Improving the evaluation of therapeutic interventions in multiple sclerosis: the role of new psychometric methods.

OBJECTIVES In this monograph we examine the added value of new psychometric methods (Rasch measurement and Item Response Theory) over traditional psychometric approaches by comparing and contrasting their psychometric evaluations of existing sets of rating scale data. We have concentrated on Rasch measurement rather than Item Response Theory because we believe that it is the more advantageous method for health measurement from a conceptual, theoretical and practical perspective. Our intention is to provide an authoritative document that describes the principles of Rasch measurement and the practice of Rasch analysis in a clear, detailed, non-technical form that is accurate and accessible to clinicians and researchers in health measurement. REVIEW METHODS A comparison was undertaken of traditional and new psychometric methods in five large sets of rating scale data: (1) evaluation of the Rivermead Mobility Index (RMI) in data from 666 participants in the Cannabis in Multiple Sclerosis (CAMS) study; (2) evaluation of the Multiple Sclerosis Impact Scale (MSIS-29) in data from 1725 people with multiple sclerosis; (3) evaluation of test-retest reliability of MSIS-29 in data from 150 people with multiple sclerosis; (4) examination of the use of Rasch analysis to equate scales purporting to measure the same health construct in 585 people with multiple sclerosis; and (5) comparison of relative responsiveness of the Barthel Index and Functional Independence Measure in data from 1400 people undergoing neurorehabilitation. RESULTS Both Rasch measurement and Item Response Theory are conceptually and theoretically superior to traditional psychometric methods. Findings from each of the five studies show that Rasch analysis is empirically superior to traditional psychometric methods for evaluating rating scales, developing rating scales, analysing rating scale data, understanding and measuring stability and change, and understanding the health constructs we seek to quantify. CONCLUSIONS There is considerable added value in using Rasch analysis rather than traditional psychometric methods in health measurement. Future research directions include the need to reproduce our findings in a range of clinical populations, detailed head-to-head comparisons of Rasch analysis and Item Response Theory, and the application of Rasch analysis to clinical practice.

[1]  Jeremy C Hobart,et al.  Rating scales as outcome measures for clinical trials in neurology: problems, solutions, and recommendations , 2007, The Lancet Neurology.

[2]  N. Campbell.  Physics: The Elements , 2007 .

[3]  D. Symmons,et al.  A comparison of the cost-effectiveness of five strategies for the prevention of non-steroidal anti-inflammatory drug-induced gastrointestinal toxicity: a systematic review with economic modelling. , 2006, Health technology assessment.

[4]  S. Paisley,et al.  Psychological therapies including dialectical behaviour therapy for borderline personality disorder: a systematic review and preliminary economic evaluation. , 2006, Health technology assessment.

[5]  E. Kaltenthaler,et al.  COMPUTERISED COGNITIVE BEHAVIOUR THERAPY FOR DEPRESSION AND ANXIETY , 2002 .

[6]  A. Thompson,et al.  Talking the talk on walking the walk , 2006, Journal of Neurology.

[7]  Jennifer A. Roberts,et al.  Health benefits of antiviral therapy for mild chronic hepatitis C: randomised controlled trial and economic evaluation. , 2006, Health technology assessment.

[8]  R. Murray,et al.  Randomised controlled trials of conventional antipsychotic versus new atypical drugs, and new atypical drugs versus clozapine, in people with schizophrenia responding poorly to, or intolerant of, current drug treatment. , 2006, Health technology assessment.

[9]  R. Hughes,et al.  Clinimetric properties of a walking scale in peripheral neuropathy , 2006, Journal of Neurology, Neurosurgery & Psychiatry.

[10]  S. Finfer.  SAFE (The Saline versus Albumin Fluid Evaluation) 試験 , 2006 .

[11]  M. Pitt,et al.  Surveillance of Barrett's oesophagus: exploring the uncertainty through systematic review, expert workshop and economic modelling. , 2006, Health technology assessment.

[12]  Stephen Palmer,et al.  Topotecan, pegylated liposomal doxorubicin hydrochloride and paclitaxel for second-line or subsequent treatment of advanced ovarian cancer: a systematic review and economic evaluation. , 2006, Health technology assessment.

[13]  J. Hobart,et al.  Measuring quality of life in multiple sclerosis: not as simple as it sounds , 2005, Multiple sclerosis.

[14]  C. Clar,et al.  Clinical and cost-effectiveness of autologous chondrocyte implantation for cartilage defects in knee joints: systematic review and economic evaluation. , 2005, Health technology assessment.

