Social inequalities in trajectories of contacts with the healthcare system in adolescence and young adulthood.

BACKGROUND: Understanding of healthcare utilization of different populations is useful for prevention and prioritization of healthcare resources. This study aims to identify populations following different trajectories of contacts with the healthcare system and to describe social inequalities between the groups. METHODS: Individuals born 1980-2000 in Denmark were linked to national registers. Contacts with somatic hospitals, psychiatric hospitals, general practitioners, and redeemed prescriptions were counted for each year between 16 and 37 years of age. Trajectories of contacts with the four dimensions of healthcare use were identified using group-based multi-trajectory modeling. RESULTS: Five trajectory groups were identified. One group had low healthcare utilization over time (12% in women; 27% in men). The largest group had low healthcare utilization but more contacts with especially GP (39% in women; 43% in men). A third group had more contacts with most dimensions of the healthcare system (33% in women; 21% in men). The fourth group had many contacts with especially somatic hospitals and GP (7% in women; 4% in men). The fifth group had many contacts especially to psychiatric hospitals (8% in women; 5% in men). Shorter parental education, parental unemployment, family income below the poverty line, and cohabitation with one or no parent was more frequent in the two high utilization groups compared to the lower utilization groups. CONCLUSION: The observed trajectories of health service use and the social inequalities between trajectory groups highlight that prevention and treatment targeting the entire population will benefit from a complementary focus on social inequalities in health.

Alcohol Intake and Academic Performance and Dropout in High School: A Prospective Cohort Study in 65,233 Adolescents.

PURPOSE: During the teenage years, many adolescents start drinking alcohol, and binge drinking is prevalent. We investigated the relationship between alcohol intake and academic performance. METHODS: We conducted a longitudinal cohort study by combining data from the Danish National Youth Study on 65,233 high school students aged 15-20 years, with information on dropout and grade point average. We assessed associations between alcohol intake and academic performance using multilevel Poisson regression and linear regression, accounting for dependency between students from the same school and class. RESULTS: The average alcohol intake was 10 drinks per week, and 43.6% engaged in binge drinking 3+ times per month. During follow-up, 9.8% of the boys and 6.7% of the girls dropped out. The incidence rate ratio was higher in never drinkers, frequent binge drinkers, and those with a high weekly alcohol intake as compared to those with a low intake. For example, the incidence rate ratio was 1.47 (95% confidence level: 1.24, 1.76) in girls who drank 21-27 drinks per week and 1.29 (95% confidence level: 1.13, 1.48) in girls who never drank as compared to those who drank <7 drinks per week. Alcohol associated with a lower grade point average over the entire span of intake in a dose-dependent manner, and similarly so in boys and girls. Findings were consistent in strata of socioeconomy and individual academic ambition. DISCUSSION: Alcohol intake has implications for academic performance and poses a threat for the prospects of the individual as well as society. Policies and interventions aimed at lowering the intake among high school students are warranted.

Socioeconomic inequalities in alcohol-related harm in adolescents: a prospective cohort study of 68,299 Danish 15-19-year-olds.

Background: Evidence shows that similar levels of alcohol consumption lead to greater harm in adults with low socioeconomic position (SEP) compared to high SEP. We investigated if SEP is associated with alcohol-related hospital contacts in adolescents, and whether differences in risk can be explained by differences in levels of alcohol consumption, drinking pattern, and substance use. Methods: This is a prospective cohort study of 68,299 participants aged 15-19 years old from the Danish National Youth Cohort 2014. SEP was operationalised as parent educational level, family income and perceived financial strain in the family. Data were linked to national registers and participants were followed up for five years from 2014 to 2019. Outcomes were hospital contacts due to alcohol. Multilevel Poisson regression was used to estimate incidence rates (IR) and incidence rate ratios (IRR). Findings: During 280,010 person years of follow-up, 872 participants had an alcohol-attributable hospital contact; intoxications (n = 778, 89%) were the most common diagnosis. Low as compared to high SEP was associated with higher IRR of alcohol-attributable hospital contacts for all three SEP measures. The adjusted IRR of harm was 1.73 (95% CI: 1.29-2.33) for elementary school as the highest parent education compared to longer parent education and 1.57 (95% CI: 1.30-1.89) for family financial strain compared to those without financial strain. Adjustment for weekly alcohol intake, drinking pattern and substance use did not substantially change results. Cubic spline analysis of the association between family income and alcohol-attributable hospital contacts revealed a dose-response relationship with decreasing risk of alcohol-related harm with higher income. Interpretation: Our findings suggested that alcohol-related harm is more common in socioeconomically disadvantaged adolescents despite similar levels of alcohol consumption, regardless of differences in drinking pattern or substance use. Future preventive strategies should prioritise young adolescents, including those who are most disadvantaged. Funding: Tryg Foundation (ID: 153539).

