Evaluation of Quality of Life instruments for use in COPD care and research: A systematic review

International Journal of Nursing Studies

Volumn 50, Issue 5, 2013, Pages 688-707

  Weldam, Saskia W M ^a   Schuurmans, Marieke J ^a   Liu, Rani ^a   Lammers, Jan Willem J ^a  

^a UNIVERSITY MEDICAL CENTER UTRECHT   (Netherlands)

Author keywords

Chronic Obstructive Pulmonary Disease (COPD); Instrument characteristics; Measurement properties; Patient reported outcomes; Psychometric properties; Quality of Life (QoL); Questionnaire characteristics

Indexed keywords

CHRONIC OBSTRUCTIVE LUNG DISEASE; HUMAN; PATHOPHYSIOLOGY; QUALITY OF LIFE; REVIEW;

HUMANS; PULMONARY DISEASE, CHRONIC OBSTRUCTIVE; QUALITY OF LIFE;

EID: 84875814211     PISSN: 00207489     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijnurstu.2012.07.017     Document Type: Review

References (99)

1. Aaron S.D., Vandemheen K.L., Clinch J.J., Ahuja J., Brison R.J., Dickinson G., Hebert P.C. Measurement of short-term changes in dyspnea and disease-specific quality of life following an acute COPD exacerbation. Chest 2002, 121(3):688-696.
2. Abma F.I., van der Klink J.J., Terwee C.B., Amick Iii B.C., Bultmann U. Evaluation of the measurement properties of self-reported health-related work-functioning instruments among workers with common mental disorders. Scandinavian Journal of Work, Environment & Health 2012, 38(1):5-18.
3. Al Moamary M.S., Tamim H.M. The reliability of an Arabic version of the self-administered standardized chronic respiratory disease questionnaire (CRQ-SAS). BMC Pulmonary Medicine 2011, 11:21.
4. Alemayehu B., Aubert R.E., Feifer R.A., Paul L.D. Comparative analysis of two quality-of-life instruments for patients with chronic obstructive pulmonary disease. Value in Health: The Journal of the International Society for Pharmacoeconomics and Outcomes Research 2002, 5(5):437-442.
5. Al-Ghimlas F., Al-Omran M., Guyatt G.H. Linguistic validation of the Chronic Respiratory Disease Questionnaire in an Arabic-speaking population with chronic respiratory diseases. Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre 2011, 20(4):387-389.
6. Alonso J., Prieto L., Ferrer M., Vilagut G., Broquetas J.M., Roca J., Batlle J.S., Anto J.M. Testing the measurement properties of the Spanish version of the SF-36 Health Survey among male patients with chronic obstructive pulmonary disease. Quality of Life in COPD Study Group. Journal of Clinical Epidemiology 1998, 51(11):1087-1094.
7. Aslani J., Mirzamani S.M., AzizAbadi-Farahani M., Lankarani M.M., Assari S. Health-related quality of life in chronic obstructive pulmonary disease: are disease-specific and generic quality of life measures correlated?. Tanaffos 2008, 7(2):28-35.
8. Barr J.T., Schumacher G.E., Freeman S., LeMoine M., Bakst A.W., Jones P.W. American translation, modification, and validation of the St. George's Respiratory Questionnaire. Clinical Therapeutics 2000, 22(9):1121-1145.
9. Blanco-Aparicio M., Vazquez M.I., Romero-Frais E., Seoane G., Verea-Hernando H. Validation of a Spanish version of the Airways Questionnaire 20: a short and simple instrument. Quality of Life Research: An International Journal of Quality of Life Aspects of treatment, Care and Rehabilitation 2010, 19(8):1235-1240.
10. Bourbeau J., Maltais F., Rouleau M., Guimont C. French-Canadian version of the Chronic Respiratory and St. George's Respiratory questionnaires: an assessment of their psychometric properties in patients with chronic obstructive pulmonary disease. Canadian Respiratory Journal: Journal of the Canadian Thoracic Society 2004, 11(7):480-486.
11. Carr A.J., Gibson B., Robinson P.G. Is quality of life determined by expectations or experience?. BMJ 2001, 322(7296):1240-1243.
12. Chan L.L.C., Tam K., Chan E., Ng B., So C.T. Reliability and validity of the Chinese version of the chronic respiratory questionnaire (CCRQ) in patients with COPD. Hong Kong Journal of Occupational Therapy 2006, 16:9-15.
13. Chen H., Eisner M.D., Katz P.P., Yelin E.H., Blanc P.D. Measuring disease-specific quality of life in obstructive airway disease: validation of a modified version of the airways questionnaire 20. Chest 2006, 129(6):1644-1652.
