Jakob Bue Bjorner

Summary

Affiliation: QualityMetric Incorporated
Country: USA

Publications

  1. ncbi Methodological issues for building item banks and computerized adaptive scales
    David Thissen
    University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
    Qual Life Res 16:109-19. 2007
  2. ncbi The feasibility of applying item response theory to measures of migraine impact: a re-analysis of three clinical studies
    Jakob B Bjorner
    QualityMetric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:887-902. 2003
  3. ncbi Calibration of an item pool for assessing the burden of headaches: an application of item response theory to the headache impact test (HIT)
    Jakob B Bjorner
    QualityMetric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:913-33. 2003
  4. ncbi Developing tailored instruments: item banking and computerized adaptive assessment
    Jakob Bue Bjorner
    QualityMetric Incorporated, 640 George Washington Highway, Suite 201, Lincoln, RI 02865, USA
    Qual Life Res 16:95-108. 2007
  5. ncbi Using item response theory to calibrate the Headache Impact Test (HIT) to the metric of traditional headache scales
    Jakob B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:981-1002. 2003
  6. ncbi Interpreting score differences in the SF-36 Vitality scale: using clinical conditions and functional outcomes to define the minimally important difference
    Jakob B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02865 4207, USA
    Curr Med Res Opin 23:731-9. 2007
  7. ncbi Use of item response theory to develop a shortened version of the EORTC QLQ-C30 emotional functioning scale
    J B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02865, USA
    Qual Life Res 13:1683-97. 2004
  8. ncbi Development and preliminary testing of a computerized adaptive assessment of chronic pain
    Milena D Anatchkova
    QualityMetric Incorporated, Lincoln, Rhode Island, USA
    J Pain 10:932-43. 2009
  9. ncbi An evaluation of a patient-reported outcomes found computerized adaptive testing was efficient in assessing osteoarthritis impact
    Mark Kosinski
    QualityMetric Incorporated, 640 George Washington Highway, Lincoln, RI 02865, USA
    J Clin Epidemiol 59:715-23. 2006
  10. ncbi The Short-Form Headache Impact Test (HIT-6) was psychometrically equivalent in nine languages
    Marie Martin
    QualityMetric Incorporated, 640 George Washington Highway, Lincoln, RI 02865, USA
    J Clin Epidemiol 57:1271-8. 2004

