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Health and Quality of Life Outcomes

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Open Access 01-12-2007 | Research

Translation and validation of non-English versions of the Ankylosing Spondylitis Quality of Life (ASQOL) questionnaire

Authors: Lynda C Doward, Stephen P McKenna, David M Meads, James Twiss, Dennis Revicki, Robert L Wong, Michelle P Luo

Published in: Health and Quality of Life Outcomes | Issue 1/2007

Abstract

Background

The Ankylosing Spondylitis Quality of Life (ASQOL) questionnaire is a unidimensional, disease-specific measure developed in the UK and the Netherlands. This study describes its adaptation into other languages.

Methods

The UK English ASQOL was translated into US English; Canadian French and English; French; German; Italian; Spanish; and Swedish (dual-panel methods). Cognitive debriefing interviews were conducted with AS patients. Psychometric/scaling properties were assessed using data from two Phase III studies of adalimumab. Baseline and Week-2 data were used to assess test-retest reliability. Validity was determined by correlation of ASQOL with SF-36 and BASFI and by discriminative ability of ASQOL based on disease severity. Item response theory (Rasch model) was used to test ASQOL's scaling properties.

Results

Cognitive debriefing showed the new ASQOL versions to be clear, relevant and comprehensive. Sample sizes varied, but were sufficient for: psychometric/scaling assessment for US English and Canadian English; psychometric but not scaling analyses for German; and preliminary evidence of these properties for the remaining languages. Test-retest reliability and Cronbach's alpha coefficients were high: US English (0.85, 0.85), Canadian English (0.87, 0.86), and German (0.77, 0.79). Correlations of ASQOL with SF-36 and BASFI for US English, Canadian English, and German measures were moderate, but ASQOL discriminated between patients based on perceived disease severities (p < 0.01). Results were comparable for the other languages. US English and Canadian English exhibited fit to the Rasch model (non-significant p-values: 0.54, 0.68), confirming unidimensionality.

Conclusion

The ASQOL was successfully translated into all eight languages. Psychometric properties were excellent for US English, Canadian English, and German, and extremely promising for the other languages.

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Sieper J, Braun J, Rudwaleit M, Boonen A, Zink A: Ankylosing spondylitis: an overview. Ann Rheum Dis 2002,61(Suppl 3):iii8–18.PubMedCentralPubMedCrossRef

Coote A, Haslam P: Rheumatology and Orthopaedics. 1st edition. Elsevier Ltd; 2004.

Ryall NH, Helliwell PS: A critical review of Ankylosing Spondylitis. Phys Rehabil Med 1998, 10: 265–301.

Zink A, Braun J, Listing J, Wollenhaupt J: Disability and handicap in rheumatoid arthritis and ankylosing spondylitis – results from the German rheumatological database. German Collaborative Arthritis Centers. J Rheumatol 2000, 27: 613–622.PubMed

Doward LC, Spoorenberg A, Cook SA, Whalley D, Helliwell PS, Kay LJ, McKenna SP, Tennant A, van der Heijde D, Chamberlain MA: The Development of the ASQOL: A quality of life instrument specific to Ankylosing Spondylitis. Ann Rheum Dis 2003, 62: 20–26. 10.1136/ard.62.1.20PubMedCentralPubMedCrossRef

Dagfinrud H, Kjeken I, Mowinckel P, Hagen KB, Kvien TK: Impact of functional impairment in ankylosing spondylitis: impairment, activity limitation and participation restrictions. J Rheumatol 2005, 32: 516–523.PubMed

Hunt SM, McKenna SP: A scale for the measurement of quality of life in depression. Health Policy 1992, 22: 307–319. 10.1016/0168-8510(92)90004-UPubMedCrossRef

McKenna SP, Whalley D, Dewar AL, Erdman RA, Kohlmann T, Niero M, Baro E, Cook SA, Crickx B, Frech F, van Assche D: International development of the Parents' Index of Quality of Life in Atopic Dermatitis (PIQoL-AD). Qual Life Res 2005, 14: 231–241. 10.1007/s11136-004-4231-zPubMedCrossRef

Whalley D, McKenna SP, Dewar AL, Erdman RA, Kohlmann T, Niero M, Cook SA, Crickx B, Herdman MJ, Frech F, Van Assche D: A New Instrument for Assessing Quality of Life in Atopic Dermatitis: International Development of the Quality of Life Index for Atopic Dermatitis (QoLIAD). Br J Dermatol 2004, 150: 274–283. 10.1111/j.1365-2133.2004.05783.xPubMedCrossRef

10.

McKenna SP, Cook SA, Whalley D, Doward LC, Richards HL, Griffiths CE, Van Assche D: Development of the PSORIQoL, a psoriasis-specific measure of quality of life designed for use in clinical practice and trials. Br J Dermatol 2003, 149: 323–331. 10.1046/j.1365-2133.2003.05492.xPubMedCrossRef

11.

McKenna SP, Doward LC, Alonso J, Kohlmann T, Niero M, Prieto L, Wiren L: The QoL-AGHDA: An instrument for the assessment of quality of life in adults with growth hormone deficiency. Qual Life Res 1999, 8: 373–383. 10.1023/A:1008987922774PubMedCrossRef

12.

Doward LC, McKenna SP, Kohlmann T, Niero M, Patrick D, Spencer B, Thorsen H: The international development of the RGHQoL: A quality of life measure for recurrent genital herpes. Qual Life Res 1998, 7: 143–153. 10.1023/A:1008857426633PubMedCrossRef

13.

de Jong Z, van der Heijde D, McKenna SP, Whalley D: The reliability and construct validity of the RAQoL: A rheumatoid arthritis-specific quality of life instrument. Br J Rheumat 1997, 36: 878–883. 10.1093/rheumatology/36.8.878CrossRef

14.

