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Sökning: WFRF:(Bergström Annika 1964)

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  • Bjork, J., et al. (författare)
  • Predicting participation in the population-based Swedish cardiopulmonary bio-image study (SCAPIS) using register data
  • 2017
  • Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications. - 1403-4948. ; 45, s. 45-49
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: To illustrate the importance of access to register data on determinants and predictors of study participation to assess validity of population-based studies. In the present investigation, we use data on sociodemographic conditions and disease history among individuals invited to the Swedish cardiopulmonary bio-image study (SCAPIS) in order to establish a model that predicts study participation. Methods: The pilot study of SCAPIS was conducted within the city of Gothenburg, Sweden, in 2012, with 2243 invited individuals (50% participation rate). An anonymous data set for the total target population (n = 24,502) was made available by register authorities (Statistics Sweden and the National Board of Health and Welfare) and included indicators of invitation to and participation in SCAPIS along with register data on residential area, sociodemographic variables, and disease history. Propensity scores for participation were estimated using logistic regression. Results: Residential area, country of birth, civil status, education, occupational status, and disposable income were all associated with participation in multivariable models. Adding data on disease history only increased overall classification ability marginally. The associations with disease history were diverse with some disease groups negatively associated with participation whereas some others tended to increase participation. Conclusions: The present investigation stresses the importance of a careful consideration of selection effects in population-based studies. Access to detailed register data also for non-participants can in the statistical analysis be used to control for selection bias and enhance generalizability, thereby making the results more relevant for policy decisions.
  • Torén, Kjell, 1952, et al. (författare)
  • Measures of bronchodilator response of FEV1, FVC and SVC in a Swedish general population sample aged 50-64 years, the SCAPIS Pilot Study
  • 2017
  • Ingår i: International Journal of Chronic Obstructive Pulmonary Disease. - : DOVE MEDICAL PRESS LTD. - 1178-2005 .- 1176-9106. ; 12, s. 973-980
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Data are lacking from general population studies on how to define changes in lung function after bronchodilation. This study aimed to analyze different measures of bronchodilator response of forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and slow vital capacity (SVC). Materials and methods: Data were derived from the Swedish Cardiopulmonary Bioimage Study (SCAPIS) Pilot study. This analysis comprised 1,050 participants aged 50-64 years from the general population. Participants were investigated using a questionnaire, and FEV1, FVC and SVC were recorded before and 15 minutes after inhalation of 400 mu g of salbutamol. A bronchodilator response was defined as the relative change from baseline value expressed as the difference in units of percent predicted normal. Predictors of bronchodilator responses were assessed using multiple linear regression models. Airway obstruction was defined as FEV1/FVC ratio below lower limit of normal (LLN) before bronchodilation, and COPD was defined as an FEV1/FVC ratio below LLN after bronchodilation. Physician-diagnosed asthma was defined as an affirmative answer to " Have you ever had asthma diagnosed by a physician?". Asymptomatic never-smokers were defined as those not reporting physician-diagnosed asthma, physician-diagnosed COPD or emphysema, current wheeze or chronic bronchitis and being a lifelong never-smoker. Results: Among all subjects, the greatest bronchodilator responses (FEV1, FVC and SVC) were found in subjects with asthma or COPD. The upper 95th percentile of bronchodilator responses in asymptomatic never-smokers was 8.7% for FEV1, 4.2% for FVC and 5.0% for SVC. The bronchodilator responses were similar between men and women. In a multiple linear regression model comprising all asymptomatic never-smokers, the bronchodilator response of FEV1 was significantly associated with airway obstruction and height. Conclusion: When the bronchodilator response in asymptomatic never-smokers is reported as the difference in units of predicted normal, significant reversibility of FEV1, FVC and SVC to bronchodilators is 9%, 4% and 5%, respectively.
  • Bergström, Annika, 1964, et al. (författare)
  • Benificial yet crappy: Journalists and audiences on obstacles and opportunities in reader comments
  • 2015
  • Ingår i: European Journal of Communication. - 0267-3231. ; 30:2, s. 137-151
  • Tidskriftsartikel (refereegranskat)abstract
    • Reader comments have been a growing part of user-generated content on news sites for some 10 years now. Although activity is still relatively low, interest among the public is generally high; however, journalists still show a general resistance to audience participation. The aim of our study is to examine attitudes to reader comments from two different perspectives: the public’s and the journalists’. The findings derive from one Swedish survey from each group, both of which had a response rate of about 60%. The main result shows that a large proportion of the public does not have any opinion on reader comments, but when they do, support is widespread. Furthermore, journalists have stronger opinions and are rather critical towards reader comments.
  • Bergström, Annika, 1964-, et al. (författare)
  • Det skånska medielandskapet 2001
  • 2002
  • Ingår i: Efter Arbetet. Synen på nedläggningen och dess konsekvenser. - Göteborg : Inst för journalistik och masskommunikation, Göteborgs universitet.
  • Bokkapitel (övrigt vetenskapligt)
  • Bergström, Annika, 1964-, et al. (författare)
  • Ett år senare.
  • 2002
  • Ingår i: Efter Arbetet. Synen på nedläggningen och dess konskvenser.. - Göteborg : Inst för journalistik och masskommunikation, Göteborgs universitet.
  • Bokkapitel (övrigt vetenskapligt)
  • Bergström, Annika, 1964-, et al. (författare)
  • Internet i Mediesverige
  • 1999
  • Ingår i: MedieSverige 1999. - Göteborg : Nordicom-Sverige.
  • Bokkapitel (övrigt vetenskapligt)
  • Bergström, Annika, 1964-, et al. (författare)
  • Introduktion till en 25-åring
  • 2005
  • Ingår i: Nypressat. Ett kvartssekel med svenska dagstidningsläsare.. - Göteborg : SOM-institutet.
  • Bokkapitel (övrigt vetenskapligt)
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