Young, Tracey A. and Yang, Y and Brazier, J and Tsuchiya, A (2007): The use of Rasch analysis as a tool in the construction of a preference based measure: the case of AQLQ.
Download (307kB) | Preview
The majority of quality of life instruments are not preference-based measures and so cannot be used within cost utility analysis. The Asthma Quality of Life Questionnaire (AQLQ) is one such instrument. The aim of this study was to develop a health state classification that is amenable to valuation from the AQLQ.
Rasch models were applied to samples of responders to the AQLQ with the aim of i) selecting a number of items for a preference based utility measure (AQL-5D), ii) reducing the number of levels for each item to a more manageable number of levels for establishing AQL-5D. Selection of items for the evaluation survey was supported with conventional psychometric criteria for item selection (feasibility, internal consistency, floor and ceiling effects, responsiveness and regression against overall health).
The role of Rasch analysis in reducing the number of item levels to a preconceived target number of levels proved unsuccessful. However, Rasch analysis proved to be a useful tool in assisting in the initial process of selecting items from an existing HRQL instrument in the construction of AQL-5D. The method is recommended for use alongside conventional psychometric testing to aid in the development of preference-based measures.
|Item Type:||MPRA Paper|
|Original Title:||The use of Rasch analysis as a tool in the construction of a preference based measure: the case of AQLQ|
|Keywords:||Rasch analysis; preference-based measures; asthma; quality of life|
|Subjects:||I - Health, Education, and Welfare > I3 - Welfare, Well-Being, and Poverty > I31 - General Welfare, Well-Being
I - Health, Education, and Welfare > I1 - Health > I19 - Other
|Depositing User:||Sarah McEvoy|
|Date Deposited:||24. Mar 2011 22:13|
|Last Modified:||26. Feb 2013 13:38|
Beaton DE, Bombardier C, Katz JN, Wright JG (2001). A taxonomy for responsiveness. J Clin Epidemiol 54(12):1204-17.
Bhakta B, Tennant A, Horton M, Lawton G, Andrich D (2005). Using item response theory to explore the psychometric properties of extended matching questions examination in undergraduate medical education. BMC Med Educ 5(9) http://www.biomedcentral.com/1472-6920-5-9.
Brazier JE, Ratcliffe J, Tsuchiya A, Solomon J (2007). Measuring and valuing health for economic evaluation. Oxford: Oxford University Press.
Brazier J, Roberts J, Deverill M (2002). The estimation of a preference-based measure of health from the SF-36. J Health Econ, 21(2):271-92.
Brazier J, Usherwood T, Harper R, Thomas K (1998). Deriving a preference-based single index from the UK SF-36 health survey. J Clin Epidemiol 51(11):1115-28.
Cohen J (1978). Statistical power analysis for the behavioural sciences. New York: New York Academic Press.
De Bruin AF, Diederiks JPM, De Witte LP, Stevens FCJ, Philipsen H (1997). Assessing the responsiveness of a functional status measure: the Sickness Impact Profile versus the SIP68. J Clin Epidemiol 50(5):529-40.
Duncan PW, Bode RK, Min Lai S, Perera S (2003). Glycine antagonist in neuroprotection Americans investigators. Rasch analysis of a new stroke-specific outcome scale: the Stroke Impact Scale. Arch Phys Med Rehabil 84(7):950-63.
Eccles M, Grimshaw J, Steen N, Parkin D, Purves I, McColl E, et al (2000). The design and analysis of a randomized controlled trial to evaluate computerized decision support in primary care: the COGENT study. Fam Pract 17(2):180-6.
Gilworth G, Chamberlain MA, Bhakta B, Haskard D, Silman A, Tennant A (2004). Development of the BD-HRQL: a quality of life measure specific to Behcet’s disease. J Rheumatol 31(5):931-7.
Humbert M, Beasley R, Ayres J, Slavin R, Hebert J, Bousquet J, et al (2005). Benefits of omalizumab as add-on therapy in patients with severe persistent asthma who are inadequately controlled despite best available therapy (GINA 2002 step 4 treatment): INNOVATE. Allergy 60(3):309-16.
Juniper EF, Buist AS, Cox FM, Ferrie PJ, King DR (1999). Validation of a standardized version of the Asthma Quality of Life Questionnaire. Chest 115(5):1265-70.
Juniper EF, Guyatt GH, Cox FM, Ferrie PJ, King DR (1999). Development and validation of the mini asthma quality of life questionnaire. Eur Respir J 14(1):32-8.
Juniper EF, Guyatt GH, Feeny DH, Ferrie PJ, Griffith LE, Townsend M (1996). Measuring quality of life in children with asthma. Qual Life Res 5(1):35-46.
Juniper EF, Guyatt GH, Ferrie PJ, Griffith LE (1993). Measuring quality of life in asthma. Am Rev Resp Dis 147(4):832-8.
Kubinger KD (2005). Psychological test calibration using the Rasch model – Some critical suggestions on traditional approaches. International Journal of Testing 5(4):377-94.
Nunnally JO (1978). Psychometric theory. New York: McGraw Hill.
Pesudovs K, Garamendi E, Elliott DB (2004). The quality of life impact of refractive correction (QIRC) questionnaire: development and validation. Optom Vis Sci 81(10):769-77.
Raczek AE, Ware JE, Bjorner JB, Gandek B, Haley SM, Aaronson NK, et al (1998). Comparison of Rasch and summated rating scales constructed from SF-36 physical functioning items in seven countries: Results from the IHRQLA project. J Clin Epidemiol 15(11):1203-14.
Rasch G (1960). Probabilistic models for some intelligence and attainment tests. Chicago: University of Chicago Press. Reprinted 1980.
Rasch Unidimensional Measurement Models (RUMM) 2020 ©. RUMM Laboratory Pty Ltd 1997-2004.
SPSS for Windows, Release. 12.0.1. 2003. Chicago: SPSS Inc. 2003
Tennant A, McKenna SP, Hagell P (2004). Application of Rasch analysis in the development and application of quality of life instruments. Value in Health 7(Supplement 1):S22-S26
Tesio L (2003). Measuring behaviours and perceptions: Rasch analysis as a tool for rehabilitation research. J Rehabil Med 35(6):105-15.
Valderas JM, Alonso J, Prieto L (2004). Content-based interpretation aids for health-related quality of life measures in clinical practice. An example for the visual function index (VF-14). Qual Life Res 13(1):35-44.
White LJ, Velozo CA (2002). The use of Rasch measurement to improve the Oswestry classification scheme. Arch Phys Med Rehabil 83(6):822-31.
Willmott AS, Fowles DE (1974). The objective interpretation of test performance: The Rasch model applied. Windsor NFER.
Wright JG, Young NL (1998). A comparison of different indices of responsiveness. J Clin Epidemiol 50(3):79-93.
Yang Y, Tsuchiya A, Brazier J, Young TA. Estimating a preference-based single index from the asthma quality of life questionnaire. (In submission 2007)