[15]  C. Bull,et al.  Newborn screening for congenital heart defects: a systematic review and cost-effectiveness analysis. , 2005, Health technology assessment.

[16]  M. Pitt,et al.  The effectiveness and cost-effectiveness of dual-chamber pacemakers compared with single-chamber pacemakers for bradycardia due to atrioventricular block or sick sinus syndrome: systematic review and economic evaluation. , 2005, Health technology assessment.

[17]  M. Sculpher,et al.  Is hydrotherapy cost-effective? A randomised controlled trial of combined hydrotherapy programmes compared with physiotherapy land techniques in children with juvenile idiopathic arthritis. , 2005, Health technology assessment.

[18]  D. Symmons,et al.  The British Rheumatoid Outcome Study Group (BROSG) randomised controlled trial to compare the effectiveness and cost-effectiveness of aggressive versus symptomatic therapy in established rheumatoid arthritis. , 2005, Health technology assessment.

[19]  D. Lamping,et al.  An evaluation of the costs, effectiveness and quality of renal replacement therapy provision in renal satellite units in England and Wales. , 2005, Health technology assessment.

[20]  R Garside,et al.  The effectiveness and cost-effectiveness of pimecrolimus and tacrolimus for atopic eczema: a systematic review and economic evaluation. , 2005, Health technology assessment.

[21]  D G Altman,et al.  Indirect comparisons of competing interventions. , 2005, Health technology assessment.

[22]  Denny Borsboom,et al.  Measuring the Mind: Relations between the models , 2005 .

[23]  J Raftery,et al.  Clinical and cost-effectiveness of newer immunosuppressive regimens in renal transplantation: a systematic review and modelling study. , 2005, Health technology assessment.

[24]  M Sculpher,et al.  Clinical effectiveness, tolerability and cost-effectiveness of newer drugs for epilepsy in adults: a systematic review and economic evaluation. , 2005, Health technology assessment.

[25]  C Fraser,et al.  Laparoscopic surgery for inguinal hernia repair: systematic review of effectiveness and economic evaluation. , 2005, Health technology assessment.

[26]  C. Beverley,et al.  Clinical and cost-effectiveness of electroconvulsive therapy for depressive illness, schizophrenia, catatonia and mania: systematic reviews and economic modelling studies. , 2005, Health technology assessment.

[27]  P Barton,et al.  Cervical screening programmes: can automation help? Evidence from systematic reviews, an economic analysis and a simulation modelling exercise applied to the UK. , 2005, Health technology assessment.

[28]  M Knapp,et al.  Measurement of health-related quality of life for people with dementia: development of a new instrument (DEMQOL) and an evaluation of current methodology. , 2005, Health technology assessment.

[29]  A. Grant,et al.  Improving the referral process for familial breast cancer genetic counselling: findings of three randomised controlled trials of two interventions. , 2005, Health technology assessment.

[30]  C. Fowler,et al.  Randomised evaluation of alternative electrosurgical modalities to treat bladder outflow obstruction in men with benign prostatic hyperplasia. , 2005, Health technology assessment.

[31]  P Wainwright,et al.  Virtual outreach: a randomised controlled trial and economic evaluation of joint teleconferenced medical consultations. , 2004, Health technology assessment.

[32]  A. Silman,et al.  Supplementation of a home-based exercise programme with a class-based programme for people with osteoarthritis of the knees: a randomised controlled trial and health economic analysis. , 2004, Health technology assessment.

[33]  S. Ebrahim,et al.  Provision, uptake and cost of cardiac rehabilitation programmes: improving services to under-represented groups. , 2004, Health technology assessment.

[34]  N. Waugh,et al.  Pegylated interferon alpha-2a and -2b in combination with ribavirin in the treatment of chronic hepatitis C: a systematic review and economic evaluation. , 2004, Health technology assessment.

[35]  M Sculpher,et al.  Clopidogrel used in combination with aspirin compared with aspirin alone in the treatment of non-ST-segment-elevation acute coronary syndromes: a systematic review and economic evaluation. , 2004, Health technology assessment.

[36]  C. Polman,et al.  Multiple Sclerosis Impact Scale (MSIS-29): relation to established measures of impairment and disability , 2004, Multiple sclerosis.

[37]  A Haycox,et al.  Coronary artery stents: a rapid systematic review and economic evaluation. , 2004, Health technology assessment.

[38]  M. Mugford,et al.  The Social Support and Family Health Study: a randomised controlled trial and economic evaluation of two alternative forms of postnatal support for mothers living in disadvantaged inner-city areas. , 2004, Health technology assessment.