Changes in mental well-being during the COVID-19 pandemic: A longitudinal study among Danes from 2019 to 2021.

Numerous studies have shown that the COVID-19 pandemic had large influence on mental health during the first lockdown, but fewer studies have focused on the long-term influence on mental health. In a national longitudinal study, we examined mental well-being measured just before (fall 2019) and twice during (falls of 2020 and 2021) the COVID-19 pandemic. We utilized the Danish Health and Wellbeing Survey with questionnaires collected in 2019, 2020 and 2021 among the same study population consisting of 8179 persons. The outcome was mental well-being measured by the Short Warwick-Edinburgh Mental Well-Being Scale (SWEMWBS). Linear regression models were conducted to evaluate change in SWEMWBS from 2019 to 2021. The SWEMWBS distribution was similar in 2019, 2020 and 2021, although the distribution moved to lower scores in 2020 compared to 2019 and moved slightly to higher scores in 2021 compared to 2020. Mean SWEMWBS decreased from 24.8 (95%CI 24.7-25.0) in 2019 to 24.1 (24.0-24.2) in 2020 and increased to 24.4 (24.3-24.6) in 2021 (p < 0.001). The mean decrease from 2019 to 2020 and increase from 2020 to 2021 was strongest among women, persons below age 75 years, persons without depression and among persons with higher education and with employment. In conclusion, we find that mental well-being decreased from 2019 to 2020 and slightly increased from 2020 to 2021 without reaching the pre-pandemic level. These changes are statistically significant but small and support that COVID-19 may only have had a small long-term influence on mental health in the general population.

Perceived parental alcohol problems and later dropout and grade point average in high school: A register-based follow-up study.

INTRODUCTION: The aim of the study was to test the hypothesis that young people with perceived parental alcohol problems have higher dropout rates in high school and lower grade point average (GPA) at graduation compared to young people without perceived parental alcohol problems. METHODS: Data come from Danish National Youth Study 2014 (n = 62,171), merged with register-data on later dropout of high school and GPA. Multilevel Poisson regression models of incidence rates of dropout and multilevel linear models of GPA were used to assess the association with perceived parental alcohol problems. RESULTS: A total of 6.6% of the students perceived their parent(s) to have alcohol problems. Young people with perceived parental alcohol problems had higher dropout rate (girls incidence rate ratio 1.83; 95% confidence interval [1.62-2.06]); boys (incidence rate ratio 1.38; 95% confidence interval [1.17-1.64]) and lower grades (GPA: -0.24; 95% confidence interval [-0.32; -0.17]) compared to those without. There was no statistically significant difference between mother's and fathers' alcohol problems in the associations with dropout and GPA. DISCUSSION AND CONCLUSIONS: Perceived parental alcohol problems were associated with higher incidence rate ratio of dropout and lower grades within all categories of the socioeconomic factors. Our results show that young people with perceived parental alcohol problems have higher high school dropout rates and lower grades compared to those without perceived parental alcohol problems across gender and socioeconomic position. The results call for evidence-based interventions to support young people with parental alcohol problems in the educational system.

Alcohol norms and alcohol intake among high school students.

