Top

Gepubliceerd in:

01-04-2008

The validity of generic and condition-specific preference-based instruments: the ability to discriminate asthma control status

Auteurs: Helen M. McTaggart-Cowan, Carlo A. Marra, Yaling Yang, John E. Brazier, Jacek A. Kopec, J. Mark FitzGerald, Aslam H. Anis, Larry D. Lynd

Gepubliceerd in: Quality of Life Research | Uitgave 3/2008

Abstract

Objective

A goal of asthma management is to improve the patient’s health-related quality of life (HRQL). However, it is unclear whether HRQL instruments can discriminate across asthma control measures. The objective of this study was to evaluate the validity of generic and condition-specific preference-based instruments, in terms of their ability to distinguish asthma control.

Methods

Asthma patients (n = 157) completed three generic preference-based instruments: the Health Utility Index Mark 3 (HUI-3), the EuroQol (EQ-5D), and the Short Form 6D (SF-6D) and two condition-specific questionnaires: the standardized Asthma Quality of Life Questionnaire (AQLQ(S)) and the Asthma Control Questionnaire (ACQ). The AQLQ(S) scores were converted into the condition-specific preference-based scores: the Asthma Quality of Life Utility Index (AQL-5D).

Results

The preference-based instruments were generally able to discriminate across control measures, such as ACQ scores and magnitude of asthma medication, but were not able to discriminate for self-reported control and severity levels. These instruments also correlated with most control measures (r = 0.32–0.37). Significant relationships between AQL-5D scores and all control variables were observed.

Conclusions

Overall, the AQL-5D discriminated across all levels of asthma control. The HUI-3, the EQ-5D, and the SF-6D differentiated between the highest and lowest levels of control but could not discriminate between the moderate levels.

vorige artikel The adaptation into Spanish of the Coddington Life Events Scales (CLES)

volgende artikel Quantification of the level descriptors for the standard EQ-5D three-level system and a five-level version according to two methods

Statistics Canada. (2001). National population health survey (Online). Retrieved June 20, 2006, from http://www40.statcan.ca/101/cst01/health50a.htm.

Streiner, D. L., & Norman, G. R. (1995). Health measurement scales: A practical guide to their development and use. New York: Oxford University Press.

Bateman, E. D., Boushey, H. A., Bousquet, J., Busse, W. W., Clark, T. J., Pauwels, R. A., et al. (2004). Can guideline-defined asthma control be achieved? The gaining optimal asthma controL study. American Journal of Respiratory and Critical Care Medicine, 170, 836–844.PubMedCrossRef

O’Byrne, P. M., Bisgaard, H., Godard, P. P., Pistolesi, M., Palmqvist, M., Zhu, Y., et al. (2005). Budesonide/formoterol combination therapy as both maintenance and reliever medication in asthma. American Journal of Respiratory and Critical Care Medicine, 171, 129–136.PubMedCrossRef

Cockcroft, D. W., & Swystun, V. A. (1996). Asthma control versus asthma severity. Journal of Allergy and Clinical Immunology, 98, 1016–1018.PubMedCrossRef

Juniper, E., Guyatt, G., & Epstein, R. (1992). Evaluation of impairment of health related quality of life in asthma: Development of a questionnaire for use in clinical trials. Thorax, 47, 76–83.PubMedCrossRef

Juniper, E. F., Guyatt, G. H., Ferrie, P. J., & Griffith, L. E. (1993). Measuring quality of life in asthma. American Review of Respiratory Diseases, 147, 832–838.

Feeny, D., Furlong, W., Torrance, G. W., Goldsmith, C. H., Zhu, Z., DePauw, S., et al. (2002). Multiattribute and single-attribute utility functions for the health utilities index mark 3 system. Medical Care, 40, 113–128.PubMedCrossRef

The EuroQol Group. (1990). EuroQoL—a new facility for the measurement of health-related quality of life. Health Policy, 16, 199–208.CrossRef

10.

Brazier, J., Roberts, J., & Deverill, M. (2002). The estimation of a preference-based measure of health from the SF-36. Journal of Health Economics, 21, 271–292.PubMedCrossRef

11.

Weinstein, M. C., Siegel, J. E., Gold, M. R., Kamlet, M. S., & Russell, L. B. (1996). Recommendations of the panel on cost-effectiveness in health and medicine. Journal of the American Medical Association, 276, 1253–1258.PubMedCrossRef

12.

Neumann, P. J., Goldie, S. J., & Weinstein, M. C. (2000). Preference-based measures in economic evaluation in health care. Annual Review of Public Health, 21, 587–611.PubMedCrossRef

13.

Brazier, J., & Deverill, M. (1999). A checklist for judging preference-based measures of health-related quality of life: learning from psychometrics. Health Economics, 8, 41–51.PubMedCrossRef

14.

