References
- The WHOQOL Group. Study protocol for the World Health Organization project to develop a quality of life assessment instrument (the WHOQOL). Qual Life Res 1993;2:153–9.
- The WHOQOL Group. Development of the WHOQOL: ratio-nale and current status. Int .1- Mental Health 1994;23:24–56.
- The WHOQOL Group. The development of the World Health Organization Quality of Life Assessment Instrument (the WHOQOL). In: Orley J, Kuyken W, editors. Quality of life assessment: international perspectives. Heidelberg Springer Ver-lag; 1994. p. 41–57.
- The WHOQOL Group. The World Health Organization Qual-ity of Life assessment (WHOQOL): position paper from the World Health Organization. Soc Sci Med 1995;41:1403–9.
- World Health Organization. Quality of life assessment: an an-notated bibliography (WHO/MNH/PSF/94.1). Geneva: WHO; 1994.
- Szabo S, on behalf of the WHOQOL Group. The World Health Organization Quality of Life (WHOQOL) Assessment Instrument. In: Spilker B, editor. Quality of life and pharma-coeconomics in clinical trials, 2nd ed. New York: Lippincott-Raven Publishers; 1996. p. 355–62.
- The WHOQOL Group. Development of the World Health Or-ganization WHOQOL-BREF quality of life assessment. Psychol Med 1998;28:551–8.
- The WHOQOL Group. The World Health Organization Qual-ity of Life assessment (WHOQOL): development and general psychometric properties. Soc Sci Med 1998;46:1569–85.
- Ware JE, Gandek B. Overview of the SF36 Health Survey and the International Quality of Life Assessment (IQOLA) Project. In: Gandek B, Ware JE, editors. Translating functional health and well-being: international Quality of Life Assessment (IQOLA) Project Studies of the SF-36 Health Survey. J Clin Epidemiol 1998;51: 903–12.
- Bjorner JB, Thunedborg K, Kristensen TS, Modvig J, Bech P. The Danish SF36 Health Survey: translation and preliminary validity studies. J Clin Epidemiol 1998;51: 991–9.
- Bjorner JB, Kreiner S, Ware JE, Damsgaard MT, Bech P. Differential item functioning in the Danish translation of SF36. J Clin Epidemiol 1998;51: 1189–202.
- Satorius N, Kuyken W. Translation of health status instru-ments. In: Orley J, Kuyken W, editors. Quality of life assess-ment: international perspectives. Heidelberg: Springer Verlag; 1994. p. 3–18.
- The WHOQOL Group. Resources for New WHOQOL Centres MNH/PSF/95.2, Protocol for New Centres WHOQOL MNH/ PSF/94.4, WHOQOL Study Protocol MNH/PSF/93.9. WHO. 1996.
- Szabo S, Orley J, Saxena S. An approach to response scale development for cross-cultural questionnaire. Eur Psychol 1997;2:270–6.
- Bech P. The Bech, Hamilton and Zung Scales for Mood Disor-ders: screening and listening, 2nd ed. Berlin: Springer Verlag; 1996.
- Bech P. Rating scales for psychopathology, health status, and quality of life. Berlin: Springer Verlag; 1993.
- Mokken RJ. A theory and procedure of scale analysis. Paris: Mouton; 1971.
- Molenaar W, Debets P, Sijtsma K, Hemker BT. User's manual MSP: a program for Mokken Scale analysis for polytomous items (version 3.0). Groningen: iec ProGamma; 1994.
- Nunnally JC, Bernstein IH. Psychometric theory, 3rd ed. New York: McGraw-Hill Inc; 1994.
- Siegel S, Castellan NJ Jr. Nonparametric statistics for the be-havioural science, 2nd ed. Singapore: McGraw Hill; 1988.
- Streiner DL, Norman GR. Health measurement scales. A prac-tical guide to their development and use, 2nd edn. Oxford: Oxford University Press; 1998.
- Bonomi AE, Patrick DL, Bushnell DM, Martin M. Validation of the United States' version of the World Health Organization Quality of Life (WHOQOL) instrument. J Clin Epidemiol 2000;53:1–12.
- Orley J, Saxena S, Herrman H. Quality of life and mental illness. Br J Psychiatry 1998;172:291–3.