[39]  A. Round,et al.  Effectiveness and cost-effectiveness of imatinib for first-line treatment of chronic myeloid leukaemia in chronic phase: a systematic review and economic analysis. , 2004, Health technology assessment.

[40]  S. Mason,et al.  EVALUATE hysterectomy trial: a multicentre randomised trial comparing abdominal, vaginal and laparoscopic methods of hysterectomy. , 2004, Health technology assessment.

[41]  J. Dretzke,et al.  Autoantibody testing in children with newly diagnosed type 1 diabetes mellitus. , 2004, Health technology assessment.

[42]  A. Thompson,et al.  Exploring rating scale responsiveness , 2004, Neurology.

[43]  M Sculpher,et al.  A rapid and systematic review and economic evaluation of the clinical and cost-effectiveness of newer drugs for treatment of mania associated with bipolar affective disorder. , 2004, Health technology assessment.

[44]  J Gabbay,et al.  Involving consumers in research and development agenda setting for the NHS: developing an evidence-based approach. , 2004, Health technology assessment.

[45]  J. Hobart,et al.  Improving the evaluation of therapeutic interventions in multiple sclerosis: development of a patient-based measure of outcome. , 2004, Health technology assessment.

[46]  D. Andrich,et al.  Is the sense of coherence-instrument applicable on adolescents? A latent trait analysis using Rasch-modelling , 2004 .

[47]  K. Morgan,et al.  Psychological treatment for insomnia in the regulation of long-term hypnotic drug use. , 2004, Health technology assessment.

[48]  M. Westwood,et al.  Systematic review of the clinical effectiveness and cost-effectiveness of capecitabine (Xeloda) for locally advanced and/or metastatic breast cancer. , 2004, Health technology assessment.

[49]  M Hutchinson,et al.  The multiple sclerosis impact scale (MSIS-29) is a reliable and sensitive measure , 2004, Journal of Neurology, Neurosurgery & Psychiatry.

[50]  David Andrich,et al.  Controversy and the Rasch Model: A Characteristic of Incompatible Paradigms? , 2004, Medical care.

[51]  J. Hobart,et al.  Rating scales for neurologists , 2003, Journal of neurology, neurosurgery, and psychiatry.

[52]  B. Cooper,et al.  Systematic review of isolation policies in the hospital management of methicillin-resistant Staphylococcus aureus: a review of the literature with epidemiological and economic modelling. , 2003, Health technology assessment.

[53]  J. Zajicek,et al.  Cannabinoids for treatment of spasticity and other symptoms related to multiple sclerosis (CAMS study): multicentre randomised placebo-controlled trial , 2003, The Lancet.

[54]  F. Song,et al.  Evaluating non-randomised intervention studies. , 2003, Health technology assessment.

[55]  A. Thompson,et al.  Evidence-based measurement in multiple sclerosis: the psychometric properties of the physical and psychological dimensions of three quality of life rating scales , 2003, Multiple sclerosis.

[56]  P. Roderick,et al.  The cost-effectiveness of screening for Helicobacter pylori to reduce mortality and morbidity from gastric cancer and peptic ulcer disease: a discrete-event simulation model. , 2003, Health technology assessment.

[57]  A J Thompson,et al.  Measuring the impact of MS on walking ability , 2003, Neurology.

[58]  J. Hobart,et al.  Multiple Sclerosis Impact Scale (MSIS-29): reliability and validity in hospital based samples , 2002, Journal of neurology, neurosurgery, and psychiatry.

[59]  N. Waugh,et al.  Screening for gestational diabetes: a systematic review and economic evaluation. , 2002, Health technology assessment.

[60]  S. Wessely,et al.  A systematic review of controlled trials of the effectiveness and cost-effectiveness of brief psychological treatments for depression. , 2002, Health technology assessment.

[61]  P. Duncan,et al.  Comparison of the responsiveness of the Barthel Index and the motor component of the Functional Independence Measure in stroke: the impact of using different methods for measuring responsiveness. , 2002, Journal of clinical epidemiology.

[62]  J. Jeng,et al.  Comparison of the psychometric characteristics of the functional independence measure, 5 item Barthel index, and 10 item Barthel index in patients with stroke , 2002, Journal of neurology, neurosurgery, and psychiatry.

[63]  Robert W Massof,et al.  The Measurement of Vision Disability , 2002, Optometry and vision science : official publication of the American Academy of Optometry.

[64]  David R. Jones,et al.  A systematic review of discharge arrangements for older people. , 2002, Health technology assessment.

