• The health related quality of life of people living with HIV/AIDS in sub-Saharan Africa - a literature review and focus group study 

      Robberstad, Bjarne; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
    • Health state utility instruments compared: inquiring into nonlinearity across EQ-5D-5L, SF-6D, HUI-3 and 15D 

      Gamst-Klaussen, Thor; Chen, Gang; Lamu, Admassu Nadew; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-12-21)
      Purpose Different health state utility (HSU) instruments produce different utilities for the same individuals, thereby compromising the intended comparability of economic evaluations of health care interventions. When developing crosswalks, previous studies have indicated nonlinear relationships. This paper inquires into the degree of nonlinearity across the four most widely used HSU-instruments ...
    • How is your life? understanding the relative importance of life domains amongst older adults, and their associations with self-perceived COVID-19 impacts 

      Chen, Gang; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-06)
      Purpose - This study aims to provide new knowledge on the relative importance of key life domains amongst older adults, and how the Coronavirus pandemic has influenced their life (domain) satisfaction.<p> <p>Methods - A cross-sectional survey was administrated to an online panel of the general public aged 65 years and older in Australia from 28 April to 26 May 2020. Life satisfaction was measured ...
    • Improving response rate and quality of survey data with a scratch lottery ticket incentive 

      Olsen, Frank; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The quality of data collected in survey research is usually indicated by the response rate; the representativeness of the sample, and; the rate of completed questions (item-response). In attempting to improve a generally declining response rate in surveys considerable efforts are being made through follow-up mailings and various types of incentives. This study examines effects of including a scratch ...
    • In search of a common currency: A comparison of seven EQ‐5D‐5L value sets 

      Olsen, Jan Abel; Lamu, Admassu Nadew; Cairns, John (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-24)
      The recently published EQ‐5D‐5L value sets from Canada, England, Japan, Korea, the Netherlands, Spain, and Uruguay are compared with an aim to identify any similarities in preference pattern. We identify some striking similarities for Canada, England, the Netherlands, and Spain in terms of (a) the relative importance of the 5 dimensions; (b) the relative utility decrements across the 5 levels; and ...
    • Inequality in quality-adjusted life expectancy by educational attainment in Norway: an observational study 

      Gutacker, Nils; Kinge, Jonas Minet; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-03)
      Background Health inequalities are often assessed in terms of life expectancy or health-related quality of life (HRQoL). Few studies combine both aspects into quality-adjusted life expectancy (QALE) to derive comprehensive estimates of lifetime health inequality. Furthermore, little is known about the sensitivity of estimated inequalities in QALE to diferent sources of HRQoL information. This ...
    • Inequality of opportunity in a land of equal opportunities: The impact of parents' health and wealth on their offspring's quality of life in Norway 

      Berthung, Espen; Gutacker, Nils; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-06)
      Background: The literature on Inequality of opportunity (IOp) in health distinguishes between circumstances that lie outside of own control vs. eforts that – to varying extents – are within one’s control. From the perspective of IOp, this paper aims to explain variations in individuals’ health-related quality of life (HRQoL) by focusing on two separate sets of variables that clearly lie outside ...
    • Ny medikamentell behandling av brystkreft - Adjuvant behandling med trastuzumab ved tidlig stadium av brystkreft 

      Johansen, Karianne; Lønning, Per Eystein; Naume, Bjørn; Norderhaug, Inger Natvig; Norum, Jan; Olsen, Jan Abel; Wist, Erik (Research report; Forskningsrapport, 2006)
      Denne rapporten er første del av et oppdrag fra Sosial- og helsedirektoratet og RHF - fagdirektørene med fokus på effekt og bivirkninger av virkestoffet trastuzumab ved adjuvant behandling av brystkreft. Trastuzumab er ofte omtalt ved produktnavnet Herceptin.
    • Ny medikamentell behandling av brystkreft Adjuvant behandling med trastuzumab ved tidlig stadium av brystkreft - en helseøkonomisk analyse 

      Johansen, Karianne; Wisløff, Torbjørn; Kristiansen, Ivar Sønbø; Lønning, Per Eystein; Naume, Bjørn; Norum, Jan; Norderhaug, Inger Natvig; Olsen, Jan Abel; Wist, Erik (Research report; Forskningsrapport, 2006)
      Denne rapporten er andre del av et oppdrag fra Sosial- og helsedirektoratet og RHF - fagdirektørene med fokus på virkestoffet trastuzumab ved adjuvant behandling av brystkreft. Adjuvant behandling gis i tillegg til hovedbehandlingen (for eksempel kirurgi) for å påvirke eventuelt gjenværende kreftceller hos pasienten. Denne delen av oppdraget vurderer de helseøkonomiske konsekvensene av adjuvant ...
    • Preference Weighting of Health State Values: What Difference Does It Make, and Why? 

