Long-term sickness absence of 32 chronic conditions: a Danish register-based longitudinal study with up to 17 years of follow-up

Leisure-Time Physical Activity to Reduce Risk of Long-Term Sickness Absence Across Diverse Subgroups in the Working Population-A Prospective Cohort Study of 68,000 Participants

BACKGROUND

There is a dearth of knowledge regarding the relationship between engaging in moderate and vigorous physical activity and long-term sickness absence (LTSA), particularly among various population subgroups such as individuals of different ages or body mass indices. We aimed to evaluate the prospective associations of moderate and vigorous leisure-time physical activity with the risk of LTSA in the general working population.

METHODS

A prospective cohort study with a 2-year register follow-up was conducted, where 68,222 representative workers from Denmark completed a questionnaire about work environment, lifestyle, and health. Data on LTSA (≥6 consecutive weeks of sickness absence) were obtained from the Danish Register for Evaluation of Marginalization. We used Cox regression for the statistical analysis, adjusting for relevant confounding factors. We also performed age- and BMI-stratified analyses.

RESULTS

In the fully adjusted model, 2 to 4 hours per week of moderate activity (hazard ratios [HR] = 0.87; 95% CI, 0.77 to 0.99) and ≥2 hours per week of vigorous activity reduced LTSA risk compared with no physical activity. However, 2 to 4 hours per week of vigorous activity (HR = 0.84; 95% CI, 0.76 to 0.91) provided the greatest risk reduction. In the total sample, the complete absence of vigorous activity was associated with increased risk of LTSA (HR = 1.13; 95% CI, 1.05 to 1.22). In stratified analyses, the results were consistent for workers <50 years (HR = 1.14; 95% CI, 1.03 to 1.26), ≥50 years (HR = 1.13; 95% CI, 1.02 to 1.26), and those with a BMI ≥ 25 (HR = 1.16; 95% CI, 1.06 to 1.28). The complete absence of moderate activity was not associated with LTSA.

CONCLUSION

Vigorous leisure-time physical activity appears to be more important than moderate activity to prevent LTSA.

Health status, care dependency and oral care utilization among older adults: a register-based study

BACKGROUND AND OBJECTIVES

The aim of the study was to examine oral care utilisation among older Danes and to describe the extent to which oral care use is associated with the co-existence of challenges relating to general health and care dependency.

MATERIALS AND METHODS

The study used registry data covering the entire population of older adults (≥65 years) in seven municipalities in Denmark (N = 178 787 individuals). Oral care services utilisation was computed from administrative data on oral care contacts up to and including 2019, including both private oral care and a municipal oral care programme (MOCP). Various registry data sources were used to compute risk factors to describe oral care utilisation across indicators of general health and care dependency.

RESULTS

Indicators for poorer health were associated with larger proportions of individuals enrolled in the MOCPs and larger proportions of non-users of any type of oral care. Higher degrees of care dependency were associated with larger proportions of individuals enrolled in MOCPs and individuals with no use of any oral care services, with the exception of nursing home residents, who comprised a lower proportion of non-users than individuals receiving at-home care. Municipal oral care mainly enrolled older adults who were nursing home residents (60% of nursing home residents were enrolled).

CONCLUSION

Our findings support existing evidence on the link between oral care utilisation and general health and frailty. While the municipal care programmes assisted in covering oral care for those with the highest level of care dependency, future preventive strategies for ensuring care continuity for older adults that are increasing in frailty may want to focus on the earlier stages of frailty and of general health deterioration.

A Mega-Ethnography of Qualitative Meta-Syntheses on Return to Work in People with Chronic Health Conditions

PURPOSE

The aim of this study was to synthesize the findings of qualitative meta-syntheses (QMS) on return to work (RTW) of people with different chronic illnesses and to develop a generic RTW model that can provide advice on how to improve RTW interventions and strategies.

METHODS

We conducted a systematic literature search in PubMed, Epistemonikos, CENTRAL, and PsycARTICLES to find relevant QMS, published in English or German between 2000 and 2021, and adapted the meta-ethnographic approach of Noblit and Hare to synthesize their findings.