[65]  Kathleenl N. Lohr,et al.  Assessing health status and quality-of-life instruments: Attributes and review criteria , 2002, Quality of Life Research.

[66]  E Berry,et al.  The cost-effectiveness of magnetic resonance angiography for carotid artery stenosis and peripheral vascular disease: a systematic review. , 2002, Health technology assessment.

[67]  C. Bombardier,et al.  A taxonomy for responsiveness. , 2001, Journal of clinical epidemiology.

[68]  C. Czoski-Murray,et al.  Extended scope of nursing practice: a multicentre randomised controlled trial of appropriately trained nurses and pre-registration house officers in pre-operative assessment in elective general surgery. , 2001, Health technology assessment.

[69]  A Thompson,et al.  The Multiple Sclerosis Impact Scale (MSIS-29): a new patient-based outcome measure. , 2001, Brain : a journal of neurology.

[70]  P. Garthwaite,et al.  Statistical assessment of the learning curves of health technologies. , 2001, Health technology assessment.

[71]  M. Mugford,et al.  Ultrasound screening in pregnancy: a systematic review of the clinical effectiveness, cost-effectiveness and women's views. , 2000, Health technology assessment.

[72]  J. Ware,et al.  Practical implications of item response theory and computerized adaptive testing: a brief summary of ongoing studies of widely used headache impact scales. , 2000, Medical care.

[73]  J. Hobart,et al.  Kurtzke scales revisited: the application of psychometric methods to clinical intuition. , 2000, Brain : a journal of neurology.

[74]  Howard Wainer,et al.  Computerized Adaptive Testing: A Primer , 2000 .

[75]  J. Michell.  Measurement in psychology: A critical history of a methodological concept. , 1999 .

[76]  A J Thompson,et al.  Measuring change in disability after inpatient rehabilitation: comparison of the responsiveness of the Barthel Index and the Functional Independence Measure , 1999, Journal of neurology, neurosurgery, and psychiatry.

[77]  D. Goodin.  Handbook of neurological rating scales , 1998 .

[78]  A. Glenny,et al.  Antimicrobial prophylaxis in colorectal surgery: a systematic review of randomized controlled trials , 1998, Health technology assessment.

[79]  J. Rost,et al.  Applications of Latent Trait and Latent Class Models in the Social Sciences , 1998 .

[80]  D. Cella,et al.  Health status assessment for the twenty-first century: item response theory, item banking and computer adaptive testing , 1997, Quality of Life Research.

[81]  J. Shea,et al.  Performance of a new, HIV/AIDS-targeted quality of life (HAT-QoL) instrument in asymptomatic seropositive individuals , 1997, Quality of Life Research.

[82]  C Jenkinson,et al.  Development Standards for Health Measures , 1996, Journal of health services research & policy.

[83]  G. Karabatsos,et al.  Validation of the Functional Assessment of Multiple Sclerosis quality of life instrument , 1996, Neurology.

[84]  J Fermanian,et al.  Development and validation of a rheumatoid hand functional disability scale that assesses functional handicap. , 1996, The Journal of rheumatology.

[85]  J. Hobart,et al.  Evaluating neurological outcome measures: the bare essentials. , 1996, Journal of neurology, neurosurgery, and psychiatry.

[86]  J. Michell.  An introduction to the logic of psychological measurement , 1995 .

[87]  Shah Ebrahim,et al.  A postal version of the Barthel Index , 1994 .

[88]  C. Sherbourne,et al.  The MOS 36-ltem Short-Form Health Survey (SF-36): III. Tests of Data Quality, Scaling Assumptions, and Reliability Across Diverse Patient Groups , 1994, Medical care.

[89]  J. M. Cortina,et al.  What Is Coefficient Alpha? An Examination of Theory and Applications , 1993 .

[90]  C. Sherbourne,et al.  The MOS 36-Item Short-Form Health Survey (SF-36) , 1992 .

[91]  Paul E. Spector.  Summated rating scale construction , 1991 .

[92]  D. Wade,et al.  The Rivermead Mobility Index: a further development of the Rivermead Motor Assessment. , 1991, International disability studies.

[93]  M. Liang,et al.  Comparisons of Five Health Status Instruments for Orthopedic Evaluation , 1990, Medical care.

[94]  Ron D. Hays,et al.  Beyond internal consistency reliability: Rationale and user’s guide for Multitrait Analysis Program on the microcomputer , 1990 .

[95]  D. Streiner,et al.  Health Measurement Scales: A practical guide to thier development and use , 1989 .