AIMS: To analyse whether parental alcohol norms were associated with the alcohol intake of high school students and whether this association persisted across different levels of alcohol intake in school and trustful communication with parents. METHODS: This was a cross-sectional study among 70,544 high school students (mean age 18 years) participating in the Danish National Youth Study 2014. We examined the associations between parental alcohol norms and individual alcohol intake as the number of drinks at the most recent school party and the frequency of binge drinking in the last 30 days using negative binomial regression. We then performed joint analyses of parental alcohol norms and alcohol intake at school level, and parental alcohol norms and trustful communication with parents. RESULTS: The mean intake of alcohol at the most recent school party was 9.9 units of alcohol for boys and 7.6 units of alcohol for girls. A total of 36.2% of boys and 24.7% of girls were binge drinking frequently (more than four occasions in the last month). Lenient parental alcohol norms and a low level of trustful communication with parents were associated with a higher intake at the most recent school party and with the frequency of binge drinking. Joint analyses showed that these associations persisted across different levels of school level alcohol intake and levels of trustful communication with parents. CONCLUSIONS: Among high school students, parental alcohol norms were strongly associated with alcohol intake and consistently so across different levels of school level alcohol intake and level of trustful communication with parents. This indicates that the role of parents in preventing excessive drinking is important, even in older adolescents.

Mental wellbeing among Danish employees during the COVID-19 pandemic: results from a longitudinal study on the role of industry and working environment.

BACKGROUND: The COVID-19 pandemic has had a profound impact on working life. Previous studies have primarily focused on the mental health and wellbeing of healthcare workers and are mostly based on cross-sectional data from non-representative samples. The aim of this study was to investigate mental wellbeing trajectories among employees from different industries, and to longitudinally identify factors that affect mental wellbeing during the COVID-19 pandemic, including job insecurity, fear of COVID-19, working from home or being discharged with wage compensation and management quality. METHODS: Baseline data were obtained from the Danish Health and Wellbeing Survey in 2019 (September-December), with follow-up in September-November 2020. We included 1995 respondents, who completed the questionnaire in both waves and were employed in 2020 and measured mental wellbeing using the Short Warwick-Edinburgh Mental Well-Being Scale. RESULTS: Mental wellbeing declined among employees in all industries. Employees working from home and employees unsatisfied with management experienced a greater decline in mental wellbeing. We found no differences in mental wellbeing trajectories in relation to fear of infecting others or contracting COVID-19, job insecurity and being discharged with wage compensation. CONCLUSIONS: Mental wellbeing declined among employees in all industries with no difference between industries. Employees working from home may have been particularly vulnerable, and the analyses show that managers play a key role in mitigating the negative consequences of the pandemic by ensuring adequate information and involvement of employees.

Effects of individual and parental educational levels on multimorbidity classes: a register-based longitudinal study in a Danish population.

OBJECTIVES: To assess the effects of individual educational level in adulthood and parental educational level during childhood, as well as combinations of individual and parental educational levels, on multimorbidity classes. DESIGN AND SETTING: In this longitudinal study, we used data from a random sample of the Danish population aged 32-56 years without multimorbidity in 2010 (n=102 818). The study population was followed until 2018. Information on individual and parental educational levels and chronic conditions was obtained from national registers. Multinomial logistic regression analyses were adjusted for sex, age and ethnicity. OUTCOME MEASURE: Seven multimorbidity classes were identified using latent class analysis based on 47 chronic conditions. Persons deceased during follow-up comprised a separate class. RESULTS: We found an independent effect of individual educational level on five multimorbidity groups and death, most pronounced for the multimorbidity group 'Many conditions' (OR=1.89, 95% CI 1.58 to 2.26 for medium and OR=3.22, 95% CI 2.68 to 3.87 for short compared with long educational level) and of parental education on four groups and death, most pronounced for the multimorbidity group 'Many conditions' (OR=1.36, 95% CI 1.07 to 1.73 for medium and OR=1.48, 95% CI 1.15 to 1.89 for short compared with long educational level). Odds of belonging to four multimorbidity classes increased with lower combination of individual and parental educational levels, most pronounced for the multimorbidity group 'Many conditions'. CONCLUSION: As both individual and parental educational levels contribute to the risk of multimorbidity, it is important to address inequality throughout the life course to mitigate multimorbidity. Future studies could adopt a life course approach to investigate the mediating role of behavioural, clinical, environmental and other social factors.

The Danish Health and Wellbeing Survey: Study design, response proportion and respondent characteristics.