14. Damato S., Bonatti C., Frigo V., Pappagallo S., Raccanelli R., Rampoldi C., Rodi F. Validation of the clinical COPD questionnaire in Italian language. Health and Quality of Life Outcomes 2005, 3(1):9.
15. Decramer M., Sibille Y., Bush A., Carlsen K., Rabe K.F., Clancy L., Turnbull A., Nemery B., Simonds A., Troosters T. The European Union conference on chronic respiratory disease: purpose and conclusions. European Respiratory Journal 2011, 37(4):738-742.
16. Desikan R., Mason H.L., Rupp M.T., Skehan M. Health-related quality of life and healthcare resource utilization by COPD patients: a comparison of three instruments. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2002, 11(8):739-751.
17. Dodd J.W., Hogg L., Nolan J., Jefford H., Grant A., Lord V.M., Falzon C., Garrod R., Lee C., Polkey M.I., Jones P.W., Man W.D., Hopkinson N.S. The COPD assessment test (CAT): response to pulmonary rehabilitation. A multicentre, prospective study. Thorax 2011, 66(5):425-429.
18. Dodd J.W., Marns P.L., Clark A.L., Ingram K.A., Fowler R.P., Canavan J.L., Patel M.S., Kon S.S., Hopkinson N.S., Polkey M.I., Jones P.W., Man W.D. The COPD assessment test (CAT): short- and medium-term response to pulmonary rehabilitation. COPD 2012, (Epub ahead of print).
19. Doll H., Duprat-Lomon I., Ammerman E., Sagnier P.P. Validity of the St. George's respiratory questionnaire at acute exacerbation of chronic bronchitis: comparison with the Nottingham health profile. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2003, 12(2):117-132.
20. Duiverman M.L., Wempe J.B., Bladder G., Kerstjens H.A., Wijkstra P.J. Health-related quality of life in COPD patients with chronic respiratory failure. The European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology 2008, 32(2):379-386.
21. Eaton T., Young P., Fergusson W., Garrett J.E., Kolbe J. The Dartmouth COOP Charts: a simple, reliable, valid and responsive quality of life tool for chronic obstructive pulmonary disease. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2005, 14(3):575-585.
22. Engstrom C.P., Persson L.O., Larsson S., Sullivan M. Reliability and validity of a Swedish version of the St. George's Respiratory Questionnaire. The European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology 1998, 11(1):61-66.
23. Fallah Tafti S., Cheraghvandi A., Marashian M., Emami H., Mokri B. Measurement of the validity and reliability of the persian translation of the St. George's Respiratory Questionnaire for patients with chronic obstructive pulmonary disease. The Open Respiratory Medicine Journal 2009, 3:107-111.
24. Ferrer M., Alonso J., Prieto L., Plaza V., Monso E., Marrades R., Aguar M.C., Khalaf A., Anto J.M. Validity and reliability of the St. George's Respiratory Questionnaire after adaptation to a different language and culture: the Spanish example. The European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology 1996, 9(6):1160-1166.
25. Furlan A.D., Penninc V., Bombardier C., van Tulder M. Editorial Board Cochrane Back Review Group 2009 updated method guidelines for systematic reviews in the Cochrane Back Review Group. Spine 2009, 34(18):1929-1941.
26. GOLD, 2011. Global Strategy for the Diagnosis, Management and Prevention of COPD, Global Initiative for Chronic Obstructive Lung Disease (GOLD), (January 10th).
27. Guell R., Casan P., Sangenis M., Morante F., Belda J., Guyatt G. Quality of life in patients with chronic respiratory disease: the Spanish version of the Chronic Respiratory Questionnaire (CRQ). European Respiratory Journal 1998, 11(1):55-60.
28. Guyatt G.H., Berman L.B., Townsend M., Pugsley S.O., Chambers L.W. A measure of quality of life for clinical trials in chronic lung disease. Thorax 1987, 42(10):773-778.
29. Guyatt G.H., Feeny D.H., Patrick D.L. Measuring Health-related quality of life. Annals of Internal Medicine 1993, 118(8):622-629.
30. Hajiro T., Nishimura K., Tsukino M., Ikeda A., Koyama H., Izumi T. Comparison of discriminative properties among disease-specific questionnaires for measuring health-related Quality of Life in patients with chronic obstructive pulmlonary disease. American Journal of Respiratory and Critical Care Medicine 1998, 157(3):785-790.