[96]  Lewis E. Kazis,et al.  Effect Sizes for Interpreting Changes in Health Status , 1989, Medical care.

[97]  D. R. Divgi.  DOES THE RASCH MODEL REALLY WORK FOR MULTIPLE CHOICE ITEMS? NOT IF YOU LOOK CLOSELY , 1986 .

[98]  David Thissen,et al.  A taxonomy of item response models , 1986 .

[99]  O. D. Duncan.  Probability, disposition, and the inconsistency of attitudes and behavior , 1986, Synthese.

[100]  Carl V. Granger,et al.  Advances in functional assessment for medical rehabilitation , 1986 .

[101]  M H Liang,et al.  Comparative measurement efficiency and sensitivity of five health status instruments for arthritis research. , 1985, Arthritis and rheumatism.

[102]  James D. Wright,et al.  Handbook of Survey Research. , 1985 .

[103]  R. Hambleton,et al.  Item Response Theory , 1984, The History of Educational Measurement.

[104]  G. Masters,et al.  Rating Scale Analysis. Rasch Measurement. , 1983 .

[105]  A. Jackson Stenner,et al.  Testing Construct Theories , 1982 .

[106]  F. Lord.  Applications of Item Response Theory To Practical Testing Problems , 1980 .

[107]  J. Ware,et al.  Measuring Components of Children's Health Status , 1979, Medical care.

[108]  M. J. Allen.  Introduction to Measurement Theory , 1979 .

[109]  Howard Wainer,et al.  The Rasch Model as Additive Conjoint Measurement , 1979 .

[110]  J. Fleiss,et al.  Intraclass correlations: uses in assessing rater reliability. , 1979, Psychological bulletin.

[111]  D. Goldberg,et al.  A scaled version of the General Health Questionnaire , 1979, Psychological Medicine.

[112]  D. Andrich.  A rating formulation for ordered response categories , 1978 .

[113]  B. Wright.  MISUNDERSTANDING THE RASCH MODEL , 1977 .

[114]  Benjamin D. Wright,et al.  Solving measurement problems with the Rasch model. , 1977 .

[115]  M. I. Waller.  ESTIMATING PARAMETERS IN THE RASCH MODEL: REMOVING THE EFFECTS OF RANDOM GUESSING , 1976 .

[116]  M. R. Novick,et al.  Statistical Theories of Mental Test Scores. , 1971 .

[117]  B. Bloom.  Proceedings of the 1967 Invitational Conference on Testing Problems. , 1969 .

[118]  R. Cattell.  The Scree Test For The Number Of Factors. , 1966, Multivariate behavioral research.

[119]  M. R. Novick.  The axioms and principal results of classical test theory , 1965 .

[120]  Mahoney Fi,et al.  FUNCTIONAL EVALUATION: THE BARTHEL INDEX. , 1965 .

[121]  T. Kuhn,et al.  The Structure of Scientific Revolutions , 1963 .

[122]  G. Forehand,et al.  A Method for Correcting Item-Total Correlations for the Effect of Relevant Item Inclusion , 1962 .

[123]  L. Cronbach.  Essentials of psychological testing , 1960 .

[124]  D. Campbell,et al.  Convergent and discriminant validation by the multitrait-multimethod matrix. , 1959, Psychological bulletin.

[125]  Allen L. Edwards,et al.  Techniques Of Attitude Scale Construction , 1958 .

[126]  Joseph L. Zinnes,et al.  Theory and Methods of Scaling. , 1958 .

[127]  L. Guttman.  Some necessary conditions for common-factor analysis , 1954 .

[128]  S. Stouffer,et al.  Measurement and Prediction , 1954 .

[129]  Frederic M. Lord,et al.  The relation of the reliability of multiple-choice tests to the distribution of item difficulties , 1952 .

[130]  H. Gulliksen.  Theory of mental tests , 1952 .

[131]  L. Cronbach.  Coefficient alpha and the internal structure of tests , 1951 .

[132]  Greenwood,et al.  PRINCIPLES OF MEDICAL STATISTICS , 1948 .

[133]  L. Cronbach.  Test “reliability”: Its meaning and determination , 1947, Psychometrika.

[134]  J. P. Guilford,et al.  New Standards For Test Evaluation , 1946 .

[135]  S S Stevens,et al.  On the Theory of Scales of Measurement. , 1946, Science.

[136]  L. Tucker,et al.  Maximum validity of a test with equivalent items , 1946, Psychometrika.

[137]  L. Guttman.  A basis for scaling qualitative data. , 1944 .

