the comparability of factors associated with RTW-ES and with RTW.

METHODS

During 4 months, all assessments of RTW-ES and RTW (no/partial RTW) among employees applying for disability benefits after 2 years of sickness absence, performed by labor experts at 3 Dutch Social Insurance Institute locations, were investigated by means of a questionnaire.

RESULTS

Questionnaires concerning 415 cases were available. Using multiple logistic regression analysis, the only factor related to RTW-ES is a good employer-employee relationship. Factors related to RTW (no/partial RTW) were found to be high education, no previous periods of complete disability and a good employer-employee relationship.

CONCLUSIONS

Different factors are relevant to RTW-ES and RTW, but the employer-employee relationship is relevant for both. Considering the importance of the assessment of RTW-ES after a prolonged period of sickness absence among employees who are not fully disabled, this knowledge is essential for the assessment of RTW-ES and the RTW process itself.

Common mental disorders and subsequent work disability: a population-based Health 2000 Study

BACKGROUND

Work disability due to common mental disorders has increased in Western countries during the past decade. The contribution of depressive, anxiety, and alcohol use disorders to all disability pensions at the population level is not known.

METHODS

Epidemiological health data from the Finnish Health 2000 Study, gathered in 2000-2001, was linked to the national register on disability pensions granted due to the ICD-10 diagnoses up to December 2007. Mental health at baseline was assessed using the Composite International Diagnostic Interview (CIDI). Sociodemographic, clinical, and work-related factors, health behaviors, and treatment setting were used as covariates in the logistic regression analyses among the 3164 participants aged 30-58 years.

RESULTS

Anxiety, depressive, and comorbid common mental disorders predicted disability pension when adjusted for sex and age. In the fully adjusted multivariate model, comorbid common mental disorders, as well as physical illnesses, age over 45 years, short education, high job strain, and previous long-term sickness absence predicted disability pension.

LIMITATIONS

The study population included persons aged 30 or over. Sub groups according to mental disorders were quite small which may have diminished statistical power in some sub groups. Baseline predictors were measured only once and the length of exposure could not be determined. The systems regarding financial compensation to employees differ between countries.

CONCLUSIONS

Comorbid mental disorders pose a high risk for disability pension. Other independent predictors of work disability include socio-demographic, clinical, work-related, and treatment factors, but not health behavior. More attention should be paid to work-related factors in order to prevent chronic work disability.

Sex differences in the disability associated with mental disorders

PURPOSE OF REVIEW

It is well established that women have a higher prevalence of depression and anxiety disorders, but sex differences in the disability associated with depression and anxiety disorders have been less well researched. Earlier studies suggested that women were more disabled by their depression than were men. Studies of schizophrenia, in contrast, have always found that men were more disabled. Recent studies cast new light on this topic and suggest that sex differences in the disability associated with mental disorders may be more consistent than previously thought.

RECENT FINDINGS

Two general population studies found that men (and boys) with depression or anxiety disorders (or symptoms) reported greater impairment in everyday functioning and social relationships than women with depression and anxiety. These findings are consistent with the research on psychotic disorders and with much of the research on sex differences in long-term sickness absence due to psychiatric disorder.

SUMMARY

Men experience more functional and social impairment in association with episodes of depression, anxiety, and psychosis than their female counterparts. The greater social isolation among men with mental disorders may be attributable to male reticence about disclosing emotional distress, limiting their access to support.

Disability, sickness, and unemployment benefits among long-term sickness absentees five years before, during, and after a multidisciplinary medical assessment

AIM

The aim was to describe how a multidisciplinary medical assessment changed the distribution of long-term sickness absentees between three different forms of social security support during a period of eleven years.

METHODS

The study group (n = 1002) consisted of persons on long-term sickness absence who were referred to a multidisciplinary medical assessment by the Social Insurance Office in Stockholm, Sweden between 1998 and 2007. Register data from the years 1993-2008 were linked to the study group. A calculation was provided for the number of days per person and year on unemployment benefits, sickness benefits, and disability pension, five years before, during, and five years after the assessment. Also, differences in the average number of days per person and year were calculated with one-way analysis of variance.