AIMS: This study aimed to describe the study design and respondent characteristics (including non-response analyses) of the Danish Health and Wellbeing Surveys in 2015 and 2019 and a follow-up survey that was carried out during the COVID-19 pandemic in 2020. METHODS: The Danish Health and Wellbeing Survey is the Danish part of the European Health Interview Survey (EHIS). The samples in 2015 (N=12,000) and 2019 (N=14,000) were both based on a simple random selection of individuals aged ⩾15 years from the Danish Civil Registration System. All individuals from the sample in 2019 who were still alive and living in Denmark were reinvited for a follow-up survey in 2020 (N=13,474). Data in all surveys were collected via self-administered questionnaires (web or paper based). The questionnaires in 2015 and 2019 included the EHIS model questionnaire as well as national questions, whereas the questionnaire in 2020 mainly focused on physical and mental health, employment and working lives, and health behaviour. RESULTS: The overall response proportion declined slightly between 2015 (48.4%) and 2019 (47.4%) but went up to 49.8% in the follow-up survey in 2020. Unit non-response was associated with, for example, male sex, younger age, being unmarried and lower educational level but not with degree of urbanisation. In all, 5000 individuals completed the questionnaire in both 2019 and 2020. CONCLUSIONS: The results are in line with most previous research on non-response in health surveys. However, an association between degree of urbanisation and non-response has been suggested in previous studies. This association was not found in our study.

Decreasing mental well-being during the COVID-19 pandemic: A longitudinal study among Danes before and during the pandemic.

The COVID-19 pandemic has had a huge impact on people's lives and may influence mental health in the general population. In a unique representative Danish longitudinal study, we examined mental well-being measured just before and during the COVID-19 pandemic. The Danish Health and Wellbeing Survey is the Danish contribution to the European Health Interview Survey. In this study, we included the wave from autumn 2019, which we re-invited in the autumn 2020. The study population consisted of 4,234 persons. The main outcome was mental well-being measured by the Short Warwick-Edinburgh Mental Well-Being Scale (SWEMWBS). Linear and logistic regression models were conducted to evaluate change in SWEMWBS between 2019 and 2020. The SWEMWBS distribution was similar in 2019 and 2020, although the distribution moved to lower scores in 2020 compared to 2019. Mean SWEMWBS decreased significantly from 25.5 in 2019 to 24.6 in 2020 corresponding to a mean change of -1.0 (95%CI, -1.1. to -0.8). The proportion with low SWEMWBS increased from 16.5% in 2019 to 20.1% in 2020 (p < 0.001). The mean change was similar for men and women and for different age groups. The most negative development was observed among persons without depression or long-standing illnesses at baseline and among persons with higher educational level. Among persons with depression SWEMWBS increased. As expected, mental well-being significantly decreased in the adult Danish population during the COVID-19 pandemic. However, somewhat more unexpectedly, the decrease was most pronounced among persons without depression or long-standing illnesses and among higher educated groups.

[Harmful consequences of heavy episodic drinking in young people in Denmark].

Danish young people have a high alcohol intake as summarised in this review. Heavy drinking is associated with risk of adverse events such as accidents, violence, taking drugs or sex that is later regretted. Also, school performance may be affected negatively by heavy drinking, and alcohol may interfere with brain development. The risk of developing alcohol use disorder is increased in individuals who start drinking at an early age. Population-based interventions such as increasing the legal age of buying alcohol from 16 to 18 years, as in many other countries, can be introduced in order to minimise heavy drinking in young people.

Meat consumption, stratified by dietary quality, and risk of heart disease.

Associations between meat consumption and heart disease have been assessed in several studies, but it has been suggested that other dietary factors influence these associations. The aim of the present study was to assess whether meat consumption is associated with ischaemic heart disease (IHD), and if the association is modified by dietary quality. The analyses were based on the cohort of adult participants in the Danish National Survey on Diet and Physical Activity in 2000-2002, 2003-2008 and 2011-2013. From these surveys, information on meat consumption and dietary quality was extracted. The cohort was followed in national registers to identify incident IHD. Associations were estimated using Cox regression analyses adjusting for socio-demographic and lifestyle factors. Analyses of associations between meat consumption and IHD stratified by dietary quality were subsequently evaluated. Among the 8007 participants, the median follow-up was 9·8 years and 439 cases of IHD were recorded. The results suggested a trend between consumption increments of 100 g/d of red meat (hazard ratio (HR) = 1·23; 95 % CI 0·99, 1·53) or of 50 g/d of processed meat (HR = 1·09; 95 % CI 0·93, 1·29) and higher risk of IHD. The trends were, however, not statistically significant. Stratification by dietary quality did not suggest that associations between meat consumption and risk of IHD were modified by dietary quality. This population-based cohort study with detailed dietary information suggested a trend with higher meat consumption being associated with higher risk of IHD, but the association was not statistically significant. Results did not indicate that dietary quality modifies such associations.