      Lamu, Admassu Nadew; Gamst-Klaussen, Thor; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-23)
      Background:<br> Most patient-reported outcome measures apply a simple summary score to assess health-related quality of life, whereby equal weight is normally assigned to each item. In the generic preference-based instruments, utility weighting is essential whereby health state values are estimated through preference elicitation and complex algorithms. <br>Objectives:<br> To examine the extent ...
    • Related variations: A novel approach for detecting patterns of regional variations in healthcare utilisation rates 

      Rudolfsen, Jan Håkon; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-22)
      Regional variations in healthcare utilisation rates are ubiquitous and persistent. In settings where an aggregate national health service budget is allocated primarily on a per capita basis, little regional variation in total healthcare utilisation rates will be observed. However, for specific treatments, large variations in utilisation rates are observed, iymplying a substitution effect at some ...
    • The relative importance of education and health behaviour for health and wellbeing 

      Olsen, Jan Abel; Chen, Gang; Lamu, Admassu Nadew (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-11)
      Background - Indicators of socioeconomic position (SEP) and health behaviours (HB) are widely used predictors of health variations. Their relative importance is hard to establish, because HB takes a mediating role in the link between SEP and health. We aim to provide new knowledge on how SEP and HB are related to health and wellbeing.<p> <p>Methods - The analysis considered 14,713 Norwegians aged ...
    • The relative importance of health, income and social relations for subjective well-being: An integrative analysis 

      Lamu, Admassu Nadew; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-28)
      There is much evidence that health, income and social relationships are important for our well-being, but little evidence on their relative importance. This study makes an integrative analysis of the relative influence of health related quality of life (HRQoL), household income and social relationships for subjective well-being (SWB), where SWB is measured by the first three of the five items on the ...
    • Risk of malnutrition and health-related quality of life in community-living elderly men and women : the Tromsø study. 

      Kvamme, Jan-Magnus; Olsen, Jan Abel; Florholmen, Jon; Jacobsen, Bjarne Koster (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Purpose To explore the association between risk of malnutrition as well as current body mass index (BMI) and health-related quality of life (HRQoL) in elderly men and women from the general population. Methods In a cross-sectional population survey including 1,632 men and 1,654 women aged 65 to 87 years from the municipality of Tromsø, Norway, we assessed HRQoL by using the EuroQol (EQ-5D) ...
    • Role of respondents' education as a mediator and moderator in the association between childhood socio-economic status and later health and wellbeing 

      Sheikh, Mashhood Ahmed; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-11-18)
    • Some methodological issues in economic evaluation in health care 

      Olsen, Jan Abel (Doctoral thesis; Doktorgradsavhandling, 1993)
    • Testing alternative regression models to predict utilities: mapping the QLQ-C30 onto the EQ-5D-5L and the SF-6D 

      Lamu, Admassu Nadew; Olsen, Jan Abel (Journal article; Manuskript; Tidsskriftartikkel; Peer reviewed; Preprint, 2018-09-01)
      <p><i>Purpose</i>: The purpose of the study was to compare alternative statistical techniques to find the best approach for converting QLQ-C30 scores onto EQ-5D-5L and SF-6D utilities, and to estimate the mapping algorithms that best predict these health state utilities.</p> <p><i>Methods</i>: 772 cancer patients described their health along the cancer-specific instrument (QLQ-C30) and two generic ...
    • Violence affects physical and mental health differently: the general population based Tromsø study 

      Friborg, Oddgeir; Emaus, Nina; Rosenvinge, Jan H; Bilden, Unni; Olsen, Jan Abel; Pettersen, Gunn (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-28)
      This general population-based study examined associations between violence and mental health, musculoskeletal pain, and early disability pension. The prevalence and consequences of good vs. poor adjustment (resilience vs vulnerability) following encounters with violence were also examined. Data were based on the sixth wave of the “Tromsø Study” (N=12,981; 65.7% response rate, 53.4% women, M-age=57.5 ...
    • Who keeps on working? The importance of resilience for labour market participation 

      Berthung, Espen; Gutacker, Nils; Friborg, Oddgeir; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
      Background<p> <p>It is widely recognized that individuals’ health and educational attainments, commonly referred to as their human capital, are important determinants for their labour market participation (LMP). What is less recognised is the influence of individuals’ latent resilience traits on their ability to sustain LMP after experiencing an adversity such as a health shock.<p> Aim<p> We ...
    • Who keeps on working? The importance of resilience for labour market participation 

      Berthung, Espen; Gutacker, Nils; Friborg, Oddgeir; Abelsen, Birgit; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-13)
      <p><i>Background -</i> It is widely recognized that individuals’ health and educational attainments, commonly referred to as their human capital, are important determinants for their labour market participation (LMP). What is less recognised is the influence of individuals’ latent resilience traits on their ability to sustain LMP after experiencing an adversity such as a health shock. <p><i>Aim ...