Blar i forfatter "Lamu, Admassu Nadew"

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    • 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 ...

    • 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 the EQ-5D usual activities dimension measure what it intends to measure? The relative importance of work, study, housework, family or leisure activities 

      Gamst-Klaussen, Thor; Lamu, Admassu Nadew (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-23)
      <i>Background</i> - The EQ-5D is the most widely used generic preference-based health-related quality of life measure. It comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. The usual activities dimension asks respondents to evaluate the severity of problems in their usual activities, such as work, study, housework, family or leisure activities. ...

    • 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 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 ...

    • 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 ...

    • Is amalgam removal in patients with medically unexplained physical symptoms cost-effective? A prospective cohort and modelling study in Norway 

      Lamu, Admassu Nadew; Björkman, Lars; Hamre, Harald Johan; Alræk, Terje; Musial, Frauke; Robberstad, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-29)
      There are many patients in general practice with health complaints that cannot be medically explained. Some of these patients attribute their health complaints to dental amalgam restorations. This study examined the cost-effectiveness of the removal of amalgam restorations in patients with medically unexplained physical symptoms (MUPS) attributed to amalgam fillings compared to usual care, based ...

    • 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 ...

    • 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 ...

    • 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 ...

    • Three Essays on Subjective Well-being and Preference-Weighted Health 

      Lamu, Admassu Nadew (Doctoral thesis; Doktorgradsavhandling, 2018-01-25)
      This thesis aims to: i) explore the importance of preference-weighting in health state utility (HSU) instruments and ii) examine the contribution of policy-relevant factors to subjective well-being (SWB). The analyses herein are based on an international sample of individuals aged 18 and above, and this thesis comprises three papers. Paper 1 examined the relative importance of preference-weighting ...

    • Validity and responsiveness of GHC-index in patients with amalgam-attributed health complaints 

      Lamu, Admassu Nadew; Robberstad, Bjarne; Hamre, Harald Johan; Alræk, Terje; Musial, Frauke; Björkman, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-15)
      Objective - Many patients have medically unexplained physical symptoms (MUPS); some of them attribute their health complaints to dental amalgam fillings. The aim of this study was to assess the validity and responsiveness of General Health Complaints index (GHC-index) for measuring the symptom load in MUPS patients compared to the widely used symptom outcome measure, Giessen Subjective Complaints ...

    • Validity and responsiveness of GHC-index in patients with amalgam-attributed health complaints 

      Lamu, Admassu Nadew; Robberstad, Bjarne; Hamre, Harald J.; Alræk, Terje; Musial, Frauke; Björkman, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-15)
      <p><b> Objective</b> Many patients have medically unexplained physical symptoms (MUPS); some of them attribute their health complaints to dental amalgam fillings. The aim of this study was to assess the validity and responsiveness of General Health Complaints index (GHC-index) for measuring the symptom load in MUPS patients compared to the widely used symptom outcome measure, Giessen Subjective ...

    • Yes, health is important, but as much for its importance via social life: The direct and indirect effects of health on subjective well‐being in chronically ill individuals 

      Lamu, Admassu Nadew; Olsen, Jan Abel (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-29)
      There is an increasing evidence that health‐related quality of life, income, and social relationships are important to our subjective well‐being (SWB). Little is known, however, about the specific indirect pathways that link health to SWB via social relationships and income. On the basis of a unique data set of 7 disease groups from 6 OECD‐countries (N = 6,173), we investigate the direct and indirect ...