| 1. |
- af Geijerstam, Agnes, et al.
(författare)
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Fitness, strength and severity of COVID-19: a prospective register study of 1 559 187 Swedish conscripts
- 2021
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 11:7
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Tidskriftsartikel (refereegranskat)abstract
- Objective To investigate the possible connection between cardiorespiratory fitness (CRF) and muscle strength in early adulthood and severity of COVID-19 later in life. Design Prospective registry-based cohort study. Participants 1 559 187 Swedish men, undergoing military conscription between 1968 and 2005 at a mean age of 18.3 (SD 0.73) years. Main outcome measures Hospitalisation, intensive care or death due to COVID-19 from March to September 2020, in relation to CRF and muscle strength. Results High CRF in late adolescence and early adulthood had a protective association with severe COVID-19 later in life with OR (95% CI) 0.76 (0.67 to 0.85) for hospitalisation (n=2 006), 0.61 (0.48 to 0.78) for intensive care (n=445) and 0.56 (0.37 to 0.85) for mortality (n=149), compared with the lowest category of CRF. The association remains unchanged when controlled for body mass index (BMI), blood pressure, chronic diseases and parental education level at baseline, and incident cardiovascular disease before 2020. Moreover, lower muscle strength in late adolescence showed a linear association with a higher risk of all three outcomes when controlled for BMI and height. Conclusions Physical fitness at a young age is associated with severity of COVID-19 many years later. This underscores the necessity to increase the general physical fitness of the population to offer protection against future viral pandemics.
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| 2. |
- Chow, C. K., et al.
(författare)
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Tobacco control environment: cross-sectional survey of policy implementation, social unacceptability, knowledge of tobacco health harms and relationship to quit ratio in 17 low-income, middle-income and high-income countries
- 2017
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Ingår i: Bmj Open. - : BMJ. - 2044-6055. ; 7
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: This study examines in a cross-sectional study 'the tobacco control environment' including tobacco policy implementation and its association with quit ratio. Setting: 545 communities from 17 high-income, upper-middle, low-middle and low-income countries (HIC, UMIC, LMIC, LIC) involved in the Environmental Profile of a Community's Health (EPOCH) study from 2009 to 2014. Participants: Community audits and surveys of adults (35-70 years, n= 12 953). Primary and secondary outcome measures: Summary scores of tobacco policy implementation (cost and availability of cigarettes, tobacco advertising, antismoking signage), social unacceptability and knowledge were associated with quit ratios (former vs ever smokers) using multilevel logistic regression models. Results: Average tobacco control policy score was greater in communities from HIC. Overall 56.1% (306/545) of communities had >2 outlets selling cigarettes and in 28.6% (154/539) there was access to cheap cigarettes (<5cents/cigarette) (3.2% (3/93) in HIC, 0% UMIC, 52.6% (90/171) LMIC and 40.4% (61/151) in LIC). Effective bans (no tobacco advertisements) were in 63.0% (341/541) of communities (81.7% HIC, 52.8% UMIC, 65.1% LMIC and 57.6% LIC). In 70.4% (379/538) of communities, >80% of participants disapproved youth smoking (95.7% HIC, 57.6% UMIC, 76.3% LMIC and 58.9% LIC). The average knowledge score was >80% in 48.4% of communities (94.6% HIC, 53.6% UMIC, 31.8% LMIC and 35.1% LIC). communities in the highest quintile of the combined scores had 5.0 times the quit ratio in men (Odds ratio (OR) 5.0, 95% CI 3.4 to 7.4) and 4.1 times the quit ratio in women (OR 4.1, 95% CI 2.4 to 7.1). Conclusions: This study suggests that more focus is needed on ensuring the tobacco control policy is actually implemented, particularly in LMICs. The gender-related differences in associations of policy, social unacceptability and knowledge suggest that different strategies to promoting quitting may need to be implemented in men compared to women.
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| 3. |
- Dudas, Kerstin, 1963, et al.