31. Hajiro T., Nishimura K., Jones P.W., Tsukino M., Ikeda A., Koyama H., Izumi T. A novel, short, and simple questionnaire to measure health-related quality of life in patients with chronic obstructive pulmonary disease. American Journal of Respiratory and Critical Care Medicine 1999, 159(6):1874-1878.
32. Harper R., Brazier J.E., Waterhouse J.C., Walters S.J., Jones N.M., Howard P. Comparison of outcome measures for patients with chronic obstructive pulmonary disease (COPD) in an outpatient setting. Thorax 1997, 52(10):879-887.
33. Higginson I.J., Carr A.J. Using quality of life measures in the clinical setting. BMJ 2001, 322(7297):1297-1300.
34. Hutter B.O., Wurtemberger G. Reliability and validity of the German version of the Sickness Impact Profile in patients with chronic obstructive pulmonary disease. Psychology & Health 1997, 12(2):149-159.
35. Jans M.P., Schellevis F.G., van Eijk J.T. The Nottingham Health Profile: score distribution, internal consistency and validity in asthma and COPD patients. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 1999, 8(6):501-507.
36. Jones P.W. COPD: functional status, health status and primary care. Primary Care Respiratory Journal: Journal of the General Practice Airways Group 2011, 20(3):227-228.
37. Jones P.W. Issues concerning health-related quality of life in COPD. Chest 1995, 107(5 Suppl.):187S-193S.
38. Jones P.W., Brusselle G., Dal Negro R.W., Ferrer M., Kardos P., Levy M.L., Perez T., Soler Cataluna J.J., van der Molen T., Adamek L., Banik N. Properties of the COPD assessment test in a cross-sectional European study. The European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology 2011, 38(1):29-35.
39. Jones P.W., Harding G., Berry P., Wiklund I., Chen W.H., Kline Leidy N. Development and first validation of the COPD assessment test. The European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology 2009, 34(3):648-654.
40. Jones P.W., Harding G., Wiklund I., Berry P., Tabberer M., Yu R., Leidy N.K. Tests of the responsiveness of the Chronic Obstructive Pulmonary Disease (COPD) assessment test TM (CAT) following acute exacerbation and pulmonary rehabilitation. Chest 2012.
41. Jones P.W., Quirk F.H., Baveystock C.M. The St. George's Respiratory Questionnaire. Respiratory Medicine 1991, 85(Suppl. B):25-31. Discussion, 33-7.
42. Kaplan R.M., Ries A.L., Reilly J., Mohsenifar Z. Measurement of health-related quality of life in the National Emphysema Treatment Trial. Chest 2004, 126(3):781-789.
43. Kaplan R.M., Ries A.L. Quality of life: concept and definition. COPD 2007, 4(3):263-271.
44. Katsoulas T.A., Skordilis E.K., Myrianthefs P., Fildisis G., Theodosopoulou E., Baltopoulos G. Validity of St. George's Respiratory Questionnaire for Greek patients with chronic obstructive pulmonary disease. Perceptual and Motor Skills 2010, 110(3 Pt 1):772-788.
45. Katsura H., Yamada K., Kida K. Usefulness of a linear analog scale questionnaire to measure health-related quality of life in elderly patients with chronic obstructive pulmonary disease. Journal of the American Geriatrics Society 2003, 51(8):1131-1135.
46. Kocks J., Kerstjens H., Snijders S., de Vos B., Biermann J., van Hengel P., Strijbos J., Bosveld H., van d.M. Health status in routine clinical practice: validity of the clinical COPD questionnaire at the individual patient level. Health and Quality of Life Outcomes 2010, 8(1):135.
47. Liang W.M., Chen J.J., Chang C.H., Chen H.W., Chen S.L., Hang L.W., Wang J.D. An empirical comparison of the WHOQOL-BREF and the SGRQ among patients with COPD. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2008, 17(5):793-800.
48. Mackay A.J., Donaldson G.C., Patel A.R., Jones P.W., Hurst J.R., Wedzicha J.A. Usefulness of the chronic obstructive pulmonary disease assessment test to evaluate severity of COPD exacerbations. American Journal of Respiratory and Critical Care Medicine 2012, 185(11):1218-1224.
49. Mahler D.A. How should health-related quality of life be assessed in patients with COPD?. Chest 2000, 117(Suppl. 2):54S-57S.
50. Mahler D.A., Mackowiak J.I. Evaluation of the short-form 36-item questionnaire to measure health-related quality of life in patients with COPD. Chest 1995, 107(6):1585-1589.