RESULTS

Nineteen QMS (five focusing on musculoskeletal disorders or chronic pain, four on acquired or traumatic brain injuries, four on cancer, two on mental disorders, one on spinal cord injury, and three on mixed samples) met our inclusion criteria for the meta-ethnographic synthesis. Through systematic comparison and reciprocal translation of the single QMS findings, we could identify a set of key cross-cutting themes/concepts, which formed the basis for four RTW principles and a generic RTW model.

CONCLUSIONS

RTW is a multifactorial and highly interactive multistakeholder process, embedded in an individual's life and working history, as well as in a determined social and societal context. It runs parallel and interdependently to the process of coping with the disease and realigning one's own identity, thus emphasizing the significance of RTW for the person. Besides symptoms and consequences of the disease, individual coping strategies, and RTW motivation, the course and success of RTW are strongly affected by the adaptability of the person's working environment and the social support in their private and working life. Thus, RTW is not only a problem of the individual, but also a matter of the social environment, especially the workplace, requiring a holistic, person-centered, and systemic approach, coordinated by a designated body, which considers the interests of all actors involved in the RTW process.

Using intervention mapping to develop evidence-based toolkits that support workers on long-term sick leave and their managers

BACKGROUND

Managing long-term sickness absence is challenging in countries where employers and managers have the main responsibility to provide return to work support, particularly for workers with poor mental health. Whilst long-term sick leave and return to work frameworks and guidance exist for employers, there are currently no structured return to work protocols for employers or for their workers encompassing best practice strategies to support a positive and timely return to work outcome.

PURPOSE

To utilise the intervention mapping (IM) protocol as a framework to develop return to work toolkits that are underpinned by relevant behaviour change theory targeting mental health to promote a positive return to work experiensce for workers on long-term sick leave.

METHODS

This paper provides a worked example of intervention mapping (IM) to develop an intervention through a six-step process to combine theory and evidence in the development of two toolkits - one designed for managers and one to be used by workers on long-term sick leave. As part of this process, collaborative planning techniques were used to develop the intervention. A planning group was set up, through which researchers would work alongside employer, worker, and mental health professional representatives to develop the toolkits. Additionally, feedback on the toolkits were sought from the target populations of workers and managers and from wider employer stakeholders (e.g., human resource specialists). The implementation and evaluation of the toolkits as a workplace intervention were also planned.

RESULTS

Two toolkits were designed following the six steps of intervention mapping. Feedback from the planning group (n = 5; psychologist, psychiatrist, person with previous experience of poor mental health, employer and charity worker) and participants (n = 14; employers = 3, wellbeing director = 1; human resources = 2, managers = 2, employees with previous experience of poor mental health = 5) target populations indicated that the toolkits were acceptable and much needed.

CONCLUSIONS

Using IM allowed the development of an evidence-based practical intervention, whilst incorporating the views of all the impacted stakeholder groups. The feasibility and acceptability of the toolkits and their supporting intervention components, implementation process and methods of assessment will be evaluated in a feasibility pilot randomised controlled trial.

The association between mental disorders and subsequent years of working life: a Danish population-based cohort study

BACKGROUND

Mental disorders can affect workforce participation via a range of mechanisms. In this study, we aimed to estimate the association between different types of mental disorders and working years lost, defined as the number of years not actively working or enrolled in an educational programme.

METHODS

In this population-based cohort study, we included all people aged 18-65 years (mean 38·0 [SD 13·9]) in the Danish Civil Registration System from Jan 1, 1995 to Dec 31, 2016. Information on mental disorders was obtained from the Danish Psychiatric Central Research Register and information on labour market characteristics was obtained from administrative registers. Follow-up started at age 18 years, immigration to Denmark, or on Jan 1, 1995, whichever came later; and it ended at age 65 years, death, emigration from Denmark, disability pension, voluntary early retirement, or Dec 31, 2016 (whichever came earlier). As the main outcome, we estimated working years lost for those diagnosed with any mental disorder and 24 types of mental disorders, as well as for the general population of same age and sex. We decomposed total working years lost into periods of unemployment or sick leave, disability pension, voluntary early retirement, or death. Data on ethnicity were not available through administrative registers.

