Jakob B Bjorner

Summary

Affiliation: National Research Centre for the Working Environment
Country: Denmark

Publications

  1. doi request reprint Difference in method of administration did not significantly impact item response: an IRT-based analysis from the Patient-Reported Outcomes Measurement Information System (PROMIS) initiative
    Jakob B Bjorner
    QualityMetric, Lincoln, RI, USA
    Qual Life Res 23:217-27. 2014
  2. doi request reprint Evaluating construct validity of the second version of the Copenhagen Psychosocial Questionnaire through analysis of differential item functioning and differential item effect
    Jakob Bue Bjorner
    National Research Centre for the Working Environment, Copenhagen, Denmark
    Scand J Public Health 38:90-105. 2010
  3. pmc 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
  4. ncbi request reprint 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
  5. doi request reprint Distribution of effort-reward imbalance in Denmark and its prospective association with a decline in self-rated health
    Reiner Rugulies
    National Research Centre for the Working Environment, Department of Social Medicine, Institute of Public Health, University of Copenhagen, Denmark
    J Occup Environ Med 51:870-8. 2009
  6. ncbi request reprint 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
  7. ncbi request reprint 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
  8. ncbi request reprint 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
  9. ncbi request reprint 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
  10. doi request reprint Work-related violence and incident use of psychotropics
    Ida E H Madsen
    National Research Centre for the Working Environment, Lersø Parkallé 105, Copenhagen, Denmark
    Am J Epidemiol 174:1354-62. 2011

Collaborators

Detail Information

Publications19

  1. doi request reprint Difference in method of administration did not significantly impact item response: an IRT-based analysis from the Patient-Reported Outcomes Measurement Information System (PROMIS) initiative
    Jakob B Bjorner
    QualityMetric, Lincoln, RI, USA
    Qual Life Res 23:217-27. 2014
    ..To test the impact of method of administration (MOA) on the measurement characteristics of items developed in the Patient-Reported Outcomes Measurement Information System (PROMIS)...
  2. doi request reprint Evaluating construct validity of the second version of the Copenhagen Psychosocial Questionnaire through analysis of differential item functioning and differential item effect
    Jakob Bue Bjorner
    National Research Centre for the Working Environment, Copenhagen, Denmark
    Scand J Public Health 38:90-105. 2010
    ..To evaluate the construct validity of the Copenhagen Psychosocial Questionnaire II (COPSOQ II) by means of tests for differential item functioning (DIF) and differential item effect (DIE)...
  3. pmc 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
    ..Scores estimated from the 2 assessments were highly correlated (r = .89), and both assessments discriminated across pain severity levels (P < .001, RV = .95). Patients' evaluations of the CHRONIC PAIN-CAT were favorable...
  4. ncbi request reprint 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...
  5. doi request reprint Distribution of effort-reward imbalance in Denmark and its prospective association with a decline in self-rated health
    Reiner Rugulies
    National Research Centre for the Working Environment, Department of Social Medicine, Institute of Public Health, University of Copenhagen, Denmark
    J Occup Environ Med 51:870-8. 2009
    ..To analyze the distribution of effort-reward imbalance (ERI) and to investigate its impact on self-rated health in a representative sample of the Danish workforce...
  6. ncbi request reprint 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
    ....
  7. ncbi request reprint 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...
  8. ncbi request reprint 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...
  9. ncbi request reprint 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...
  10. doi request reprint Work-related violence and incident use of psychotropics
    Ida E H Madsen
    National Research Centre for the Working Environment, Lersø Parkallé 105, Copenhagen, Denmark
    Am J Epidemiol 174:1354-62. 2011
    ..Work-related violence is associated with increased risk of clinically pertinent mental health problems. Reducing levels of work-related violence may help to prevent mental disorders in the working population...
  11. doi request reprint A multi-wave study of organizational justice at work and long-term sickness absence among employees with depressive symptoms
    Pernille U Hjarsbech
    National Research Centre for the Working Environment, Lersø Parkallé 105, DK 2100 Copenhagen, Denmark
    Scand J Work Environ Health 40:176-85. 2014
    ..In this study, we investigated whether organizational justice at work - fairness in resolving conflicts and distributing work - prevents risk of LTSA among employees with depressive symptoms...
  12. pmc Psychosocial work environment factors and weight change: a prospective study among Danish health care workers
    Helle Gram Quist
    National Research Centre for the Working Environment, Lersoe Parkalle 105, 2100, Copenhagen, Denmark
    BMC Public Health 13:43. 2013
    ..This study aims to investigate psychosocial factors outside the classical work stress models as potential predictors of change in body mass index (BMI) in a population of health care workers...
  13. doi request reprint Benchmarks for interpretation of score differences on the SF-36 health survey for patients with diabetes
    Jakob B Bjorner
    QualityMetric OptumInsight, Lincoln, RI, USA Department of Public Health, University of Copenhagen, Copenhagen, Denmark Electronic address
    Value Health 16:993-1000. 2013
    ..To estimate clinical and social benchmarks for interpretation of score differences on the Short-Form 36 Health Survey, and apply these benchmarks to populations with diabetes mellitus (DM)...
  14. ncbi request reprint 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...
  15. ncbi request reprint 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...
  16. doi request reprint Effect of the Danish return-to-work program on long-term sickness absence: results from a randomized controlled trial in three municipalities
    Otto M Poulsen
    National Research Centre for the Working Environment, Lersø Parkallé 105, DK 2100 Copenhagen, Denmark
    Scand J Work Environ Health 40:47-56. 2014
    ..The aim of this study was to evaluate the effect of the Danish return-to-work (RTW) program on long-term sickness absence in a randomized controlled trial in three municipalities...
  17. ncbi request reprint Multidimensional computerized adaptive testing of the EORTC QLQ-C30: basic developments and evaluations
    Morten Aa Petersen
    The Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, DK 2400, Copenhagen, NV, Denmark
    Qual Life Res 15:315-29. 2006
    ..However, many HRQOL domains are highly correlated. Multidimensional CAT may utilize these correlations to improve measurement efficiency. We investigated the possible advantages and difficulties of multidimensional CAT...
  18. ncbi request reprint 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...
  19. ncbi request reprint Trends in the Danish work environment in 1990-2000 and their associations with labor-force changes
    Hermann Burr
    National Institute of Occupational Health, Copenhagen, Denmark
    Scand J Work Environ Health 29:270-9. 2003
    ..The aims of this study were (i) to describe the trends in the work environment in 1990-2000 among employees in Denmark and (ii) to establish whether these trends were attributable to labor-force changes...