McKenna SP, Doward LC, Mackenzie Davey K: The development and psychometric properties of the MSQOL; a migraine-specific quality-of-life instrument. Clin Drug Invest 1998, 15: 413–423. 10.2165/00044011-199815050-00006CrossRef

15.

Wagner TH, Patrick DL, McKenna SP, Froese PS: Cross-cultural development of a quality of life measure for men with erection difficulties. Qual Life Res 1996, 5: 443–449. 10.1007/BF00449919PubMedCrossRef

16.

Holmes SJ, McKenna SP, Doward LC, Hunt SM, Shalet SM: Development of a questionnaire to assess the quality of life of adults with growth hormone deficiency. Endocrinol Metab 1995, 2: 63–69.

17.

McKenna SP, Hunt SM: A new measure of quality of life in depression: Testing the reliability and construct validity of the QLDS. Health Policy 1992, 22: 321–330. 10.1016/0168-8510(92)90005-VPubMedCrossRef

18.

Rasch G: Probabilistic Models for some intelligence and attainment tests. Chicago: University of Chicago Press; 1980.

19.

Zochling J, Braun J: Assessment of Ankylosing Spondylitis. Clin Exp Rheumatol 2005, 23: S133–141.PubMed

20.

Barkham N, Kong KO, Tennant A, Fraser A, Hensor E, Keenan AM, Emery P: The unmet need for anti-tumour necrosis factor therapy in ankylosing spondylitis. Rheumatology 2005, 44: 1277–1281. 10.1093/rheumatology/keh713PubMedCrossRef

21.

Tan AL, Marzo-Ortega H, O'Connor P, Fraser A, Emery P, McGonagle D: Efficacy of anakinra in active ankylosing spondylitis: a clinical and magnetic resonance imaging study. Ann Rheum Dis 2004, 63: 1041–1045. 10.1136/ard.2004.020800PubMedCentralPubMedCrossRef

22.

Lovas K, Pál G, Whalley D, McKenna SP, Meads D, Kaló Z: Hungarian adaptation of a disease-specific quality-of-life questionnaire in patients with ankylosing spondylitis (Hungarian). Orvosi Hetilap 2002, 143: 1893–1897.PubMed

23.

van der Heijde D, Kivitz A, Schiff MH, Sieper J, Dijkmans BAC, Braun J, Dougados M, Reveille JD, Wong RL, Kupper H, Davis JC Jr, ATLAS Study Group: Efficacy and Safety of Adalimumab in Patients With Ankylosing Spondylitis: Results of a Randomized, Placebo-Controlled Trial (ATLAS). Arthritis Rheum 2006, 54: 2136–2146. 10.1002/art.21913PubMedCrossRef

24.

Maksymowych WP, Rahman P, Keystone E, Wong R, Inman R: Efficacy of Adalimumab in Active Ankylosing Spondylitis (AS) – Results of the Canadian AS Study. Arthritis Rheum 2005, 52: S217.

25.

Swaine-Verdier A, Doward LC, Hagell P, Thorsen H, McKenna SP: Adapting Quality of Life Instruments. Value Health 2004, 7: S27-S30. 10.1111/j.1524-4733.2004.7s107.xPubMedCrossRef

26.

McKenna SP, Doward LC, Kohlmann T, Mercier C, Niero M, Paes M, Patrick D, Ramirez N, Thorsen H, Whalley D: International development of the Quality of Life in Depression Scale (QLDS). J Aff Disord 2001, 63: 189–199. 10.1016/S0165-0327(00)00184-1CrossRef

27.

Calin A, Garrett S, Whitelock L, Kennedy G, O'Hea J, Mallorie P, Jenkinson T: A new approach to Defining Functional Ability in Ankylosing Spondylitis: The Development of the Bath Ankylosing Spondylitis Functional Index. J Rheumatol 1994, 21: 2281–2285.PubMed

28.

Garrett S, Jenkinson T, Kennedy LG, Whitelock H, Gaisford P, Calin A: A new approach to defining disease status in Ankylosing Spondylitis: The Bath Ankylosing Spondylitis disease activity index. J Rheumatol 1994, 21: 2286–2291.PubMed

29.

Stewart AL, Hays RD, Ware JE: The MOS Short-Form General Health Survey. Reliability and validity in a patient population. Med Care 1988, 26: 724–735. 10.1097/00005650-198807000-00007PubMedCrossRef

30.

Doward LC, Meads DM, Thorsen H: Requirements for Quality of Life instruments in clinical research. Value Health 2004, 7: S13-S16. 10.1111/j.1524-4733.2004.7s104.xPubMedCrossRef

31.

Weiner EA, Stewart BJ: Assessing Individuals. Boston: Little Brown; 1984.

32.

Andrich D: Rasch Models for Measurement. London: Sage Publications; 1988.

33.

Wright B: Time 1 to time 2 comparison. Rasch Measurement Transactions 1996, 10: 478–479.

34.

Linacre JM: Sample size and item calibration stability. Rasch Measurement Transactions 1994, 7: 328.

Title: Translation and validation of non-English versions of the Ankylosing Spondylitis Quality of Life (ASQOL) questionnaire
Authors: Lynda C Doward
Stephen P McKenna
David M Meads
James Twiss
Dennis Revicki
Robert L Wong
Michelle P Luo
Publication date: 01-12-2007
Publisher: BioMed Central
Published in: Health and Quality of Life Outcomes / Issue 1/2007
Electronic ISSN: 1477-7525
DOI: https://doi.org/10.1186/1477-7525-5-7

At a glance: The STEP trials

Springer Medicine

Translation and validation of non-English versions of the Ankylosing Spondylitis Quality of Life (ASQOL) questionnaire

Abstract

Background

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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