FINDINGS

A total of 5 163 321 individuals, 2 642 383 men and 2 520 938 women, were followed up for 65·4 million person-years. Overall, 488 775 (9·47%) individuals were diagnosed with a mental disorder. On average, individuals with mental disorders lost an additional 10·52 (95% CI 10·48-10·57) years of working life compared with the general Danish population. Receiving a disability pension (7·54 [7·49-7·59] years) and longer periods of unemployment (2·24 [2·21-2·27] years) accounted for most of this difference.

INTERPRETATION

Our findings foreground the substantial impact of mental disorders on workforce participation. There is a need to invest in programmes that reduce the burden of working years lost and assist people with mental disorders in returning to the workforce.

FUNDING

Lundbeck Foundation and Danish National Research Foundation.

Staff experiences of diabetes care in residential care facilities for people with severe disabilities in Denmark: a mixed-methods assessment of access to screening for diabetes complications

OBJECTIVES

To identify the prevalence of diabetes among adults (>18 years) living in residential care facilities in Denmark and to identify the structural, practical, and individual barriers and drivers related to their participation in screening programmes.

DESIGN

SETTING: The register-based study included all residents living in residential care facilities in Denmark. The survey and qualitative analysis were carried out exclusively in the Capital Region of Denmark.

PARTICIPANTS

For the register-based study, we identified 11 620 residents of care facilities in Denmark (>18 years) and identified the number of residents with diagnosis codes of type 1 or type 2 diabetes or dispensed prescriptions of blood glucose-lowering medication. Staff from 102 psychiatric facilities housing adults with severe psychiatric disabilities were invited to participate in the survey. Of these, 56 facilities participated with one responder each, of which n=16 also participated in follow-up qualitative interviews.

RESULTS

Register-based study: of the residents at the facilities, 954 (8%) were diagnosed with diabetes. Descriptive statistics of responses and results from content analysis of interviews were summarised in five themes that illuminated how a screening programme could be tailored to the care facilities: (1) characteristics of residents and care facilities, (2) the care needs of residents, (3) the way care was organised, (4) the specific barriers and drivers for participating in programmes, (5) number of hours and settings for screening programmes.

CONCLUSION

To increase the participation of people living in psychiatric care facilities in screening programmes, future programmes should be tailored to the identified needs and barriers experienced by the residential care staff.

Chronic disorders, work-unit leadership quality and long-term sickness absence among 33 025 public hospital employees

OBJECTIVE

This study aimed to examine the association between work-unit level leadership quality and individual-level long-term sickness absence (LTSA) in the hospital sector and effect modification by chronic disorders.

METHODS

This longitudinal analysis included 33 025 Danish public hospital employees who were followed-up for one year after baseline in March 2014. Leadership quality was assessed by questionnaire with mean responses aggregated by work-unit and characterized in tertiles. LTSA during follow-up was determined from employer records. Chronic disorders at baseline was assessed from the Danish hospital and prescription registers. We performed multilevel logistic regression to estimate odds ratios (OR) and 95% confidence intervals (CI) adjusting for potential confounders. We evaluated interaction between chronic illness and low leadership quality on multiplicative and additive scales.

RESULTS

We identified employees as healthy (60.8%) or with somatic (31.6%), mental (3.3%), or both somatic and mental (4.3%) disorders. During follow-up, 6% of employees registered a LTSA. Medium and high leadership quality were associated with lower risk of LTSA with OR of 0.84 (95% CI 0.76-0.94) and 0.73 (95% CI 0.65-0.82) respectively, compared to low leadership quality. Associations were similar for healthy employees and employees with only somatic disorders, whereas no association was observed for employees with mental disorders (in presence or absence of somatic disorders). No statistically significant (α=0.05) interactions between leadership quality and chronic disorders on LTSA were observed.

CONCLUSION

The findings suggest that the quality of leadership in work units is associated with risk of long-term sick leave in the Danish public hospital sector and that strong leadership protects employees against LTSA.