(författare)
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Differences between acute myocardial infarction and unstable angina: a longitudinal cohort study reporting findings from the Register of Information and Knowledge about Swedish Heart Intensive Care Admissions (RIKS-HIA)
- 2013
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Ingår i: BMJ open. - : BMJ. - 2044-6055. ; 3:1
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The aim of this study was to compare risk factors and comorbidities in patients with a first episode of acute coronary syndrome (ACS), being either acute myocardial infarction (AMI) or unstable angina pectoris (UAP). DESIGN: Cross-sectional and prospective. SETTING: The Swedish population. PARTICIPANTS: A total of 145 346 consecutive patients aged 25-105 years included in the Swedish Register of Cardiac Intensive Care Admission (Register of Information and Knowledge about Swedish Heart Intensive Care) and admitted to hospital between 1 January 1996 and 30 June 2009 with a first episode of either AMI or UAP. PRIMARY AND SECONDARY OUTCOME MEASURES: Type of ACS and 1-year outcome. RESULTS: Compared with patients with UAP, AMI patients were more likely to be older; men; and former or current smokers; they were also more likely to have had diabetes and peripheral artery disease, but had lower rates of prior heart failure (HF) and fewer cardioprotective medications on admission. Among patients aged <65 years, 1.4% of men and 1.6% of women with UAP died within 1 year in 2003-2006 compared with 4.2% of men and 3.1% of women AMI patients (multiple-adjusted OR 3.54 (99% CI 2.29 to 5.48) in women and 2.65 (99% CI 2.11 to 3.34) in men). Corresponding proportions in patients aged >/=65 years was 7.5% in men and 7.6% in women with UAP and 21.5% in men and 17.8% in women with AMI. CONCLUSIONS: In patients with a first-time ACS episode, male sex, slightly older age, smoking, diabetes and peripheral arterial disease (PAD), but fewer cardioprotective medications, were major determinants for presenting with AMI. Despite increasingly active treatment in AMI and more inclusive diagnostic criteria in recent years, persistently worse prognosis was observed in AMI patients.
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| 4. |
- Eriksson, Helena, 1971, et al.
(författare)
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Longitudinal study of occupational noise exposure and joint effects with job strain and risk for coronary heart disease and stroke in Swedish men.
- 2018
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Ingår i: BMJ open. - : BMJ. - 2044-6055. ; 8:4
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Tidskriftsartikel (refereegranskat)abstract
- The aims were to investigate whether occupational noise increased the risk for coronary heart disease (CHD) and stroke and to elucidate interactions with stressful working conditions in a cohort of Swedish men.This is a prospective cohort study on CHD and stroke in Swedish men followed until death, hospital discharge or until 75 years of age, using Swedish national registers on cause of death and hospital discharges. Baseline data on occupation from 1974 to 1977 were used for classification of levels of occupational noise and job demand-control. Cox regression was used to analyse HRs for CHD and stroke.Swedish men born in 1915-1925.CHD and stroke.The participants of the study were men from the Primary Prevention Study, a random sample of 10 000 men born in 1915-1925 in Gothenburg. Subjects with CHD or stroke at baseline or were not employed were excluded. The remaining subjects with complete baseline data on occupation, weight, height, hypertension, diabetes, serum cholesterol and smoking constituted the study sample (5753 men).There was an increased risk for CHD in relation to noise levels 75-85 dB(A) and >85dB(A) compared with <75dB(A) (HR 1.15, 95% CI 1.01 to 1.31, and HR 1.27, 95% CI 0.99 to 1.63, respectively). Exposure to noise peaks also increased the risk for CHD (HR 1.19, 95%CI 1.03 to 1.38). Among those with high strain (high demands and low control) combined with noise >75dB(A), the risk for CHD further increased (HR 1.80, 95% CI 1.19 to 2.73). There was no significantly increased risk for stroke in any noise category.Exposure to occupational noise was associated with an increased risk for CHD and the risk further increased among those with concomitant exposure to high strain. None of the analysed variables were related to increased risk for stroke.
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| 5. |
- Halford, Christina, et al.