RESULTS

The number of days on sickness benefits increased up to the time of multidisciplinary medical assessment, from 69 to 218 days on average. After the assessment there was a decrease in the average number of days on sickness benefits, from 218 to 16 days. Before the assessment the number of days on disability pension was 21, but this increased after the assessment from 104 days to an average of 272 days five years after the assessment. There were age differences regarding number of compensated days, and these were particularly pronounced for disability days after the assessment. Further, there were significant differences between types of diagnosis in relation to average days on disability pension after the assessment.

CONCLUSION

The study shows that after a multidisciplinary medical assessment there is a rapid increase in disability pension and a dramatic decrease in sickness benefits. The results indicate that for a large number of persons, a Social Insurance Office referral to an assessment does not improve their chances of returning to work, but rather seems to justify disability pension.

[Modulating variables of work disability in depressive disorders]

OBJECTIVES

To describe the duration of sickness absence in unipolar depression and to determine the relationship of demographic, job-related and clinical variables with length of temporary work disability in depressive disorders.

METHODS

Prospective observational study. A total of 1,292 subjects with depressive disorder diagnosis (ICD-9-CM) were selected claiming sick leave in an Occupational Diseases and Accident sat Work Insurance Scheme (sampling on successive occasions). Descriptive analyses of sickness absence duration, and bivariate (median test) and multivariate analysis (logistic regression) were performed to find relationships between demographic, job-related and clinical variables.

RESULTS

Mean duration of sickness absence episodes due to a depressive disorder was 120 days. After multivariate analyses, female sex (p < 0.01), higher age (p < 0.01), lower educational level (p < 0.01), method of payment according to whether self-employed or unemployed workers (p < 0.01) and being referred to both psychiatrist and psychologist (p < 0.01) remained significantly associated with sick leave length.

CONCLUSIONS

These findings confirm a strong association of depression with long periods of work disability and high absenteeism, and also suggest the need for improvements in functional ability assessment and promotion, treatment and referral of depressed patients.

Predictors of return to work in employees sick-listed with mental health problems: findings from a longitudinal study

BACKGROUND

Sickness absence due to mental health problems (MHPs) is increasing in several European countries. However, little is known about return to work (RTW) for employees with MHPs. This prospective study aimed to identify predictors for RTW in employees sick-listed with MHPs.

METHODS

Employees were recruited when applying for sickness benefit due to MHPs from the Municipality of Copenhagen (n = 644). Information about age, gender, occupation, self-reported RTW expectancy, self-reported reason for absence and prior absence with MHPs was retrieved from application forms for sickness benefit. Each participant was followed-up in the National Register for Social Transfer Payments for a maximum period of 52 weeks to estimate time to RTW. Hazard ratios for RTW with 95% confidence intervals were calculated using Cox proportional regression analyses.

RESULTS

Employees sick-listed with self-reported stress/burnout returned to work faster than those with self-reported depression (HR = 0.76), and other MHPs (HR = 0.56). A positive RTW expectancy of the sick-listed person (HR = 1.27) and no prior absence with MHPs (HR = 1.29) were associated with a shorter time to RTW.

CONCLUSION

Sickness absence due to self-reported stress/burnout, a positive RTW expectancy and no prior absence with MHPs predicted a shorter time to RTW among Danish employees sick listed with MHPs. Findings could help social insurance officers and other rehabilitation professionals to identify groups at high risk for prolonged absence.