Ageing and health care expenditures: the importance of age per se, steepening of the individual-level expenditure curve, and the role of morbidity

The demographic change towards a larger proportion of older individuals challenges universal health care systems in sustaining high-quality care and universal coverage without budget expansions. To build valuable predictions of the economic burden from population ageing, it is crucial to understand the determinants of individual-level health care expenditures. Often, the focus has been on the relative importance of an individual's age and time to death, while only a few newer studies highlight that individual-level health care expenditures are increasing faster for the elderly-i.e., creating a steepening of the individual-level health care expenditure curve over time. Applying individual-level administrative data for the entire Danish population, our study is the first to use a single data set to examine whether age, time to death, and a steepening of the individual-level health care expenditure curve all contributed to individual-level health care expenditures over a 12 year observation period (2006-2018). We find that individual-level expenditures are associated with an individual's age, an individual's time to death, and a steepening of the expenditure curve, with the steepening driven by individuals above age 75. We observe heterogeneity in the extent and age distribution of steepening across disease groups. The threefold combination of an ageing population, the correlation between expenditures and age per se, and a steepening of the expenditure curve make establishing financially sustainable universal health care systems increasingly difficult. To mitigate budgetary pressure, policy-makers should stimulate cost-effective medical advances and health care utilization in the treatment of elderly. Moreover, steepening scenarios should be added to future health care expenditure forecasts.

Occupation and Sickness Absence in the Different Autonomous Communities of Spain

The occupation of a worker is a determining factor of sickness absence (SA) and can influence both the beginning and continuation of the latter. This study describes SA in Spain, separately in the different Autonomous Communities (AC) in relation to the occupation of workers, with the aim of determining the possible differences in its frequency and duration, relating it also to the diagnosis. A total of 6,543,307 workers, aged 16 years and older, who had at least one episode of SA in the year 2019, constituted the study sample. The obtained results indicate that SA is more frequent and shorter in more elemental occupations. The average duration increases with age and is longer in women, except in technical and administrative occupations, where there is no gender divide. Sickness absences caused by musculoskeletal and mental disorders are more frequent in the lower occupational classes, although their average duration is shorter than in other, more qualified groups. The ACs with shorter duration in almost all the occupational groups are Madrid, Navarre and the Basque Country. In conclusion, SA is more frequent and shorter in lower occupational classes.

Self-reported sickness absence and presenteeism as predictors of future disability pension: Cohort study with 11-year register follow-up

Many healthcare workers in eldercare are pushed out of the labor market before the official retirement age due to poor health. Identification of early warnings signs is important to avoid complete loss of work ability. The aim of this study was to investigate to what degree sickness absence and presenteeism increase future risk for disability pension among eldercare workers. A total of 8952 Danish female eldercare workers responded to a survey about work environment and health. They were followed for 11 years in the Danish Register for Evaluation of Marginalization, with time-to-event analyses estimating the hazard ratios (HRs) for disability pension from sickness absence and presenteeism at baseline. Analyses were adjusted for age, education, body mass index, leisure-time physical activity, smoking, physical exertion at work, and psychosocial factors related to the work environment. During the 11-year follow-up, 11.9% participants received disability pension. For the whole cohort, the highest risk for disability pension was observed for the category of >30 days of combined sickness absence and presenteeism at baseline in the fully adjusted model (HR = 7.93 [95%CI 5.20-12.09]). Eldercare workers aged >45 years were at a higher risk for disability pension in all included categories. Sickness absence and presenteeism increased the risk of disability pension among female eldercare workers. These results suggest that organizations would benefit from identifying early warning signs among workers in the prevention of involuntary early retirement.

Disability pension among persons with chronic disease: Differential impact of a Danish policy reform

BACKGROUND

In 2013, Denmark implemented a reform that tightened the criteria for disability pension, expanded a subsidized job scheme ('flexi-job') and introduced a new vocational rehabilitation scheme. The overall aim of the reform was to keep more persons attached to the labour market. This study investigates the impact of the reform among persons with chronic disease and whether this impact differed across groups defined by labour market affiliation and chronic disease type.