Guyatt, G. H., King, D. R., Feeny, D. H., Stubbing, D., & Goldstein, R. S. (1999). Generic and specific measurement of health-related quality of life in a clinical trial of respiratory rehabilitation. Journal of Clinical Epidemiology, 52(3), 187–192.PubMedCrossRef

15.

Revicki, D. A., Leidy, N. K., Brennan-Diemer, F., Sorensen, S., & Togias, A. (1998). Development and preliminary validation of the multiattibute rhinitis symptom utility index. Quality of Life Research, 7, 693–702.PubMedCrossRef

16.

Revicki, D. A., Leidy, N. K., Brennan-Diemer, F., Sorensen, S., & Togias, A. (1998). Intergrating patient preferences into health outcomes assessment: The multiattribute asthma symptom utility index. Chest, 114, 998–1007.PubMedCrossRef

17.

Sculpher, M. (2001). Using economic evaluations to reduce the burden of asthma and chronic obstructive pulmonary disease. Pharmacoeconomics, 19, 21–25.PubMedCrossRef

18.

Paltiel, A. D., Fuhlbrigge, A. L., Kitch, B. T., Liljas, B., Weiss, S. T., Neumann, P. J., et al. (2001). Cost-effectiveness of inhaled corticosteroids in adults with mild-to-moderate asthma: Results from the asthma policy model. Journal of Allergy and Clinical Immunology, 108, 39–46.PubMedCrossRef

19.

van den Boom, G., Rutten-van Molken, M. P., Molema, J., Tirimanna, P. R., van Weel, C., & van Schayck, C. P. (2001). The cost effectiveness of early treatment with fluticasone propionate 250 microg twice a day in subjects with obstructive airway disease. Results of the DIMCA program. American Journal of Respiratory and Critical Care Medicine, 164, 2057–2066.PubMed

20.

Schermer, T. R., Thoonen, B. P., van den Boom, G., Akkermans, R. P., Grol, R. P., Folgering, H. T., et al. (2002). Randomized controlled economic evaluation of asthma self-management in primary health care. American Journal of Respiratory and Critical Care Medicine, 166, 1062–1072.PubMedCrossRef

21.

Stahl, E., Postma, D. S., Svensson, K., Tattersfield, A. E., Eivindson, A., Schreurs, A., et al. (2003). Formoterol used as needed improves health-related quality of life in asthmatic patients uncontrolled with inhaled corticosteroids. Respiratory Medicine, 97, 1061–1066.PubMedCrossRef

22.

Moy, M. L., Fuhlbrigge, A. L., Blumenschein, K., Chapman, R. H., Zillich, A. J., Kuntz, K. M., et al. (2004). Association between preference-based health-related quality of life and asthma severity. Annual Allergy, Asthma, and Immunology, 92, 329–334.

23.

Szende, A., Svensson, K., Ståhl, E., Mészáros, Á., & Berta, G. Y. (2004). Psychometric and utility-based measures of health status of asthmatic patients with different disease control level. Pharmacoeconomics, 22, 537–547.PubMedCrossRef

24.

Global Initiative for Asthma. (1998). Pocket guide for asthma management and prevention. Bethesda (MD): National Institute of Health NIH Pub. No. 96-3569B.

25.

Jones, P. W., Quirk, F. A., Baveystock, C. M., & Littlejohns, P. (1992). A set-complete measure of health status for chronic airflow limitation. The St. George’s respiratory questionnaire. American Review of Respiratory Diseases, 145, 1321–1327.

26.

Sanjuás, C., Alonson, J., Prieto, L., Ferrer, M., Broquetas, J. M., & Antó, J. M. (2002). Health-related quality of life in asthma: A comparison between St. George’s respiratory questionnaire and asthma quality of life questionnaire. Quality of Life Research, 11, 729–738.PubMedCrossRef

27.

Juniper, E. F., O’Byrne, P. M., & Roberts, J. N. (2001). Measuring asthma control in group studies: Do we need airway caliber and rescue beta2-agonist use? Respiratory Medicine, 95, 319–323.PubMedCrossRef

28.

British Thoracic Society, British Paediatric Association, Royal College of Physicians of London, King’s Fund Centre, National Asthma Campaign, Royal College of General Practitioners et al. (1993). Guidelines on the management of asthma. Thorax, 48(Suppl 2), S1–S24.

29.

Boulet, L.-P., Becker, A., Bérubé, D., Beveridge, R., & Ernst, R. (1999). Canadian asthma consensus report, 1999. Canadian Medical Association Journal, 161(11 Suppl), S1–S62.PubMed

30.

