This Article  • Full text  • PDF  • Reply to article  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Contact me when this article is cited  Related Content  • Related article  • Similar articles in this journal  Topic Collections  • Neurology  • Movement Disorders  • Parkinson Disease/ Parkinsonian Disorders  • Alert me on articles by topic  Social Bookmarking   What's this?

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

In reply

We are grateful for the point Drs Morgan and Sethi raised, and we returned to our initial data collection forms to determine the cause of this problem. We discovered that although the participating neurologists depicted their patients' H&Y stages using some half-point increments (stage 0, 1, 1.5, 2, 2.5, 3, 4, 5) in programming the data for analysis, these scores were inadvertently coded ordinally with values of 1, 2, 3, 4, 5, 6, 7, and 8, respectively. This produced the effect noted by Drs Morgan and Sethi, an artificial expansion of the upper end of the scale's range.

We have now rerun all analyses with the correct H&Y scores. The study subjects' mean score is now 1.8 rather than 3.6; patients taking only levodopa still had higher-than-average PD severity, although that score is now 2.4 rather than 4.6. A revised version of Table 3 is appended, reflecting these . . . [Full Text of this Article]

AUTHOR INFORMATION

Jerry Avorn, MD; Sebastian Schneeweiss, MD, ScD; Lewis R. Sudarsky, MD; Robert J. Glynn, PhD, ScD

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?

RELATED ARTICLE

Sudden Onset of Somnolence in Parkinson Disease
John C. Morgan and Kapil D. Sethi
Arch Neurol. 2006;63(3):467.
EXTRACT | FULL TEXT