Patient_Reported_Outcome_Measures_in_Rheumatic_Diseases

57

developing questionnaire modules. EORTC study group on quality of life. Qual Life Res.

1993;2:287–95.

29. Aarsonson NK. Assessing the quality of life of patients in cancer clinical trials: common prob-
    lems and common sense solutions. Eur J Cancer. 1992;28A:1304–7.


30. Jaeschke R, Singer J, Guyatt GH. Measurement of health status. Ascertaining the minimal
    clinically important difference. Control Clin Trials. 1989;10:407–15.


31. Juniper EF, Guyatt GH, Willan A, Griffith LE. Determining a minimal important change in a
    disease-specific quality of life questionnaire. J Clin Epidemiol. 1994;47:81–7.


32. Stewart AL, Greenfield S, Hays RD, Wells K, Rogers WH, Berry SD, McGlynn EA, Ware
    JE. Functional status and well-being of patients with chronic conditions: results from the medi-
    cal outcomes study. J Am Med Assoc. 1989;262:907–13.


33. Garratt AM, Ruta DA, Abdalla MI, Russell IT. The SF-36 health survey questionnaire: ii
    responsiveness to changes in health status in four common clinical conditions. Qual Health
    Care. 1994;3:186–92.


34. Feeny DH, Furlong W, Boyle M, Torrance GW. Multi-attribute health status classification
    systems: Health Utilities Index. PharmacoEconomics. 1995;7:490–502.


35. Hunt SM, McEwen J, McKenna SP. Measuring health status: a new tool for clinicians and
    epidemiologists. J R Coll Gen Pract. 1985;35:185–8.


36. Bergner M, Bobbitt RA, Carter WB, Gilson BS. The sickness impact profile: development and
    final revision of a health status measure. Med Care. 1981;19:787–805.


37. Bindman AB, Keane D, Lurie N. Measuring health changes among severely ill patients: the
    floor phenomenon. Med Care. 1990;28:1142–52.


38. Gardiner PV, Sykes HR, Hassey GA, Walker DJ. An evaluation of the health assessment ques-
    tionnaire in long-term follow-up of disability in rheumatoid arthritis. Br J Rheumatol.
    1993;32:724–8.


39. Stucki G, Daltroy L, Katz JN, Johannesson M, Liang MH. Interpretation of change scores in
    ordinal clinical scale and health status measures: the whole may not equal the sum of the parts.
    J Clin Epidemiol. 1996;49:711–7.


40. Tennant A, Hillman M, Fear J, Pickering A, Chamberlain MA. Are we making the most of the
    Stanford health assessment questionnaire. Br J Rheumatol. 1996;35:574–8.


41. Garratt AM in collaboration with UKBEAM. Rasch analysis of the Roland disability question-
    naire. Spine. 2003;28:79–84.


42. Cronbach LJ. Coefficient alpha and the internal structure of tests. Psychometrika.
    1951;16:297–334.


43. Streiner GL, Norman RD. Health measurement scales: a practical guide to their development
    and use. 2nd ed. Oxford: Oxford University Press; 1995.


44. Guyatt GH, Cook DJ. Health status, quality of life and the individual. J Am Med Assoc.
    1994;272:630–1.


45. McDowell I, Jenkinson C. Development standards for health measures. J Health Serv Res
    Policy. 1996;1:238–46.


46. Jolliffe IT, Morgan BJT. Principal component analysis and exploratory factor analysis. Stat
    Methods Med Res. 1992;1:69–95.


47. Garratt AM, Hutchinson A, Russell IT. The UK version of the Seattle Angina Questionnaire
    (SAQ-UK): reliability, validity and responsiveness. J Clin Epidemiol. 2001;54:907–15.


48. Kazis LE, Anderson JJ, Meenan RF. Effect sizes for interpreting changes in health status. Med
    Care. 1989;27:MS178–89.


49. Liang MH, Fossel AH, Larson MG. Comparisons of five health status instruments for orthope-
    dic evaluation. Med Care. 1990;28:632–42.


50. Guyatt G, Walter S, Norman G. Measuring change over time: assessing the usefulness of
    evaluative instruments. J Chronic Dis. 1987;40:171–8.


51. Acquadro C, Berzon R, Dubois D, Leidy NK, Marquis P, Revicki D, et al. Incorporating the
    patient’s perspective into drug development and communication: an ad hoc task force report of

2 A Guide to PROMs Methodology and Selection Criteria