Dietary Intake of Red Meat, Processed Meat, and Poultry and Risk of Colorectal Cancer and All-Cause Mortality in the Context of Dietary Guideline Compliance.

Meat intake has been linked to increased risk of colorectal cancer (CRC) and mortality. However, diet composition may affect the risks. We aimed to estimate associations between red and processed meat and poultry intake and risk of CRC and all-cause mortality and if they are modified by dietary quality using Cox regression analyses. Baseline dietary data were obtained from three survey rounds of the Danish National Survey on Diet and Physical Activity. Data on CRC and all-cause mortality were extracted from national registers. The cohort was followed from date of survey interview-or for CRC, from age 50 years, whichever came last, until 31 December 2017. Meat intake was analysed categorically and continuously, and stratified by dietary quality for 15-75-year-old Danes at baseline, n 6282 for CRC and n 9848 for mortality analyses. We found no significant association between red and processed meat intake and CRC risk. For poultry, increased CRC risk for high versus low intake (HR 1.62; 95%CI 1.13-2.31) was found, but not when examining risk change per 100 g increased intake. We showed no association between meat intake and all-cause mortality. The association between meat intake and CRC or mortality risk was not modified by dietary quality.

Patterns of multimorbidity and demographic profile of latent classes in a Danish population-A register-based study.

BACKGROUND: Multimorbidity is an increasing public health concern and is associated with a range of further adverse outcomes. Identification of disease patterns as well as characteristics of populations affected by multimorbidity is important for prevention strategies to identify those at risk. AIM: The aim of the study was to identify and describe demographic characteristics of multimorbidity classes in three age groups (16-44 years, 45-64 years, and 65+ years). METHODS: Based on register information on 47 chronic diseases and conditions, we used latent class analysis to identify multimorbidity classes in a random sample of the Danish population (n = 470,794). Information on sociodemographic characteristics (age, sex, region of origin, educational level, employment status, and marital status) was obtained from registers and linked to the study population. Age- and sex-adjusted multinomial logistic regression models were used to examine associations between multimorbidity classes and sociodemographic characteristics. RESULTS: We identified seven classes among individuals in the age groups 45-64 years and 65+ years and five classes in the age group 16-44 years. Overall, the classes were similar in the three age groups, but varied in size, i.e. the class 'No or few diseases' was larger in the younger age group. The class 'Many diseases' (a class with both somatic diseases and mental illnesses) was only seen in individuals aged 45-64 years and 65+ years. There were social inequalities in odds of belonging to the multimorbidity classes compared to the healthier class. These social inequalities varied but were especially strong in the classes named 'Many diseases' and 'Mental illness, epilepsy'. CONCLUSION: The results of the study suggest that there are social inequalities in multimorbidity but that these inequalities are not universal to all types of multimorbidity. This supports that multimorbidity is diverse and should be prevented and treated accordingly.

HIV and metabolic syndrome in an Ethiopian population.

