1. Schrag A, Jahanshahi M, Quinn N. How does Parkinson’s disease affect quality of life? A comparison with quality of life in the general population. Mov Dis. 2000;15:1112-1118. [PubMed] 2. Fahn S, Elton RL, for the UPDRS Development Committee. Unified Parkinson’s Disease Rating Scale. In: Fahn S, Marsden CD, Calne D, Goldstein M, eds. Recent Developments in Parkinson’s Disease. Vol. 2. Florham Park, NJ: MacMillan Healthcare Information; 1987:153-163. 3. Rahman S, Griffin HJ, Quinn NP, Jahanshahi M. Quality of life in Parkinson’s disease: the relative importance of the symptoms. Mov Disord. 2008;23:1428-1434. [PubMed] 4. Siderowf A. Quality-of-life outcomes following stereotactic surgery for Parkinson’s disease. In: Baltuch GH, Stern MB, eds. Deep Brain Stimulation for Parkinson's Disease (Neurological Disease and Therapy). New York, NY: Informa Healthcare USA, Inc; 2007:285-298. 5. Jenkinson C, Fitzpatrick R, Peto V. Health-related quality-of-life measurement in patients with Parkinson’s disease. Pharmacoeconomics. 1999;15:157-165. [PubMed]
6. de Boer AG, Wijker W, Speelman JD, et al. Quality of life in patients with Parkinson’s disease: development of a questionnaire. J Neurol Neurosurg Psychiatry. 1996;61:70-74. [PubMed] 7. Peto V, Jenkinson C, Fitzpatrick R, et al. The development and validation of a short measure of functioning and well being for individuals with Parkinson’s disease. Qual Life Res. 1995;4:241-248. [PubMed] 8. Schrag A, Selai C, Jahanshahi M, Quinn NP. The EQ-5D—a generic quality of life measure—is a useful instrument to measure quality of life in patients with Parkinson’s disease. J Neurol Neurosurg Psychiatry. 2000;69:67-73. [PubMed] 9. Welsh M, McDermott MP, Holloway RG, et al. Development and testing of the Parkinson’s Disease Quality of Life Scale. Mov Disord. 2003;18:637-645. [PubMed] 10. Marinus J, Ramaker C, van Hilten JJ, Stiggelbout AM. Health related quality of life in Parkinson’s disease: a systematic review of disease specific instruments. J Neurol Neurosurg Psychiatry. 2002;72:241-248. [PubMed]
11. Martinez-Martin P, Serrano-Dueñas M, Forjaz MJ, Serrano MS. Two questionnaires for Parkinson’s disease: are the PDQ-39 and PDQL equivalent? Qual Life Res. 2007;16:1221-1230. [PubMed] 12. Dowding CH, Shenton CL, Salek SS. A review of the health-related quality of life and economic impact of Parkinson’s disease. Drugs Aging. 2006;23: 693-721. [PubMed] 13. EuroQol Group. EuroQol: a new facility for the measurement of healthrelated quality of life. Health Policy. 1990;16:199-208. [PubMed] 14. Jenkinson C, Coulter A, Wright L. Short Form 36 (SF-36) Health Survey Questionnaire: normative data for adults of working age. BMJ. 1993;306:1437- 1440. [PubMed] 15. Chapuis S, Ouchchane L, Metz O, et al. Impact of the motor complications of Parkinson’s disease on the quality of life. Mov Disord. 2005;20:224-230. [PubMed]
16. Damiano AM, McGrath MM, Willian MK, et al. Evaluation of a measurement strategy for Parkinson’s disease: assessing patient health-related quality of life. Qual Life Res. 2000;9:87-100. [PubMed] 17. Péchevis M, Clarke CE, Vieregge P, et al. Effects of dyskinesias in Parkinson’s disease on quality of life and health-related costs: a prospective European study. Eur J Neurol. 2005;12:956-963. [PubMed] 18. Michalowska M, Fiszer U, Krygowska-Wajs A, Owczarek K. Falls in Parkinson’s disease. Causes and impact on patients’ quality of life. Funct Neurol. 2005;20:1163-168. [PubMed] 19. Michalowska M, Krygowska-Wajs A, Jedynecka U, Sobieszek A, Fiszer U. Analysis of the cause of falls in patients with Parkinson’s disease. Neurol Neurochir Pol. 2002;36:57-68. [PubMed] 20. Wood BH, Bilclough JA, Bowron A, Walker RW. Incidence and prediction of falls in Parkinson’s disease: a prospective multidisciplinary study. J Neurol Neurosurg Psychiatry. 2002;72:721-725. [PubMed]
21. King MB, Tinetti ME. Falls in community-dwelling older persons. J Am Geriatr Soc. 1995;43:1146-1154. [PubMed] 22. Karlsen KH, Tandberg E, Arsland D, et al. Health related quality of life in Parkinson’s disease: a prospective longitudinal study. J Neurol Neurosurg Psychiatry. 2000;69:584-589. [PubMed] 23. Marras C, Lang A, Krahn M, Tomlinson G, Naglie G, and[? or “for”] the Parkinson Study Group. Quality of life in early Parkinson’s disease: impact of dyskinesias and motor fluctuations. Mov Dis. 2004;19:22-28. [PubMed] 24. Schrag A. Quality of life and depression in Parkinson’s disease. J Neurol Sci. 2006;248:151-157. [PubMed] 25. Kuopio AM, Marttila RJ, Helenius H, Toivonen M, Rinne UK. The quality of life in Parkinson’s disease. Mov Disord. 2000;15:216-233. [PubMed]
26. Karlsen KH, Larsen JP, Tandberg E, Maeland JG. Influence of clinical and demographic variables on quality of life in patients with Parkinson’s disease. J Neurol Neurosurg Psychiatry. 1999;66:431-435. [PubMed] 27. Marras C, McDermott MP, Rochon PA, et al. Predictors of deterioration in health-related quality of life in Parkinson’s disease: results from the DATATOP trial. Mov Disord. 2008;23:653-659. [PubMed] 28. Schrag A, Jahanshabi M, Quinn N. What contributes to quality of life in patients with Parkinson’s disease? J Neurol Neurosurg Psychiatry. 2000;69:308-312. [PubMed] 29. Zach M, Friedman A, Slawek J, et al. Quality of life in Polish patients with long-lasting Parkinson’s disease. Mov Disord. 2004;19:667-672. [PubMed] 30. Global Parkinson’s Disease Survey (GPDS) Steering Committee. Factors impacting on quality of life in Parkinson’s disease: results from an international survey. Mov Disord. 2002;17:60-67. [PubMed]