METHODS

The study was conducted as a register-based, nationwide cohort study. The study population included 480 809 persons between 40 and 64 years of age, who suffered from at least one of six chronic diseases. Hazard ratios (HR) and 95% confidence intervals (CI) of being awarded disability pension or flexi-job in the 5 years after vs. the 5 years prior to the reform were estimated.

RESULTS

Overall, the probability of being awarded disability pension was halved after the reform (HR = 0.49, CI: 0.47-0.50). The impact was largest for persons receiving sickness absence benefits (HR = 0.31, CI: 0.24-0.39) and for persons with functional disorders (HR = 0.38, CI: 0.32-0.44). Also, the impact was larger for persons working in manual jobs than for persons working in non-manual jobs. The probability of being awarded a flexi-job was decreased by one-fourth (HR = 0.76, CI: 0.74-0.79) with the largest impact for high-skilled persons working in non-manual jobs.

CONCLUSION

Access to disability pension and flexi-job decreased after the reform. This impact varied according to labour market affiliation and chronic disease type.

Leisure-Time Physical Activity Reduces the Risk of Long-Term Sickness Absence Among Older Healthy Female Eldercare Workers

PURPOSE

This study aimed to examine the association between leisure-time physical activity (PA) and risk of long-term sickness absence (LTSA).

DESIGN

Data on LTSA (≥3 consecutive weeks during a 1-year follow-up) were acquired from the Danish Register for Evaluation of Marginalization and linked to a questionnaire via personal identification number.

SETTING

Eldercare workers from 36 Danish municipalities.

SUBJECTS

Data were retrieved from 4605 healthy Danish female eldercare (i.e., workers assisting senior citizens with daily activities and health) aged 19 to 69 years, who answered a questionnaire on health, and work environment in 2005.

MEASURES

Calculated risk of LTSA and its association with self-reported leisure-time PA.

ANALYSIS

A Cox proportional hazards model was used to calculate adjusted hazard ratios (HR) and 95% confidence intervals (95% CI).

RESULTS

Eldercare workers showed significantly reduced risk of LTSA when performing moderate (HR = 0.67, 95%CI 0.47-0.96), and vigorous leisure-time PA (HR = 0.45, 95%CI 0.25-0.81) (reference group: sedentary). In subgroup analyses, females over 45 years showed a risk reduction of LTSA for moderate (HR = 0.54, 95%CI 0.32-0.90), and vigorous leisure-time PA (HR = 0.43, 95%CI 0.18-0.99), whereas younger eldercare workers did not show significant risk reductions for either moderate (HR = 0.86, 95%CI 0.51-1.43) or vigorous leisure-time PA (HR = 0.50, 95%CI 0.21-1.16) in the fully adjusted model.

CONCLUSIONS

The results indicate that moderate and, particularly, vigorous leisure-time PA reduced risk of LTSA in eldercare workers aged over 45 years.

Increased risk of long-term sickness absence, lower rate of return to work and higher risk of disability pension among people with type 1 and type 2 diabetes mellitus: a Danish retrospective cohort study with up to 17 years' follow-up

AIM

To evaluate labour market outcomes in type 1 or type 2 diabetes.

METHODS

Individuals with type 1 (n = 431) and type 2 diabetes (n = 4047) were identified in Danish national registers from 1994 to 2011 and compared with individuals without diabetes (n = 101 295). Multi-state Cox proportional hazards analyses estimated hazard ratios (HR) with 95% confidence intervals (CI) for transitions between work, sickness absence, unemployment and disability pension.

RESULTS

We observed significantly higher HR of sickness absence in type 1 diabetes (women: 1.34, 95% CI 1.12-1.62; men: 1.43, 1.01-2.03) and type 2 diabetes (women: 1.46, 95% CI 1.35-1.58; men: 1.64, 1.46-1.85) compared with people without diabetes. HR of unemployment was higher for men with type 1 diabetes (1.25, 95% CI 1.01-1.53) and women with type 2 diabetes (1.09, 95% CI 1.03-1.16) and men with type 2 diabetes (1.17, 95% CI 1.08-1.27). HR of disability pension was higher in type 1 diabetes (women: 1.90, 95% CI 1.46-2.46; men: 2.09, 1.38-3.18) and type 2 diabetes (women: 1.78, 95% CI 1.62-1.96; men: 2.11, 1.86-2.40). Only women with type 2 diabetes were less likely to return to work from sickness absence (HR 0.91, 95% CI 0.86-0.98) or unemployment (0.89, 95% CI 0.85-0.94). We found no significant difference between the two types of diabetes. Hazard ratios for diabetes regarding unemployment, sickness absence while unemployed and disability pension were significantly higher for men than for women.