[138]  G. A. Ferguson,et al.  Item selection by the constant process , 1942 .

[139]  N. R. Campbell,et al.  Symposium: Measurement and its Importance for Philosophy , 1938 .

[140]  M. W. Richardson,et al.  The theory of the estimation of test reliability , 1937 .

[141]  Gardner Murphy,et al.  A Simple and Reliable Method of Scoring the Thurstone Attitude Scales , 1934 .

[142]  L. Thurstone.  Theory of attitude measurement. , 1929 .

[143]  L. Thurstone.  Attitudes Can Be Measured , 1928, American Journal of Sociology.

[144]  R. Fisher.  Statistical methods for research workers , 1927, Protoplasma.

[145]  C. Spearman.  CORRELATION CALCULATED FROM FAULTY DATA , 1910 .

[146]  C. Spearman.  General intelligence Objectively Determined and Measured , 1904 .

[147]  G. ter Riet,et al.  Methods of prediction and prevention of pre-eclampsia: systematic reviews of accuracy and effectiveness literature with economic modelling. , 2008, Health technology assessment.

[148]  A J Thompson,et al.  Getting the measure of spasticity in multiple sclerosis: the Multiple Sclerosis Spasticity Scale (MSSS-88). , 2006, Brain : a journal of neurology.

[149]  A Jackson Stenner,et al.  How accurate are lexile text measures? , 2006, Journal of applied measurement.

[150]  Boediono,et al.  Applied Rasch Measurement: A Book of Exemplars , 2005 .

[151]  D. Andrich.  The Rasch Model Explained , 2005 .

[152]  R. Collins,et al.  Towards evidence-based guidelines for the prevention of venous thromboembolism: systematic reviews of mechanical methods, oral anticoagulation, dextran and regional anaesthesia as thromboprophylaxis. , 2005, Health technology assessment.

[153]  C. Normand,et al.  A systematic review of the role of bisphosphonates in metastatic disease. , 2004, Health technology assessment.

[154]  M K Campbell,et al.  Systematic review of the long-term effects and economic consequences of treatments for obesity and implications for health improvement. , 2004, Health technology assessment.

[155]  P F Sharp,et al.  The value of digital imaging in diabetic retinopathy. , 2003, Health technology assessment.

[156]  David R. Jones,et al.  A systematic review and evaluation of the use of tumour markers in paediatric oncology: Ewing's sarcoma and neuroblastoma. , 2003, Health technology assessment.

[157]  J Cowan,et al.  Clinical and cost-effectiveness of capecitabine and tegafur with uracil for the treatment of metastatic colorectal cancer: systematic review and economic evaluation. , 2003, Health technology assessment.

[158]  T P Klassen,et al.  The inclusion of reports of randomised trials published in languages other than English in systematic reviews. , 2003, Health technology assessment.

[159]  P. Royle,et al.  Literature searching for clinical and cost-effectiveness studies used in health technology assessment reports carried out for the National Institute for Clinical Excellence appraisal system. , 2003, Health technology assessment.

[160]  J. Wight,et al.  Treatments for spasticity and pain in multiple sclerosis: a systematic review. , 2003, Health technology assessment.

[161]  J Chilcott,et al.  A review of the clinical effectiveness and cost-effectiveness of routine anti-D prophylaxis for pregnant women who are rhesus-negative. , 2003, Health technology assessment.

[162]  A Haycox,et al.  Early thrombolysis for the treatment of acute myocardial infarction: a systematic review and economic evaluation. , 2003, Health technology assessment.

[163]  S. Stearns,et al.  Systematic review of the effectiveness and cost-effectiveness, and economic evaluation, of home versus hospital or satellite unit haemodialysis for people with end-stage renal failure. , 2003, Health technology assessment.

[164]  A. Grant,et al.  Systematic review of the clinical effectiveness and cost-effectiveness of tension-free vaginal tape for treatment of urinary stress incontinence. , 2003, Health technology assessment.

[165]  A. Bagnall,et al.  Effectiveness and cost-effectiveness of acute hospital-based spinal cord injuries services: systematic review. , 2003, Health technology assessment.

[166]  J. Ware.  SF-36 health survey: Manual and interpretation guide , 2003 .

[167]  S. Paisley,et al.  Clinical and cost-effectiveness of new and emerging technologies for early localised prostate cancer: a systematic review. , 2003, Health technology assessment.

[168]  K. Payne,et al.  Which anaesthetic agents are cost-effective in day surgery? Literature review, national survey of practice and randomised controlled trial. , 2002, Health technology assessment.

