title: Tremor magnitude: a single index to assess writing and drawing in essential tremor.
abstract: Hand tremor often causes disability in patients with essential tremor (ET). Aim of the study was to investigate whether tremor magnitude, a new single quantitative score obtained from digital tablet recordings of writing and drawing, is able to adequately reflect disability in ET patients. Mean tremor magnitude values showed significant difference between 14 ET patients and 14 healthy age matched controls (p<0.0001). The tremor magnitude values showed significant correlation with standard methods of clinical assessment (p<0.01). We present tremor magnitude as an index that reflects disability resulting from tremor and can help to evaluate ET.
authors.affiliation: Department of Neurology, 1st Medical Faculty, Charles University Katerinská 30, 12000 Praha, Czech Republic.
authors.forename: Olga
authors.initials: O
authors.lastname: Ulmanová
authors.forename: Carl Nikolaus
authors.initials: CN
authors.lastname: Homann
authors.forename: Radek
authors.initials: R
authors.lastname: Ulman
authors.forename: Robert
authors.initials: R
authors.lastname: Jech
authors.forename: Václav
authors.initials: V
authors.lastname: Capek
authors.forename: Jirí
authors.initials: J
authors.lastname: Klempír
authors.forename: Evzen
authors.initials: E
authors.lastname: Růzicka
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D020329:Essential Tremor / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011597:Psychomotor Performance / Q000502:physiology*; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D014956:Writing