(författare)
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A population-based study of nearly 15 000 observations among Swedish women and men during 1973-2003
- 2012
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Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 2:6
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Tidskriftsartikel (refereegranskat)abstract
- Objectives Global self-rated health (SRH) has become extensively used as an outcome measure in population health surveillance. The aim of this study was to analyse the effects of age and secular trend (year of investigation) on SRH.Design Prospective cohort study, using population-based data from eight ongoing cohort studies, with sampling performed between 1973 and 2003.Setting Sweden.Participants 11 880 women and men, aged 25–99 years, providing 14 470 observations.Primary outcome measure Global SRH.Results In multiple ordinal logistic regression analyses, adjusted for the effects of covariates, there were independent effects of age (p<0.0001) and of year of investigation (p<0.0001) on SRH. In women the association was linear, showing lower levels of SRH with increased age, and more recent year of investigation. In men the association was curvilinear, and thus more complex. The final model explained 76.2% of the SRH variance in women and 74.5% of the variance in men.Conclusions SRH was strongly and inversely associated with age in both sexes, after adjustment for other outcome-affecting variables. There was a strongly significant effect of year of investigation indicating a change in SRH, in women towards lower levels over calendar time, in men with fluctuations across time.
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| 6. |
- Nielsen, Susanne, 1969, et al.
(författare)
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Sex-specific trends in 4-year survival in 37 276 men and women with acute myocardial infarction before the age of 55 years in Sweden, 1987-2006: a register-based cohort study.
- 2014
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Ingår i: BMJ open. - : BMJ. - 2044-6055. ; 4:5
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Tidskriftsartikel (refereegranskat)abstract
- To examine sex-specific trends in 4-year mortality among young patients with first acute myocardial infarction (AMI), 1987-2006. Results From the first to last 5-year period, the absolute excess risk decreased from 1.38 to 0.50 and 1.53 to 0.59 per 100 person-years among men aged 25–44 and 45–54years, respectively. Corresponding figures for women were a decrease from 2.26 to 1.17 and from 1.93 to 1.45 per 100 person-years, respectively. Trends for women were non-linear, decreasing to the same extent as those for men until the third period, then increasing. For the last 5-year period, the standardised mortality ratio for young survivors of AMI compared with the general population was 4.34 (95% CI 3.04 to 5.87) and 2.43 (95% CI 2.12 to 2.76) for men aged 25–44 and 45–54years, respectively, and 13.53 (95% CI 8.36 to 19.93) and 6.42 (95% CI 5.24 to 7.73) for women, respectively. Deaths not associated with cardiovascular causes increased from 21.5% to 44.6% in men and 41.5% to 65.9% in women. Conclusions Young male survivors of AMI have low absolute long-term mortality rates, but these rates remain twofold to fourfold that of the general population. After favourable development until 2001, women now have higher absolute mortality than men and a 6-fold to 14-fold risk of death compared with women in the general population.
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| 7. |
- Nilsson Sommar, Johan, et al.
(författare)
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Long-term exposure to particulate air pollution and black carbon in relation to natural and cause-specific mortality: a multicohort study in Sweden
- 2021
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Ingår i: Bmj Open. - : BMJ. - 2044-6055. ; 11:9
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Tidskriftsartikel (refereegranskat)abstract
- Objectives To estimate concentration-response relationships for particulate matter (PM) and black carbon (BC) in relation to mortality in cohorts from three Swedish cities with comparatively low pollutant levels. Setting Cohorts from Gothenburg, Stockholm and Umea, Sweden. Design High-resolution dispersion models were used to estimate annual mean concentrations of PM with aerodynamic diameter <= 10 mu m (PM10) and <= 2.5 mu m (PM2.5), and BC, at individual addresses during each year of follow-up, 1990-2011. Moving averages were calculated for the time windows 1-5 years (lag1-5) and 6-10 years (lag6-10) preceding the outcome. Cause-specific mortality data were obtained from the national cause of death registry. Cohort-specific HRs were estimated using Cox regression models and then meta-analysed including a random effect of cohort. Participants During the study period, 7 340 cases of natural mortality, 2 755 cases of cardiovascular disease (CVD) mortality and 817 cases of respiratory and lung cancer mortality were observed among in total 68 679 individuals and 689 813 person-years of follow-up. Results Both PM10 (range: 6.3-41.9 mu g/m(3)) and BC (range: 0.2-6.8 mu g/m(3)) were associated with natural mortality showing 17% (95% CI 6% to 31%) and 9% (95% CI 0% to 18%) increased risks per 10 mu g/m(3) and 1 mu g/m(3) of lag1-5 exposure, respectively. For PM2.5 (range: 4.0-22.4 mu g/m(3)), the estimated increase was 13% per 5 mu g/m(3), but less precise (95% CI -9% to 40%). Estimates for CVD mortality appeared higher for both PM10 and PM2.5. No association was observed with respiratory mortality. Conclusion The results support an effect of long-term air pollution on natural mortality and mortality in CVD with high relative risks also at low exposure levels. These findings are relevant for future decisions concerning air quality policies.