51. Maly M., Vondra V. Generic versus disease-specific instruments in quality-of-life assessment of chronic obstructive pulmonary disease. Methods of Information in Medicine 2006, 45(2):211-215.
52. Martin L.L. Validity and reliability of a quality-of-life instrument: the chronic respiratory disease questionnaire. Clinical Nursing Research 1994, 3(2):146-156.
53. Mazur W., Kupiainen H., Pitkaniemi J., Kilpelainen M., Sintonen H., Lindqvist A., Kinnula V.L., Laitinen T. Comparison between the disease-specific Airways Questionnaire 20 and the generic 15D instruments in COPD. Health and Quality of Life Outcomes 2011, 9:4.
54. McKenna S.P., Meads D.M., Doward L.C., Twiss J., Pokrzywinski R., Revicki D., Hunter C.J., Glendenning G.A. Development and validation of the living with chronic obstructive pulmonary disease questionnaire. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2011, 20(7):1043-1052.
55. McKenna S.P., Twiss J., Crawford S.R., Oprandi N.C., Tammaru M., Miravitlles M. The living with chronic obstructive pulmonary disease scale was successfully adapted for use in Southern European (Italian and Spanish) and Eastern European (Russian) cultures. Journal of Clinical Epidemiology 2012, 65(8):906-914.
56. Meguro M., Barley E.A., Spencer S., Jones P.W. Development and validation of an improved COPD-specific version of the St. George Respiratory Questionnaire. Chest 2007, 132(2):456-463.
57. Menn P., Weber N., Holle R. Health-related quality of life in patients with severe COPD hospitalized for exacerbations - comparing EQ-5D SF-12 and SGRQ. Health and Quality of Life Outcomes 2010, 8:39.
58. Mokkink L.B., Terwee C.B., Knol D.L., Stratford P.W., Alonso J., Patrick D.L., Bouter L.M., De Vet H. The COSMIN checklist for evaluating the methodological quality of studies on measurement properties: a clarification of its content. BMC Medical Research Methodology 2010, 10:22.
59. Mokkink L.B., Terwee C.B., Patrick D.L., Alonso J., Stratford P.W., Knol D.L., Bouter L.M., de Vet H. The COSMIN study reached international consensus on taxonomy, terminology, and definitions of measurement properties for health-related patient-reported outcomes. Journal of Clinical Epidemiology 2010, 63:737-745.
60. Mokkink L.B., Terwee C.B., Patrick D.L., Alonso J., Stratford P.W., Knol D.L., Bouter L.M., De Vet H. The COSMIN checklist for assessing the methodological quality of studies on measurement properties of health status measurement instruments: an international Delphi study. Quality Life Research 2010, 19:539-549.
61. Mokkink L., Terwee C., Gibbons E., Stratford P., Alonso J., Patrick D., Knol D., Bouter L., de Vet H. Inter-rater agreement and reliability of the COSMIN (Consensus-based Standards for the Selection of Health Status Measurement Instruments) checklist. BMC Medical Research Methodology 2010, 10(1):82.
62. Molen van der T., Willemse B., Schokker S., ten Hacken N., Postma D., Juniper E. Development, validity and responsiveness of the Clinical COPD Questionnaire. Health and Quality of Life Outcomes 2003, 1(1):13.
63. Moons P., Budts W., De Geest S. Critique on the conceptualisation of quality of life: a review and evaluation of different conceptual approaches. International Journal of Nursing Studies 2006, 43(7):891-901.
64. Nishimura K., Oga T., Ikeda A., Hajiro T., Tsukino M., Koyama H. Comparison of health-related quality of life measurements using a single value in patients with asthma and chronic obstructive pulmonary disease. The Journal of Asthma: Official Journal of the Association for the Care of Asthma 2008, 45(7):615-620.
65. Nishiyama O., Taniguchi H., Kondoh Y., Nishimura K., Suzuki R., Takagi K., Yamaki K. The effectiveness of the visual analogue scale 8in measuring health-related quality of life for COPD patients. Respiratory Medicine 2000, 94(12):1192-1199.
66. Ozalevli S., Karaali H., Cankurtaran F., Kilinc O., Akkoclu A. Comparison of Short Form-36 Health Survey and Nottingham Health Profile in moderate to severe patients with COPD. Journal of Evaluation in Clinical Practice 2008, 14(4):493-499.