CONCLUSIONS

Both type 1 and type 2 diabetes affect labour market outcomes, but future studies should also consider comorbidity and social gradient.

Descriptive study of sickness absence in Spanish regions in 2018: database study

OBJECTIVES

To provide a wide and thorough description of sickness absence (SA) in Spain, focussing on the different regions of the country and the main characteristics of SA.

METHODS

A study of the SA spells in Spain, managed by the medical units of the National Institute of Social Security in 2018. The geographical scope of this observational study is the regions (Autonomous Community). Incidence, prevalence, and average duration SA in employees and self-employed are described. The study also describes the differences between non-work-related SA and work-related SA. In age and sex variables, the incidence and the average duration are described. The average duration by Diagnostic Chapters (International Classification of Diseases, 10^th Revision (ICD-10)) and the highest number of SA spells by occupational activity and diagnosis are analysed.

RESULTS

A total of 540 045 SA spells are analysed by non-work-related SA and 63 441 by work-related SA. The national average prevalence in non-work-related SA spells is 32.98/1000 among employed and 30.48/1000 among self-employed; in work-related SA spells, the prevalence is 3.99/1000. The national incidence in non-work-related SA spells is 24.8/1000 for employees and 9.51/1000 for self-employed workers; in work-related SA spells the incidence is 3.55/1000. The average duration is 58.67 days, with the longest duration being neoplasms and the shortest corresponding to infectious disease. The Community of Madrid shows the lowest prevalence, incidence and average duration in work-related SA. Influenza is the diagnosis that generates the largest number of SA spells. Activities of call centres and temporary employment agency activities are the occupations that have the highest number of SA spells.

CONCLUSIONS

The biggest differences are found in the incidence and average duration, between the non-work-related SA spells and work-related SA. If those characteristics of the SA in which a region is more in deficit are known, it will be possible to do better management of the SA.

Association Between Physical Activity and Odds of Chronic Conditions Among Workers in Spain

INTRODUCTION

Prevention of chronic conditions is a major public health challenge, and achieving minimum recommended levels of physical activity aids in reaching this objective. The aim of our study was to investigate whether levels of physical activity were associated with the prevalence of common chronic conditions among the Spanish workforce.

METHODS

We retrieved data from the Spanish National Health Survey 2017 (N = 9,695) in which the mean age of participants was 44.4 (standard deviation, 10.4 y), and 47.4% were women. Workers self-reported a set of 6 chronic conditions (ie, chronic low-back pain, chronic neck pain, diabetes, hypertension, depression, and anxiety), and we used the International Physical Activity Questionnaire short form to estimate physical activity. We performed multivariable logistic regression adjusted for possible confounders to assess associations between physical activity and chronic conditions.

RESULTS

The final adjusted model showed that performing less than 600 metabolic equivalent-minutes per week of physical activity was associated with significantly increased odds for chronic conditions (adjusted odds ratio [aOR] = 1.18; 95% CI, 1.07-1.30). Of the sex and age subgroups analyzed, this association was significant in men aged 17 to 44 (aOR = 1.21; 95% CI, 1.00-1.46). Among chronic conditions, low-back pain and anxiety were associated with low levels of physical activity, whereas covariates such as body mass index, smoking habits, education level, and occupational class had an important influence on the association between physical activity and chronic conditions.

CONCLUSION

Results suggest that achieving sufficient physical activity could reduce chronic conditions among Spanish workers.