Yang, Y., Tsuchiya, A., Brazier, J. E., & Young, T. A. (2007). Estimating a preference-based single index from the Asthma Quality of Life Questionnaire (AQLQ). Discussion paper No. 07/02 from Health Economics and Decision Science, School of Health and Related Research, Sheffield, United Kingdom.

31.

Lynd, L. D., Guh, D. P., Paré, P. D., & Anis, A. H. (2002). Patterns of inhaled asthma medication use: A 3-year longitudinal analysis of prescription claims data from British Columbia, Canada. Chest, 122(6), 1973–1981.PubMedCrossRef

32.

Maddigan, S. L., Feeny, D. H., & Johnson, J. A. (2005). Health-related quality of life deficits associated with diabetes and comorbidites in a Canadian national population health survey. Quality of Life Research, 14(5), 1311–1320.PubMedCrossRef

33.

Walters, S. J., & Brazier, J. E. (2003). What is the relationship between the minimally important difference and health state utility values? The case of the SF-6D. Health Quality of Life Outcomes, 1(1), 4–13.CrossRef

34.

Crapo, R. O., Morris, A. H., & Gardner, R. M. (1981). Reference spirometric values using techniques and equipment that meet ATS recommendations. American Review of Respiratory Diseases, 123, 659–664.

35.

American Thoracic Society. (1987). Standardization of spirometry–1987 update. Statement of the American thoracic society. American Review of Respiratory Diseases, 136, 1285–1298.

36.

Juniper, E. F., Buist, A. S., Cox, F. M., Ferrie, P. J., & King, D. R. (1999). Validation of a standardized version of the asthma quality of life questionnaire. Chest, 115, 1265–1270.PubMedCrossRef

37.

Juniper, E. F., O’Byrne, P. M., Guyatt, G. H., Ferrie, P. J., & King, D. R. (1999). Development and validation of a questionnaire to measure asthma control. European Respiratory Journal, 14(4), 902–907.PubMedCrossRef

38.

Dolan, P., & Gudex, C. (1995). Time preference, duration and health state valuations. Health Economics, 4, 289–299.PubMed

39.

Young, T. A., Yang, Y., Tsuchiya, A., & Brazier, J. E. (2007). The use of Rasch analysis as a tool in the construction of preference-based measure: The case of AQLQ. Discussion paper No. 07/02 from Health Economics and Decision Science, School of Health and Related Research, Sheffield, United Kingdom.

40.

Cohen, J. (1992). A power primer. Psychology Bulletin, 112, 155–159.CrossRef

41.

Brazier, J., Akehurst, R., Brennan, A., Dolan, P., Claxton, K., McCabe, C., et al. (2005). Should patients have a greater role in valuing health states? Applied Health Economics and Health Policy, 4, 201–208.PubMedCrossRef

42.

Bleichrodt, H., & Johannesson, M. (1997). Standard gamble, time trade-off and rating scale: Experimental results on the ranking properties of QALYs. Journal of Health Economics, 16, 155–175.PubMedCrossRef

43.

Kopec, J. A., & Willison, K. D. (2003). A comparative review of four preference-weighted measures of health-related quality of life. Journal of Clinical Epidemiology, 56, 317–332.PubMedCrossRef

44.

Drummond, M. F., Sculpher, M. J., Torrance, G. W., O’Brien, B. J., & Stoddart, G. L. (2005). Methods for the economic evaluation of health care programmes. New York: Oxford University Press.

Titel: The validity of generic and condition-specific preference-based instruments: the ability to discriminate asthma control status
Auteurs: Helen M. McTaggart-Cowan
Carlo A. Marra
Yaling Yang
John E. Brazier
Jacek A. Kopec
J. Mark FitzGerald
Aslam H. Anis
Larry D. Lynd
Publicatiedatum: 01-04-2008
Uitgeverij: Springer Netherlands
Gepubliceerd in: Quality of Life Research / Uitgave 3/2008
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI: https://doi.org/10.1007/s11136-008-9309-6

Bohn Stafleu van Loghum

Deel dit onderdeel of sectie (kopieer de link)

Abstract

Objective

Methods

Results

Conclusions

Log in om toegang te krijgen

Andere artikelen Uitgave 3/2008

Improving quality of life using compound mind-body therapies: evaluation of a course intervention with body movement and breath therapy, guided imagery, chakra experiencing and mindfulness meditation

Impact of oral health status on oral health-related quality of life in Chinese hospitalised geriatric patients

Validation of the French version of the colorectal-specific quality-of-life questionnaires EORTC QLQ-CR38 and FACT-C

Evaluation of a Multi-disciplinary Back Pain Rehabilitation Programme—Individual and Group Perspectives

Aggregated measures of functional disability in a nationally representative sample of disabled people: analysis of dimensionality according to gender and severity of disability

Physical activity, quality of life, and weight status in overweight children