Return to work among employees with common mental disorders: Study design and baseline findings from a mixed-method follow-up study

Aims: Most research on return-to-work (RTW) has focused on musculoskeletal disorders. To study RTW in employees sick-listed with common mental disorders (CMD), e.g., stress, depression, and anxiety, the National Research Centre for the Working Environment initiated a study on ‘‘Common Mental Disorders, Return-to-work, and Long-term Sickness Absence’’ (CORSA). The aim of the study is (1) to identify predictors of RTW from the environmental, the individual, and the health-related domain and (2) to explore the RTW process based on study participants’ experiences. The purpose of this paper is to present the study design and the characteristics of the participants, including analyses on non-response and the prevalence of major depression. Methods: CORSA is a mixed-method follow-up study encompassing quantitative and qualitative analyses in a cohort of employees sick-listed with CMD. Participants were all employees who suffered from CMD and whose applications for sickness absence benefits were processed by the Job Centre Copenhagen (a subunit of the municipality) between July and December 2007 (n = 721). Data on predictors for RTW were collected from (1) administrative application forms filled out by all participants when applying for benefits (n = 721), and (2) baseline questionnaires sent to all participants (responders: n = 298). Data on RTW was retrieved from a national sickness absence registry and from 6-month follow-up questionnaires (n = 226). To explore the RTW process we will primarily use data from in-depth interviews with selected participants (n = 16) supplemented with data from the two questionnaires. Conclusions: The mixed method design allows for a more comprehensive understanding of RTW by triangulating qualitative and quantitative methods.

Compensating for non-response in a study estimating the incidence of mental disorders in long-term sickness absence by a two-phased design

Aims: The study compensates for the non-response that was observed in a previous study that estimated the frequencies of mental disorders in long-term sickness absence (LSA) (more than eight weeks of continuous sickness absence). In this study, the frequency of any mental disorder was estimated at 48% by a two-phase design and weighted logistic regression. The total non-response rate was 53.6%. This motivated the present study to compensate for non-response by applying adjustment of the weights and by multiple imputation of missing data in the estimation of the frequencies of mental disorders. Methods: The study took place in a Danish population of 120,000 inhabitants. During one year, all 2,414 incident individuals on LSA were identified. By a two-phase design 1,121 individuals were screened in Phase 1. In Phase 2, which was a subsample of Phase 1, 337 individuals participated in a psychiatric diagnostic examination applying Present State Examination as gold standard. The weighted analyses were based on scores of the screening instrument SCL-8AD compiled of SCL-8, SCL-ANX4, and SCL-DEP6 from the Common Mental Disorders Screening Questionnaire. In the present study, the variables sex, age, municipality, and social transfer income variables were used for the adjustment of weights in weighted analyses and in the imputation models. Results: The frequencies were: any mental disorder 46%—49%, depression 31%—36%, anxiety 13%—15%, and somatoform disorder 8%—9%. Conclusions: Irrespective of whether compensation for non-response was applied, the frequencies of mental disorders were similar. The variables used for the compensation were of problematic value.

Sickness absence with musculoskeletal or mental diagnoses, transition into disability pension and all-cause mortality: a 9-year prospective cohort study

AIMS

Increased early mortality indicates poor health. This study assessed mortality among men and women after long-term sickness absence (LTSA) with musculoskeletal or mental diagnoses. A special focus was on possible differences in mortality among women and men who obtained disability pension (DP) as compared to those who did not.

METHODS

This was a 9-year prospective cohort study in Hordaland County, Norway, including 1417 women and 1075 men aged 16-62 years with a spell of LTSA 48 weeks, and with a musculoskeletal or mental diagnosis. The endpoint was death from all causes. Age-standardised mortality rates for those who obtained DP and those who did not were calculated and compared. Cox proportional hazards analysis was used to assess DP status and other possible predictors of premature death. All analyses were stratified for gender.

RESULTS

Overall, 36% obtained a DP and 3.2% died. Among the men, 7.2% with mental diagnoses and 4.4% with musculoskeletal sick-leave diagnoses died. Among the women, 1.9% died in both groups. Among the men, 5.6% of the DP recipients died, as compared to 4.6% among those without DP. The respective figures for the women were 2.9% and 1.3%. Male gender, increasing age and low income among men increased the mortality risk significantly. After adjustments for these variables, the hazard ratios associated with DP were 2.9 (95% confidence interval (CI) 1.2-7.0) for women and 2.3 (95% CI 1.2-4.5) for men.

CONCLUSIONS

When monitoring those on LTSA, one should be aware of the high mortality among those who obtain DP and male workers with low income, and preventive actions should be considered.