• Amplified disparities: The association between spousal education and own health 

      Lamu, Admassu Nadew; Chen, Gang; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-11)
      Positive associations between own educational attainment and own health have been extensively documented. Studies have also shown spousal educational attainment to be associated with own health. This paper investigates the extent to which spousal education contributes to the social gradient in health, net of own education; and whether parts of a seeming spousal education effect are attributable to ...
    • Assessment of outcome measures for cost–utility analysis in depression: mapping depression scales onto the EQ-5D-5L 

      Gamst-Klaussen, Thor; Lamu, Admassu N.; Chen, Gang; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-13)
      <i>Background:</i> Many clinical studies including mental health interventions do not use a health state utility instrument, which is essential for producing quality-adjusted life years. In the absence of such utility instrument, mapping algorithms can be applied to estimate utilities from a disease-specific instrument.<p> <p><i>Aims:</i> We aim to develop mapping algorithms from two widely used ...
    • Associations between utilization rates and patients’ health: a study of spine surgery and patient-reported outcomes (EQ-5D and ODI) 

      Rudolfsen, Jan Håkon; Solberg, Tore; Ingebrigtsen, Tor; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-22)
      <i>Background</i> - A vast body of literature has documented regional variations in healthcare utilization rates. The extent to which such variations are “unwarranted” critically depends on whether there are corresponding variations in patients’ needs. Using a unique medical registry, the current paper investigated any associations between utilization rates and patients’ needs, as measured by two ...
    • Clarifying Associations between Childhood Adversity, Social Support, Behavioral Factors, and Mental Health, Health, and Well-Being in Adulthood: A Population-Based Study 

      Sheikh, Mashhood Ahmed; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-25)
      Previous studies have shown that socio-demographic factors, childhood socioeconomic status (CSES), childhood traumatic experiences (CTEs), social support and behavioral factors are associated with health and well-being in adulthood. However, the relative importance of these factors for mental health, health, and well-being has not been studied. Moreover, the mechanisms by which CTEs affect mental ...
    • Combining education and income into a socioeconomic position score for use in studies of health inequalities 

      Lindberg, Marie Hella; Chen, Gang; Olsen, Jan Abel; Abelsen, Birgit (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-13)
      Background: In studies of social inequalities in health, there is no consensus on the best measure of socioeconomic position (SEP). Moreover, subjective indicators are increasingly used to measure SEP. The aim of this paper was to develop a composite score for SEP based on weighted combinations of education and income in estimating subjective SEP, and examine how this score performs in predicting ...
    • A conceptual map of health-related quality of life dimensions: key lessons for a new instrument 

      Olsen, Jan Abel; Misajon, RoseAnne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-01)
      <i>Purpose</i> - Quality-adjusted life years (QALYs) represent a critical metric in economic evaluations impacting key healthcare decisions in many countries. However, there is widespread disagreement as to which is the best of the health state utility (HSU) instruments that are designed to measure the Q in the QALY. Instruments differ in their descriptive systems as well as their valuation ...
    • Cost-Effectiveness of Telemedicine in Remote Orthopedic Consultations: Randomized Controlled Trial 

      Buvik, Astrid Synnøve; Bergmo, Trine Strand; Bugge, Einar; Småbrekke, Arvid; Wilsgaard, Tom; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-19)
      <p><i>Background</i>: Telemedicine consultations using real-time videoconferencing has the potential to improve access and quality of care, avoid patient travels, and reduce health care costs.</p> <p><i>Objective</i>: The aim of this study was to examine the cost-effectiveness of an orthopedic videoconferencing service between the University Hospital of North Norway and a regional medical center ...
    • Differential Recall Bias, Intermediate Confounding, and Mediation Analysis in Life Course Epidemiology: An Analytic Framework with Empirical Example 

      Sheikh, Mashhood Ahmed; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-23)
      The mechanisms by which childhood socioeconomic status (CSES) affects adult mental health, general health, and well-being are not clear. Moreover, the analytical assumptions employed when assessing mediation in social and psychiatric epidemiology are rarely explained. The aim of this paper was to explain the intermediate confounding assumption, and to quantify differential recall bias in the association ...
    • Differential Recall Bias, Intermediate Confounding, and Mediation Analysis in Life Course Epidemiology: An Analytic Framework with Empirical Example 

      Sheikh, Mashhood Ahmed; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-23)
      The mechanisms by which childhood socioeconomic status (CSES) affects adult mental health, general health, and well-being are not clear. Moreover, the analytical assumptions employed when assessing mediation in social and psychiatric epidemiology are rarely explained. The aim of this paper was to explain the intermediate confounding assumption, and to quantify differential recall bias in the ...
    • Do country-specific preference weights matter in the choice of mapping algorithms? The case of mapping the Diabetes-39 onto eight country-specific EQ-5D-5L value sets 

      Lamu, Admassu Nadew; Chen, Gang; Gamst-Klaussen, Thor; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-22)
      <p><i>Purpose</i>: To develop mapping algorithms that transform Diabetes-39 (D-39) scores onto EQ-5D-5L utility values for each of eight recently published country-specific EQ-5D-5L value sets, and to compare mapping functions across the EQ-5D-5L value sets.</p> <p><i>Methods</i>: Data include 924 individuals with self-reported diabetes from six countries. The D-39 dimensions, age and gender ...
    • Does an activity based remuneration system attract young doctors to general practice? 

      Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The use of increasingly complex payment schemes in primary care may represent a barrier to recruiting general practitioners (GP). The existing Norwegian remuneration system is fully activity based - 2/3 fee-for-service and 1/3 capitation. Given that the system has been designed and revised in close collaborations with the medical association, it is likely to correspond - at least to some degree - ...
    • Education and health and well-being: direct and indirect effects with multiple mediators and interactions with multiple imputed data in Stata 

      Sheikh, Mashhood Ahmed; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-12)
      <p><i>Background</i>: Previous methods for assessing mediation assume no multiplicative interactions. The inverse odds weighting (IOW) approach has been presented as a method that can be used even when interactions exist. The substantive aim of this study was to assess the indirect effect of education on health and well-being via four indicators of adult socioeconomic status (SES): income, management ...
    • Estimating QUALY gains in applied studies: A review of cost-utility analyses published in 2010 

      Wisløff, Torbjørn; Hagen, Gunhild; Hamidi, Vida; Movik, Espen; Klemp, Marianne; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Explaining subjective social status in two countries: The relative importance of education, occupation, income and childhood circumstances 

      Lindberg, Marie Hella; Chen, Gang; Olsen, Jan Abel; Abelsen, Birgit (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-03)
      In the literature on social inequalities in health, subjective socioeconomic position (SEP) is increasingly applied as a determinant of health, motivated by the hypothesis that having a high subjective SEP is health-enhancing. However, the relative importance of determinants of subjective SEP is not well understood. Objective SEP indicators, such as education, occupation and income, are assumed to ...
    • Exploring the causal and effect nature of EQ-5D dimensions: an application of confirmatory tetrad analysis and confirmatory factor analysis 

      Gamst-Klaussen, Thor; Gudex, Claire; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-31)
      <p><i>Background</i>: The relationship between the various items in an HRQoL instrument is a key aspect of interpreting and understanding preference weights. The aims of this paper were i) to use theoretical models of HRQoL to develop a conceptual framework for causal and effect relationships among the five dimensions of the EQ-5D instrument, and ii) to empirically test this framework.</p> ...
    • Extending the EQ-5D: the case for a complementary set of 4 psycho-social dimensions 

      Chen, Gang; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-20)
      Objectives - The EQ-5D is the most widely applied preference-based health-related quality of life measure. However, concerns have been raised that the existing dimensional structure lacks sufficient components of mental and social aspects of health. This study empirically explored the performance of a coherent set of four psycho-social bolt-ons: Vitality; Sleep; Personal relationships; and Social ...
    • Filling the psycho-social gap in the EQ-5D: the empirical support for four bolt-on dimensions 

      Chen, Gang; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-09)
      <i>Purpose</i> - The EQ-5D is the most widely applied generic preference-based measure (GPBM) of health-related quality of life (HRQoL). Much concern has been raised that its descriptive system is lacking psycho-social dimensions. A recent paper in this journal provided theoretical support for four dimensions to fill this gap. The current paper aims to provide empirical support for these suggested ...
    • General practitioners’ altered preferences for private practice vs. salaried positions: a consequence of proposed policy regulations? 

      Holte, Jon Helgheim; Abelsen, Birgit; Halvorsen, Peder Andreas; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-25)
      Background: General practitioners (GPs) in most high-income countries have a history of being independent private providers with much autonomy. While GPs remain private providers, their autonomous position appears to be challenged by increased policy regulations. This paper examines the extent to which GPs’ preferences for private practice vs. salaried contracts changed in a period where a new ...
    • Health and wellbeing in Norway: Population norms and the social gradient 

      Olsen, Jan Abel; Lindberg, Marie Hella; Lamu, Admassu Nadew (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-03)
      Measures of health-related quality of life are important in health technology assessments, and useful when analysing health inequalities across population sub-groups. This paper provides population norms on health and wellbeing in Norway based on two waves of a comprehensive health survey: Wave 6 of The Tromsø Study conducted in 2007/08 (N = 12,981) and Wave 7 conducted in 2015/16 (N = 21,083). By ...
    • Health Economics and Radium-223 (Xofigo®) in the Treatment of Metastatic Castration-Resistant Prostate Cancer (mCRPC): A Case History and a Systematic Review of the Literature 

      Norum, Jan; Traasdahl, Erik R.; Totth, Arpad; Nieder, Carsten; Olsen, Jan Abel (Journal article; Peer reviewed; Tidsskriftartikkel, 2015)
      OBJECTIVES: Prostate cancer (PC) is the most common cancer in Western countries. Recent advances in the treatment of metastatic castration resistant prostate cancer (mCRPC) have caused significant pressure on health care budgets. We aimed to exemplify this dilemma presenting an example, radium-223 (Xofigo®), and review the literature. METHODS: A 74-year-old man diagnosed with mCRPC was referred ...