Health-related quality of life in early rheumatoid arthritis: impact of disease and treatment responseMark Kosinski
QualityMetric, Inc, Lincoln, RI 02865, USA
Am J Manag Care 8:231-40. 2002
..To document the burden of early rheumatoid arthritis (RA) on health-related quality of life (HQL) and compare changes in HQL across 2 treatments...
Development and preliminary testing of a computerized adaptive assessment of chronic painMilena 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...
- 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
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Psychometric testing and validation of the Chronic Pain Sleep InventoryMark Kosinski
Quality Metric, Inc, Lincoln, Rhode Island 02865, USA
Clin Ther 29:2562-77. 2007
..Patients with chronic pain often experience significant disruptions in sleep. A potential benefit of treatment aimed at pain relief is improved quality of sleep in patients with chronic pain...
- 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...
- Validation of the Headache Impact Test (HIT-6™) across episodic and chronic migraine
Min Yang
QualityMetric, Inc, 24 Albion Road, Lincoln, RI 02865 4207, USA
Cephalalgia 31:357-67. 2011
..The purpose of this study was to assess psychometric properties of the six-item Headache Impact Text (HIT-6™) across episodic and chronic migraine...
- Usefulness of the SF-8 Health Survey for comparing the impact of migraine and other conditions
Diane M Turner-Bowker
QualityMetric Incorporated, Lincoln, RI, USA
Qual Life Res 12:1003-12. 2003
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- 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...
- 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...
- 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...
- Evaluating the efficacy of sequential biologic therapies for rheumatoid arthritis patients with an inadequate response to tumor necrosis factor-α inhibitors
Regina Rendas-Baum
QualityMetric Inc, Outcomes Insight Consulting Division, 24 Albion Road, Lincoln, RI 02865, USA
Arthritis Res Ther 13:R25. 2011
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- Use of patient-reported sleep measures in clinical trials of pain treatment: a literature review and synthesis of current sleep measures and a conceptual model of sleep disturbance in pain
Jason C Cole
QualityMetric, Inc, Lincoln, Rhode Island 02865, USA
Clin Ther 29:2580-8. 2007
..In addition, there are no explicit guidelines to suggest which of the existing self-reported measures of sleep disorders best capture the sleep disorders pertinent to patients with chronic pain...
- Pain relief and pain-related sleep disturbance with extended-release tramadol in patients with osteoarthritis
Mark Kosinski
QualityMetric Incorporated, Lincoln, RI, USA
Curr Med Res Opin 23:1615-26. 2007
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- Mapping MOS Sleep Scale scores to SF-6D utility index
Min Yang
QualityMetric Incorporated, 640 George Washington Highway, Lincoln, RI 02865, USA
Curr Med Res Opin 23:2269-82. 2007
..The objective of this study was to map scores of the MOS Sleep Scale to a preference-based health-state utility index (SF-6D) scored from the SF-36 Health Survey (SF-36)...
- Comparability of the Asthma Control Test telephone interview administration format with self-administered mail-out mail-back format
Mark Kosinski
QualityMetric, Inc, Lincoln, RI 02865, USA
Curr Med Res Opin 25:717-27. 2009
..Lastly, the ability of ACT scores to discriminate between self-reported asthma severity was compared between the AFs using ANOVA...
- 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...
- Treatment of rheumatoid arthritis patients with abatacept and methotrexate significantly improved health-related quality of life
Paul Emery
Rheumatology and Rehabilitation Research Unit, University of Leeds, UK
J Rheumatol 33:681-9. 2006
..This study examined the effect of abatacept, a costimulation modulator, on the health-related quality of life (HRQOL) of patients with rheumatoid arthritis (RA)...
- Validity of the Asthma Control Test completed at home
Michael Schatz
Department of Allergy, Kaiser Permanente, San Diego, Calif, USA
Am J Manag Care 13:661-7. 2007
..To provide additional validity data for the Asthma Control TestTM (ACT) using a different criterion measure, setting, and population...