67. Pakhale S., Wood-Dauphinee S., Spahija J., Collet J.P., Maltais F., Bernard S., Baltzan M., Rouleau M., Bourbeau J. Combining both generic and disease-specific properties: development of the McGill COPD quality of life questionnaire. COPD 2011, 8(4):255-263.
68. Papadopoulos G., Vardavas C., Limperi M., Linardis A., Georgoudis G., Behrakis P. Smoking cessation can improve quality of life among COPD patients: validation of the clinical COPD questionnaire into Greek. BMC Pulmonary Medicine 2011, 11(1):13.
69. Paterson C., Langan C.E., McKaig G.A., Anderson P.M., Maclaine G.D., Rose L.B., Walker S.J., Campbell M.J. Assessing patient outcomes in acute exacerbations of chronic bronchitis: the measure your medical outcome profile (MYMOP), medical outcomes study 6-item general health survey (MOS-6A) and EuroQol (EQ-5D). Quality of Life Research: An International Journal of Quality of life Aspects of Treatment, Care and Rehabilitation 2000, 9(5):521-527.
70. Perez T., Arnould B., Grosbois J.M., Bosch V., Guillemin I., Bravo M.L., Brun M., Tonnel A.B. Validity, reliability, and responsiveness of a new short Visual Simplified Respiratory Questionnaire (VSRQ) for health-related quality of life assessment in chronic obstructive pulmonary disease. International Journal of Chronic Obstructive Pulmonary Disease 2009, 4:9-18. TIPHON Study Group.
71. Pickard A.S., Yang Y., Lee T.A. Comparison of health-related quality of life measures in chronic obstructive pulmonary disease. Health and Quality of Life Outcomes 2011, 9:26.
72. Prieto L., Alonso J., Ferrer M., Anto J.M. Are results of the SF-36 health survey and the Nottingham Health Profile similar? A comparison in COPD patients. Quality of Life in COPD Study Group, Journal of Clinical Epidemiology 1997, 50(4):463-473.
73. Puhan M.A., Behnke M., Frey M., Grueter T., Brandli O., Lichtenschopf A., Guyatt G.H., Schunemann H.J. Self-administration and interviewer-administration of the German Chronic Respiratory Questionnaire: instrument development and assessment of validity and reliability in two randomised studies. Health and Quality of Life Outcomes 2004, 2:1.
74. Puhan M.A., Guyatt G.H., Goldstein R., Mador J., McKim D., Stahl E., Griffith L., Schünemann H.J. Relative responsiveness of the Chronic Respiratory Questionnaire, St. George's Respiratory Questionnaire and four other health-related quality of life instruments for patients with chronic lung disease. Respiratory Medicine 2007, 101(2):308-316.
75. Reardon J.Z., Lareau S.C., ZuWallack R. Functional status and quality of life in chronic obstructive pulmonary disease. The American Journal of Medicine 2006, 119(10 Suppl. 1):32-37.
76. Reda A.A., Kotz D., Kocks J.W., Wesseling G., van Schayck C.P. Reliability and validity of the clinical COPD questionnaire and chronic respiratory questionnaire. Respiratory Medicine 2010, 104(11):1675-1682.
77. Ringbaek T., Martinez G., Lange P. A comparison of the assessment of quality of life with CAT CCQ, and SGRQ in COPD patients participating in pulmonary rehabilitation. COPD 2012, 9(1):12-15.
78. Rosenberg R. Health-related quality of life between naturalism and hermeneutics. Social Science & Medicine 1995, 41(10):1411-1415.
79. Rutten-van Molken M., Roos B., Van Noord J.A. An empirical comparison of the St. George's Respiratory Questionnaire (SGRQ) and the Chronic Respiratory Disease Questionnaire (CRQ) in a clinical trial setting. Thorax 1999, 54(11):995-1003.
80. Rutten-van Molken M.P., Oostenbrink J.B., Tashkin D.P., Burkhart D., Monz B.U. Does quality of life of COPD patients as measured by the generic EuroQol five-dimension questionnaire differentiate between COPD severity stages?. Chest 2006, 130(4):1117-1128.
81. Schellingerhout J.M., Verhagen A.P., Heymans M.W., Koes B.W., de Vet H.C., Terwee C.B. Measurement properties of disease-specific questionnaires in patients with neck pain: a systematic review. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2012, 21(4):659-670.
82. Schunemann H.J., Puhan M., Goldstein R., Jaeschke R., Guyatt G.H. Measurement properties and interpretability of the chronic respiratory disease questionnaire (CRQ). COPD 2005, 2(1):81-89.