BACKGROUND: The global prevalence of metabolic syndrome (MS) is increasing due to lifestyle changes. Studies have found that MS is associated with human immunodeficiency virus (HIV) and antiretroviral treatment (ART), but controversies still exist on associations between HIV and MS. AIMS: To assess associations between HIV and MS among ART-naïve HIV positive individuals compared to HIV negative individuals. SUBJECTS AND METHODS: A cross-sectional study among ART-naïve HIV positive and HIV negative individuals recruited from HIV treatment and testing facilities in Ethiopia. Information was collected on components of MS: waist circumference, triglycerides, high-density lipoprotein cholesterol (HDL-C), blood pressure and fasting plasma glucose (FPG). Data were analysed using logistic and linear regression stratified by sex and adjusted for age, wealth and education. RESULTS: Data from 329 HIV positive and 100 HIV negative individuals were included. HIV positive status was associated with higher odds of MS in women (OR: 3.56, 95%CI: 1.25; 10.15) (n = 292), but not in men (OR: 0.98, 95%CI: 0.22; 4.30) (n = 137), interaction: p= .11. Associations between HIV and components of MS were strongest for HDL-C among women and for FPG among men. The most prevalent components of MS in HIV positive individuals were elevated triglycerides, reduced HDL-C and elevated FPG. CONCLUSIONS: HIV was associated with MS among ART-naïve women, suggesting that MS should be evaluated before initiating ART and monitored during treatment to identify those at risk of developing diabetes and cardiovascular disease (CVD).

Socio-economic disparity in risk of undergoing emergency laparotomy and postoperative mortality.

Aims: Socio-economic disparities in health and access to care are well documented, but socio-economic disparities in surgical care and outcomes have received less attention. The aim of the study was to determine if there are socio-economic disparities in the risk of undergoing emergency laparotomy and postoperative mortality in a universal health-care system with free and equal access to care. Methods: This was a nationwide case-control study including patients undergoing non-malignant emergency laparotomy involving resection, ostomy or open drainage between 2003 and 2014 and population references matched 1:1 on age and sex. Socio-economic disparities in one-year postoperative mortality were explored through a cohort study including all patients. Exposure measures were register-based household disposable income, educational level and employment status. Analyses were adjusted by age, sex, country of origin, marital status and co-morbidity. Results: A total of 11,962 cases and 11,962 population references were included. The highest odds ratios (OR) for undergoing surgery were found among those with the lowest income (OR=1.51; 95% confidence interval (CI) 1.39-1.63), those with elementary school education (OR=1.33; 95% CI 1.22-1.46) and those on early-retirement pension (OR=3.49; 95% CI 3.07-3.98). One-year postoperative mortality was highest among those with lowest income (hazard ratio (HR)=1.51; 95% CI 1.35-1.69), those with elementary school education (HR=1.39; 95% CI 1.22-1.59) and those on early-retirement pension (HR=2.12; 95% CI 1.73-2.61). Conclusions: Socio-economic disparities in health exist in relation to non-malignant emergency laparotomies and still exist after adjustment for confounders, including co-morbidity, indicating that mechanisms other than differences in disease burden are involved. There is a substantial need for exploration of mechanisms and preventive measures.

Socioeconomic position and alcohol-related harm in Danish adolescents.

BACKGROUND: In adults, it has consistently been observed that with equal alcohol consumption levels, alcohol harms individuals with low socioeconomic position (SEP) more than individuals with high SEP. It is unknown if this so-called alcohol harm paradox is also present in adolescents. We aim to test the hypothesis that low SEP is associated with more alcohol-related harm as compared with higher SEP in Danish adolescents. METHODS: We used survey data from the Danish National Youth Study 2014 including 70 566 students from 119 high schools. Alcohol-related harm was measured by self-report as having been in a fight, involved in an accident, had problems with parents or friends, had sex that was regretted afterwards and done drugs that was regretted afterwards, because of alcohol. Further, a combined measure was constructed defined as having experienced any harm more than once within the last year. SEP was measured as parents' educational level, family income, parents' employment status and experiencing financial strain in the family. Analyses were adjusted by age, sex, perceived ethnicity, class type and binge drinking. RESULTS: Lower SEP was associated with higher odds of experiencing alcohol-related harm more than once as compared with highest SEP, and lower SEP was associated with higher odds of having been in a fight, problems with parents or friends, sex and regretting afterwards or drugs and regretting afterwards, as compared with highest SEP. These associations were statistically significant. Adjustment for the frequency of binge drinking did not change results. CONCLUSION: The alcohol harm paradox exists in Danish adolescents, and this should be addressed in future prevention strategies to reduce the risk of alcohol-related harm among adolescents.

Risk of subacromial shoulder disorder in airport baggage handlers: combining duration and intensity of musculoskeletal shoulder loads.