[169]  J A Kanis,et al.  Treatment of established osteoporosis: a systematic review and cost-utility analysis. , 2002, Health technology assessment.

[170]  R. Milne,et al.  Zanamivir for the treatment of influenza in adults: a systematic review and economic evaluation. , 2002, Health technology assessment.

[171]  R. Milne,et al.  Clinical effectiveness and cost-effectiveness of growth hormone in children: a systematic review and economic evaluation. , 2002, Health technology assessment.

[172]  S. Bryan,et al.  Fludarabine as second-line therapy for B cell chronic lymphocytic leukaemia: a technology assessment. , 2002, Health technology assessment.

[173]  P. Royle,et al.  Screening for hepatitis C among injecting drug users and in genitourinary medicine clinics: systematic reviews of effectiveness, modelling study and national survey of current practice. , 2002, Health technology assessment.

[174]  David Andrich,et al.  A framework relating outcomes based education and the taxonomy of educational objectives , 2002 .

[175]  T. Skinner,et al.  Effects of educational and psychosocial interventions for adolescents with diabetes mellitus: a systematic review. , 2001, Health technology assessment.

[176]  P. Barry,et al.  Comparison of the effectiveness of inhaler devices in asthma and chronic obstructive airways disease: a systematic review of the literature. , 2001, Health technology assessment.

[177]  Everett V. Smith,et al.  Evidence for the reliability of measures and validity of measure interpretation: a Rasch measurement perspective. , 2001, Journal of applied measurement.

[178]  M. Knapp,et al.  Home treatment for mental health problems: a systematic review. , 2001, Health technology assessment.

[179]  R. Fitzpatrick,et al.  Issues in methodological research: perspectives from researchers and commissioners. , 2001, Health technology assessment.

[180]  C. Eiser,et al.  Quality-of-life measures in chronic diseases of childhood. , 2001, Health technology assessment.

[181]  T. Peters,et al.  Subgroup analyses in randomised controlled trials: quantifying the risks of false-positives and false-negatives. , 2001, Health technology assessment.

[182]  P. Whiting,et al.  A rapid and systematic review of the clinical effectiveness and cost-effectiveness of debriding agents in treating surgical wounds healing by secondary intention. , 2001, Health technology assessment.

[183]  S. Walters,et al.  Costs and benefits of community postnatal support workers: a randomised controlled trial. , 2000, Health technology assessment.

[184]  K Tolley,et al.  The effectiveness of domiciliary health visiting: a systematic review of international studies and a selective review of the British literature. , 2000, Health technology assessment.

[185]  F. Cowan,et al.  Implantable contraceptives (subdermal implants and hormonally impregnated intrauterine systems) versus other forms of reversible contraceptives: two systematic reviews to assess relative effectiveness, acceptability, tolerability and cost-effectiveness. , 2000, Health technology assessment.

[186]  A. Culyer,et al.  False-negative results in screening programmes: systematic review of impact and implications. , 2000, Health technology assessment.

[187]  K. Jolly,et al.  Coronary artery stents in the treatment of ischaemic heart disease: a rapid and systematic review. , 2000, Health technology assessment.

[188]  P. Bower,et al.  Randomised controlled trial of non-directive counselling, cognitive-behaviour therapy and usual general practitioner care in the management of depression as well as mixed anxiety and depression in primary care. , 2000, Health technology assessment.

[189]  M. Gulliford,et al.  Monitoring blood glucose control in diabetes mellitus: a systematic review. , 2000, Health technology assessment.

[190]  R. Milne,et al.  Disease-modifying drugs for multiple sclerosis: a rapid and systematic review. , 2000, Health technology assessment.

[191]  C. Normand,et al.  Screening for sickle cell disease and thalassaemia: a systematic review with supplementary research. , 2000, Health technology assessment.

[192]  N. Waugh,et al.  Combination therapy (interferon alfa and ribavirin) in the treatment of chronic hepatitis C: a rapid and systematic review. , 2000, Health technology assessment.

[193]  M. McDonagh,et al.  A rapid and systematic review of the clinical effectiveness and cost-effectiveness of glycoprotein IIb/IIIa antagonists in the medical management of unstable angina. , 2000, Health technology assessment.

[194]  A. Culyer,et al.  Liquid-based cytology in cervical screening: a rapid and systematic review. , 2000, Health technology assessment.

[195]  R. Jordan,et al.  Treatments for fatigue in multiple sclerosis: a rapid and systematic review. , 2000, Health technology assessment.

[196]  T. Sheldon,et al.  What role for statins? A review and economic model. , 1999, Health technology assessment.