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| 8. |
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| 9. |
- Söderberg, Mia, 1977, et al.
(författare)
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Undervalued essential work and lacking health literacy as determinants of COVID-19 infection risks: a qualitative interview study among foreign-born workers in Sweden.
- 2023
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Ingår i: BMJ open. - 2044-6055. ; 13:12
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Tidskriftsartikel (refereegranskat)abstract
- To investigate work and living conditions as determinants of COVID-19 infection risks in foreign-born workers in non-healthcare occupations.Data were collected according to a qualitative design, using semistructured interviews. Verbatim transcripts of these interviews were analysed according to systematic text condensation.We recruited foreign-born workers (n=15) and union representatives (n=6) among taxi drivers, bus and tram drivers, pizza bakers, cleaners and property caretakers, all indicated as risk occupations during COVID-19 in Sweden.Four overarching themes were found: 'virus exposure at work', 'aspects of low status and undervalued work', 'lack of access to information' and 'foreign-born persons' position'. Virus exposure was frequent due to many social interactions over a workday, out of which several were physically close, sometimes to the point of touching. The respondents fulfilled important societal functions, but their work was undervalued due to low job status, and they had little influence on improving safety at work. Lack of health literacy limited foreign-born workers to access information about COVID-19 infection risks and protection, since most information from health organisations and employers was only available in Swedish and not adapted to their living conditions or disseminated through unknown channels. Instead, many turned to personal contacts or social media, through which a lot of misinformation was spread. Foreign-born persons were also subjected to exploitation since a Swedish residency permit could depend on maintaining employment, making it almost impossible to make demands for improved safety at work.Structural factors and a lack of adapted information manifested themselves as fewer possibilities for protection against COVID-19. In a globalised world, new widespread diseases are likely to occur, and more knowledge is needed to protect all workers equally. Our results are transferable to similar contexts and bring forth aspects that can be tried in quantitative studies or public health interventions.Cite Now.
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| 10. |
- Torén, Kjell, 1952, et al.
(författare)
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A longitudinal general population-based study of job strain and risk for coronary heart disease and stroke in Swedish men
- 2014
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Ingår i: Bmj Open. - : BMJ. - 2044-6055. ; 4:3
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Tidskriftsartikel (refereegranskat)abstract
- Objectives The aim was to investigate whether psychosocial stress based on the job-demand-control (JDC) model increased the risk for coronary heart disease (CHD) and stroke. The Primary Prevention Study (PPS) comprises 6070 men born between 1915 and 1925 free from previous history of CHD and stroke at baseline (1974-1977). Psychosocial workplace exposure was assessed using a job-exposure matrix (JEM) for the JDC model based on occupation at baseline. The participants were followed from baseline examination, until death, until hospital discharge or until 75 years of age, whichever occurred first, using the Swedish national register on cause of death and the Swedish hospital discharge register for non-fatal and fatal stroke and CHD events. Cox regression models were used with stroke or CHD as the outcome, using JDC model and age as explanatory variables, as well as stratified models with regard to smoking, self-reported stress, socioeconomic status, obesity, hypertension and diabetes. There was an increased risk (HR) for CHD in relation to high strain (HR 1.31, 95% CI 1.01 to 1.70). The risk was further increased among ever-smokers and among blue-collar workers. There was a relation between low control and increased risk for CHD (HR 1.19, 95% CI 1.06 to 1.35). There was no increased risk for stroke in any of the JDC categories. Exposure to occupational psychosocial stress defined as job strain or low control increased the risk for CHD, especially among smokers and blue-collar workers. There was no increased risk for stroke in any of the JDC categories.
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