Research Grants

  1. Computerized Adaptive Assessment of Disease Impact
    Jakob Bjorner; Fiscal Year: 2005

Detail Information

Publications16

  1. ncbi Methodological issues for building item banks and computerized adaptive scales
    David Thissen
    University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
    Qual Life Res 16:109-19. 2007
    ....
  2. ncbi The feasibility of applying item response theory to measures of migraine impact: a re-analysis of three clinical studies
    Jakob B Bjorner
    QualityMetric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:887-902. 2003
    ..Item response theory (IRT) is a powerful framework for analyzing multiitem scales and is central to the implementation of computerized adaptive testing...
  3. ncbi Calibration of an item pool for assessing the burden of headaches: an application of item response theory to the headache impact test (HIT)
    Jakob B Bjorner
    QualityMetric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:913-33. 2003
    ..Computerized adaptive testing (CAT) of headache impact has potential advantages over traditional fixed-length tests in terms of precision, relevance, real-time quality control and flexibility...
  4. ncbi Developing tailored instruments: item banking and computerized adaptive assessment
    Jakob Bue Bjorner
    QualityMetric Incorporated, 640 George Washington Highway, Suite 201, Lincoln, RI 02865, USA
    Qual Life Res 16:95-108. 2007
    ..Although medical research can draw upon expertise from educational testing in the development of item banks and CAT, the medical field also encounters unique opportunities and challenges...
  5. ncbi Using item response theory to calibrate the Headache Impact Test (HIT) to the metric of traditional headache scales
    Jakob B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:981-1002. 2003
    ..However, to ensure 'backwards comparability' and to facilitate interpretations of results, we need the ability to express the IRT score in the metrics of the traditional scales...
  6. ncbi Interpreting score differences in the SF-36 Vitality scale: using clinical conditions and functional outcomes to define the minimally important difference
    Jakob B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02865 4207, USA
    Curr Med Res Opin 23:731-9. 2007
    ..To propose the minimally important difference (MID) for the SF-36 Vitality (VT) scale by evaluating the association of score differences with clinical conditions and functional outcomes...
  7. ncbi Use of item response theory to develop a shortened version of the EORTC QLQ-C30 emotional functioning scale
    J B Bjorner
    Quality Metric Incorporated, Lincoln, RI 02865, USA
    Qual Life Res 13:1683-97. 2004
    ....
  8. ncbi Development and preliminary testing of a computerized adaptive assessment of chronic pain
    Milena D Anatchkova
    QualityMetric Incorporated, Lincoln, Rhode Island, USA
    J Pain 10:932-43. 2009
    ..PERSPECTIVE: This report demonstrates that the CHRONIC PAIN-CAT is feasible for administration in a clinic. The application has the potential to improve pain assessment and help clinicians manage chronic pain...
  9. ncbi An evaluation of a patient-reported outcomes found computerized adaptive testing was efficient in assessing osteoarthritis impact
    Mark Kosinski
    QualityMetric Incorporated, 640 George Washington Highway, Lincoln, RI 02865, USA
    J Clin Epidemiol 59:715-23. 2006
    ..Evaluate a patient-reported outcomes questionnaire that uses computerized adaptive testing (CAT) to measure the impact of osteoarthritis (OA) on functioning and well-being...
  10. ncbi The Short-Form Headache Impact Test (HIT-6) was psychometrically equivalent in nine languages
    Marie Martin
    QualityMetric Incorporated, 640 George Washington Highway, Lincoln, RI 02865, USA
    J Clin Epidemiol 57:1271-8. 2004
    ..This study examined the psychometric properties and equivalence of the six-item Headache Impact Test (HIT-6) across 11 languages in 14 countries...
  11. ncbi Applications of computerized adaptive testing (CAT) to the assessment of headache impact
    John E Ware
    QualityMetric Incorporated, Lincoln, RI 02895, USA
    Qual Life Res 12:935-52. 2003
    ..To evaluate the feasibility of computerized adaptive testing (CAT) and the reliability and validity of CAT-based estimates of headache impact scores in comparison with 'static' surveys...
  12. ncbi Item response theory methods can improve the measurement of physical function by combining the modified health assessment questionnaire and the SF-36 physical function scale
    Marie Martin
    QualityMetric Incorporated, 640 George Washington Highway, Suite 201, Lincoln, 02865, RI, USA
    Qual Life Res 16:647-60. 2007
    ....
  13. ncbi Psychological distress and fatigue predicted recurrence and survival in primary breast cancer patients
    Mogens Groenvold
    The Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Bispebjerg Bakke 23, 2400 Copenhagen, Denmark
    Breast Cancer Res Treat 105:209-19. 2007
    ..0074; risk ratio 0.81 (0.70-0.95)). Low psychological distress and a low level of fatigue may cause a greater cancer resistance or may reflect underlying mental and physical robustness...
  14. ncbi Quality of life in patients with benign thyroid disorders. A review
    Torquil Watt
    Department of Endocrinology, Copenhagen University Hospital, Rigshospitalet, Denmark
    Eur J Endocrinol 154:501-10. 2006
    ..Studies systematically exploring the relative importance of these various aspects to thyroid patients are lacking, as is a comprehensive, validated thyroid-specific HRQL questionnaire...
  15. ncbi Which domains of thyroid-related quality of life are most relevant? Patients and clinicians provide complementary perspectives
    Torquil Watt
    Department of Endocrinology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
    Thyroid 17:647-54. 2007
    ..To identify how thyroid diseases impact the patients' lives and to select the most relevant quality of life (QoL) issues for a thyroid-specific questionnaire...
  16. ncbi Improving a newly developed patient-reported outcome for thyroid patients, using cognitive interviewing
    Torquil Watt
    Department of Endocrinology, Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark
    Qual Life Res 17:1009-17. 2008
    ..To improve a newly developed patient-reported outcome measure for thyroid patients using cognitive interviewing...

Research Grants1

  1. Computerized Adaptive Assessment of Disease Impact
    Jakob Bjorner; Fiscal Year: 2005
    ....