Musculoskeletal shoulder load among baggage handlers measured by combining duration and intensity based on biomechanical and epidemiological information may be a stronger predictor of subacromial shoulder disorders than baggage handler seniority. In 2012, a cohort of baggage handlers employed at Copenhagen Airport in 1990-2012, and a cohort of unskilled otherwise employed men answered a survey. Self-reported information on work tasks during employment in the airport in combination with work task specific biomechanically modelled forces in the shoulder joint was used to estimate shoulder load. Exposure measures were accumulated shoulder abduction moment, accumulated shoulder compression force, accumulated supraspinatus force and baggage handler seniority. The outcome was subacromial shoulder disorder registered in the Danish National Patient Register. When analyses were adjusted by all confounders except age, exposure variables showed close to significant associations with subacromial shoulder disorder. Results could not confirm our hypothesis that combined information on work task duration and shoulder load intensity was stronger associated with subacromial shoulder disorder than seniority. Practitioner Summary: In this study we sought to identify if the exposure to work-related musculoskeletal shoulder loading including duration and intensity among baggage handlers was associated with subacromial shoulder disorder. We found that there was an association but this was not stronger than that between baggage handler seniority and subacromial shoulder disorder.

Subacromial shoulder disorders among baggage handlers: an observational cohort study.

PURPOSE: To assess the influence of cumulative employment as baggage handler on the risk of incident subacromial shoulder disorders. Baggage handling is characterized by repetitive work primarily consisting of heavy lifting in awkward positions and time pressure. METHODS: This cohort study is based on the Copenhagen Airport Cohort consisting of unskilled men with employment at Copenhagen Airport and unskilled men with employment in other firms in the Greater Copenhagen area during the period 1990-2012. Only men were included. We followed the cohort in the National Patient Register and Civil Registration System. The primary exposure was cumulative years of employment as a baggage handler, and the primary outcome was diagnoses and surgical treatment of subacromial shoulder disorders. RESULTS: The cohort contained 3396 baggage handlers and 63,909 workers in the reference group. Baggage handlers with longer cumulative years of employment had higher incidence compared to baggage handlers with shorter employment; for example, baggage handlers with 10-19 years of employment had incidence rate ratio of 2.07 (95 % confidence interval, 1.27-3.38) compared to baggage handlers with less than 3 years of employment. Spline regression showed an increase in incidence within the first few years after employment whereupon the increased risk remained constant for longer employment. Baggage handlers had increased incidence in younger ages than the reference population. CONCLUSIONS: In this large cohort study, we found increased incidence of subacromial shoulder disorders for workers with longer cumulative years of employment. These results support that long-term lifting in awkward positions and time pressure influences the risk of subacromial shoulder disorders.

Differences in uptake of immunisations and health examinations among refugee children compared to Danish-born children: a cohort study.

UNLABELLED: Refugee children and their families constitute a vulnerable group regarding health and access to care. In a register-based cohort design, we examined differences in uptake of immunisations and child health examinations between refugee children and Danish-born children, including predictors of uptake among refugee children. Refugee children (n = 16,701) who, between January 1993 and December 2010, obtained residency permits in Denmark were included and matched in a 1:6 ratio on age and sex with Danish-born children (n = 100,206). Personal identification numbers were cross-linked to the National Danish Health Service Register, identifying all contacts for immunisation and child health examinations. We estimated hazard ratios (HR) of uptake. Refugee children had a lower uptake of all immunisations compared to Danish-born children. The lowest uptake was found for immunisation against diphtheria, tetanus, pertussis and polio (HR = 0.50; 95 % confidence interval (CI) 0.48-0.51). Participation in child health examinations was also lower among refugee children with the lowest at the last child health examination at age 5 (HR = 0.48; 95 % CI 0.47-0.50). Adjusting the analysis for parental income increased the HRs by 10-20 %. CONCLUSION: This Danish register-based study using nationwide data revealed a lower uptake of routine immunisations and child health examinations among refugee children compared to Danish-born children. WHAT IS KNOWN: •Uptake of immunisation and child health examination is associated with low household income, unemployment and low educational status among the parents. •Uptake may be even lower among refugee families as they constitute a vulnerable group regarding access to healthcare. What is New: •Refugee children had lower uptake of immunisations and child health examinations compared to Danish-born children. •Several predictors of uptake were identified including region of origin and duration of residence.