83. Singh S.J., Sodergren S.C., Hyland M.E., Williams J., Morgan M.D. A comparison of three disease-specific and two generic health-status measures to evaluate the outcome of pulmonary rehabilitation in COPD. Respiratory Medicine 2001, 95(1):71-77.
84. Stallberg B., Nokela M., Ehrs P., Hjemdal P., Jonsson E. Validation of the Clinical COPD Questionnaire (CCQ) in primary care. Health and Quality of Life Outcomes 2009, 7(1):26.
85. Stavem K. Reliability, validity and responsiveness of two multiattribute utility measures in patients with chronic obstructive pulmonary disease. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 1999, 8(1-2):45-54.
86. Stavem K., Erikssen J., Boe J. Performance of a short lung-specific health status measure in outpatients with chronic obstructive pulmonary disease. Respiratory Medicine 1999, 93(7):467-475.
87. Stavem K., Jodalen H. Reliability and validity of the COOP/WONCA health status measure in patients with chronic obstructive pulmonary disease. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation 2002, 11(6):527-533.
88. Terwee C.B., Mokkink L.B., Knol D.L., Ostelo R.W., Bouter L.M., de Vet H.C. Rating the methodological quality in systematic reviews of studies on measurement properties: a scoring system for the COSMIN checklist. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care, and Rehabilitation 2012, 21(4):651-657.
89. Terwee C.B., Bot S.D.M., de Boer M.R., van der Windt D.A.W.M., Knol D.L., Dekker J., Bouter L.M., de Vet H.C.W. Quality criteria were proposed for measurement properties of health status questionnaires. Journal of Clinical Epidemiology 2007, 60(1):34-42.
90. de Torres J.P., Pinto-Plata V., Ingenito E., Bagley P., Gray A., Berger R., Celli B. Power of outcome measurements to detect clinically significant changes in pulmonary rehabilitation of patients with COPD. Chest 2002, 121(4):1092-1098.
91. Tsai C.L., Hodder R.V., Page J.H., Cydulka R.K., Rowe B.H., Camargo C.A. The short-form chronic respiratory disease questionnaire was a valid, reliable, and responsive quality-of-life instrument in acute exacerbations of chronic obstructive pulmonary disease. Journal of Clinical Epidemiology 2008, 61(5):489-497.
92. Tsiligianni I.G., van der Molen T., Moraitaki D., Lopez I., Kocks J.W., Karagiannis K., Siafakas N., Tzanakis N. Assessing health status in COPD. A head-to-head comparison between the COPD assessment test (CAT) and the clinical COPD questionnaire (CCQ). BMC Pulmonary Medicine 2012, 12(1):20.
93. Tsukino M., Nishimura K., McKenna S.P., Ikeda A., Hajiro T., Zhang M., Izumi T. Change in generic and disease-specific health-related quality of life during a one-year period in patients with newly detected chronic obstructive pulmonary disease. Respiration; International Review of Thoracic Diseases 2002, 69(6):513-520.
94. Wijkstra P.J., TenVergert E.M., Van Altena R., Otten V., Postma D.S., Kraan J., Koeter G.H. Reliability and validity of the chronic respiratory questionnaire (CRQ). Thorax 1994, 49(5):465-467.
95. Williams J.E.A., Singh S.J., Sewell L., Guyatt G.H., Morgan M.D.L. Development of a self-reported chronic respiratory questionnaire (CRQ-SR). Thorax 2001, 56(12):954-959.
96. Windisch W., Budweiser S., Heinemann F., Pfeifer M., Rzehak P. The severe respiratory insufficiency questionnaire was valid for COPD patients with severe chronic respiratory failure. Journal of Clinical Epidemiology 2008, 61(8):848-853.
97. Wyrwich K.W., Tierney W.M., Wolinsky F.D. Further evidence supporting an SEM-based criterion for identifying meaningful intra-individual changes in health-related quality of life. Journal of Clinical Epidemiology 1999, 52(9):861-873.
98. Xu W., Collet J.P., Shapiro S., Lin Y., Yang T., Wang C., Bourbeau J. Validation and clinical interpretation of the St. George's Respiratory Questionnaire among COPD patients, China. The International Journal of Tuberculosis and Lung Disease: The Official Journal of the International Union Against Tuberculosis and Lung Disease 2009, 13(2):181-189.
99. Yu D.T.W., Scudds R.J., Scudds R.A. Reliability and validity of a Hong Kong Chinese version of the St. George's Respiratory Questionnaire in patients with COPD. Hong Kong Physiotherapy Journal 2004, 22:33-39.