State of the art: understanding and integration of the social context in diabetes care

We review the past 25 years of research addressing challenges people living with diabetes experience in their daily lives related to social contexts, i.e. in their family, at work and in society at large, and identify research gaps. We found that young people with diabetes, as they develop through to adulthood, are exposed to considerable risks to their physical and mental health. Family-system interventions have had mixed outcomes. Research in this area would benefit from attention to ethnic/cultural diversity, and involving fathers and other family members. In adults with diabetes, social support relates to better diabetes outcomes. While family member involvement in care is likely to affect health and psychosocial outcomes of the person with diabetes, key elements and mediators of effective family interventions need to be identified. The challenges of diabetes management at work are under-researched; distress and intentional hyperglycaemia are common. When depression is comorbid with diabetes, there are increased work-related risks, e.g. unemployment, sickness absence and reduced income. Research to support people with diabetes at work should involve colleagues and employers to raise awareness and create supportive environments. Stigma and discrimination have been found to be more common than previously acknowledged, affecting self-care, well-being and access to health services. Guidance on stigma-reducing choice of language has been published recently. Resilience, defined as successful adaptation to adversity such as stigma and discrimination, requires studies relevant to the specific challenges of diabetes, whether at diagnosis or subsequently. The importance of the social context for living well with diabetes is now fully recognized, but understanding of many of the challenges, whether at home or work, is still limited, with much work needed to develop successful interventions.

BMI and Medically Certified Long-Term Sickness Absence Among Japanese Employees

OBJECTIVE

In contrast to the association between excess weight and sickness absence (SA), the association in relation to underweight has been under-researched. This study aimed to examine the effects of BMI at both extremes of its distribution on SA.

METHODS

Data came from the Japan Epidemiology Collaboration on Occupational Health study of 77,760 workers aged 20 to 59 years (66,166 males, 11,594 females). Information was collected on medically certified long-term SA (LTSA) (i.e., SA lasting ≥ 30 consecutive days) from April 2012 to March 2017. A sex-specific Cox proportional hazards model was used to investigate the associations.

RESULTS

Among males, both obesity (hazard ratio [HR] = 1.81, 95% CI: 1.50-2.17) and underweight (HR = 1.56, 95% CI: 1.23-1.96) were significantly associated with LTSA compared with normal weight. This U-shaped association between BMI categories and LTSA was observed both for mental and physical disorders. Among females, an elevated risk was observed among those with overweight (HR = 1.54, 95% CI: 1.16-2.05).

CONCLUSIONS

In a cohort of the Japanese working-age population, both obesity and underweight were associated with a greater risk of LTSA in males. Future research should not overlook the excess risk of LTSA associated with underweight.

Glucose metabolism in midlife predicts participation in working life: a Northern Finland Birth Cohort 1966 study

Objective

To evaluate how clinically measured glucose metabolism categories predict registered participation in working life.

Methods

In the 46-year follow-up of Northern Finland Birth Cohort 1966 (n=5328, 2342 men and 2986 women), we used oral glucose tolerance tests, surveys and glycated haemoglobin to determine glucose metabolism categorised as normal, pre-diabetes, screen-detected and previous type 2 diabetes (T2D). Consequent participation in working life during the 2-year follow-up period was measured as registered disability, unemployment and employment days, for which incidence rate ratios (IRRs) with 95% CIs were calculated using Poisson regression, adjusted for baseline employment and socioeconomic, health-related and behavioural factors.

Results

In comparison to normal glucose, all categories of impaired glucose metabolism were associated with poorer participation in working life in the unadjusted models. After adjustments, the risks (IRR (95% CI)) of disability days remained heightened by both screen-detected and previous T2D among men (1.3 (1.3 to 1.4) and 1.5 (1.4 to 1.5), respectively), whereas among women the risks were lowered (0.9 (0.8 to 0.9) and 0.9 (0.9 to 1.0), respectively). The risks of unemployment were consistently higher in all categories of impaired glucose metabolism, and were the highest among women with previous T2D (1.6 (1.5 to 1.6)). Correspondingly, the rates of total employment days were lower in relation to screen-detected T2D among men and women (5% and 6%, respectively), and previous T2D (6% and 3%).

Conclusions

Overall, impaired glucose metabolism associated with deteriorated working life participation already in middle age. The high prevalence of impaired glucose metabolism emphasises the need for actions to support sustainable working careers.