[197]  J Gabbay,et al.  'Early warning systems' for identifying new healthcare technologies. , 1999, Health technology assessment.

[198]  David R. Jones,et al.  Methods for the analysis of quality-of-life and survival data in health technology assessment. , 1999, Health technology assessment.

[199]  A E Ades,et al.  Antenatal and neonatal haemoglobinopathy screening in the UK: review and economic analysis. , 1999, Health technology assessment.

[200]  A. Culyer,et al.  Effectiveness and efficiency of methods of dialysis therapy for end-stage renal disease: systematic reviews. , 1998, Health technology assessment.

[201]  J. Hutton,et al.  Systematic review of endoscopic ultrasound in gastro-oesophageal cancer. , 1998, Health technology assessment.

[202]  M J Buxton,et al.  Evaluating patient-based outcome measures for use in clinical trials. , 1998, Health technology assessment.

[203]  M. Petticrew,et al.  Resource allocation for chronic stable angina: a systematic review of effectiveness, costs and cost-effectiveness of alternative interventions. , 1998, Health technology assessment.

[204]  E. Murphy,et al.  Qualitative research methods in health technology assessment: a review of the literature. , 1998, Health technology assessment.

[205]  D. Spiegelhalter,et al.  Consensus development methods, and their use in clinical guideline development. , 1998, Health technology assessment.

[206]  A. Culyer,et al.  Newborn screening for inborn errors of metabolism: a systematic review. , 1997, Health technology assessment.

[207]  M Forshaw,et al.  A critical review of the role of neonatal hearing screening in the detection of congenital hearing impairment. , 1997, Health technology assessment.

[208]  B. Gandek,et al.  MAP-R for windows: multitrait / multi-item analysis program - revised user's guide. , 1997 .

[209]  J Nicholl,et al.  Routine preoperative testing: a systematic review of the evidence. , 1997, Health technology assessment.

[210]  A. Knowles.  DIABETIC FOOT ULCERATION , 1996 .

[211]  P. Bech,et al.  Psychiatric, business, and psychological applications of fundamental measurement models , 1994 .

[212]  A. Stewart,et al.  Measuring Functioning and Well-Being: The Medical Outcomes Study Approach , 1992 .

[213]  A. Williams.  EuroQol : a new facility for the measurement of health-related quality of life , 1990 .

[214]  H. Suen.  Principles of test theories , 1990 .

[215]  David Andrich,et al.  Rasch Models For Measurement , 1988 .

[216]  C. Spearman.  The proof and measurement of association between two things. By C. Spearman, 1904. , 1987, The American journal of psychology.

[217]  D. Saccuzzo,et al.  Psychological Testing: Principles, Applications, and Issues , 1982 .

[218]  J. Ware,et al.  Conceptualization and Measurement of Health for Adults in the Health Insurance Study , 1979 .

[219]  B. Wright,et al.  Best Test Design. Rasch Measurement. , 1979 .

[220]  T. Kuhn,et al.  The Essential Tension , 1977 .

[221]  Paul E. Spector.  Choosing Response Categories for Summated Rating Scales , 1976 .

[222]  F. G. Brown,et al.  Principles of educational and psychological testing , 1970 .

[223]  Wilson H. Guertin,et al.  Introduction to modern factor analysis , 1970 .

[224]  J. Nunnally.  Introduction to Psychological Measurement , 1970 .

[225]  Melvin R. Novick,et al.  Some latent train models and their use in inferring an examinee's ability , 1966 .

[226]  Paul Horst,et al.  Psychological measurement and prediction , 1966 .

[227]  E. Ghiselli.  Theory of psychological measurement , 1964 .

[228]  G. Helmstadter,et al.  Principles of Psychological Measurement , 1964 .

[229]  R. Luce,et al.  Simultaneous conjoint measurement: A new type of fundamental measurement , 1964 .

[230]  L. Cronbach,et al.  Construct validity in psychological tests. , 1955, Psychological bulletin.

[231]  F. Lord.  A theory of test scores. , 1952 .

[232]  D. Lawley,et al.  X.—The Factorial Analysis of Multiple Item Tests , 1944, Proceedings of the Royal Society of Edinburgh. Section A. Mathematical and Physical Sciences.

[233]  D. Lawley,et al.  XXIII.—On Problems connected with Item Selection and Test Construction , 1943, Proceedings of the Royal Society of Edinburgh. Section A. Mathematical and Physical Sciences.

[234]  L. Thurstone.  The method of paired comparisons for social values , 1927 .