Incidence of essential tremor in three elderly populations of Central Spain

Julian Benito-León, Félix Bermejo-Pareja, Elan D. Louis

Research output: Contribution to journalArticlepeer-review

137 Scopus citations

Abstract

Objective: To estimate the incidence of essential tremor (ET) in three populations in central Spain using data from the Neurologic Disorders in Central Spain (NEDICES), a population-based survey of elderly subjects (65 years and older). Methods: Individuals were evaluated at baseline (1994 to 1995) and at follow-up (a median of 3.3 years later in 1997 to 1998). The evaluation included a screening question for ET and a neurologic examination, when possible. Results: Of 5,278 subjects evaluated at baseline, there were 256 prevalent ET cases. Eighty-three incident ET cases were identified among 3,942 individuals assessed at follow-up. The adjusted annual incidence rate (per 100,000 person-years) in the population aged 65 years and older was 616 (95% CI: 447 to 784). Sixty-four (77.1%) of 83 incident cases had not been diagnosed before our assessment. Conclusions: The incidence of ET may be higher than previously recognized because a large proportion of patients with ET may never seek medical attention.

Original languageEnglish (US)
Pages (from-to)1721-1725
Number of pages5
JournalNeurology
Volume64
Issue number10
DOIs
StatePublished - May 24 2005
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology

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