Prevalence of essential tremor in urban Lagos, Nigeria: a door-to-door community-based study.
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Date
2012-09-27
Authors
Okubadejo, N.U.
Bankole, I.A.
Ojo, O.O.
Ojini, F.I.
Danesi, M.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Biomed Central (BMC)
Abstract
BACKGROUND:
Essential tremor (ET) is one of the commonest movement disorders though the prevalence varies globally. There is paucity of data on ET prevalence in sub-Saharan Africa. The study aimed to determine the prevalence of ET in a Nigerian community.
METHODS:
This door-to-door survey was conducted in two stages. In Stage 1, 3000 randomly selected residents of an urban centre in Lagos, Nigeria, were screened using a questionnaire to detect symptoms of movement disorder. 234 participants who responded positively regarding presence of tremors were rescreened using an ET-specific questionnaire, a face-to-face interview and neurological examination. Diagnosis of ET was based on the Movement Disorders Society (MDS) consensus diagnostic criteria for ET.
RESULTS:
Of the 3000 participants, forty responded positively to the ET screening questionnaire, of which 36 (19 females and 17 males) had a final diagnosis of ET, giving a crude prevalence of 12 per 1000 (95% CI = 8.1- 15.9). Gender specific prevalence was 10.3 /1000 in males and 14.3/1000 in females. Age specific prevalence increased with advancing age in both sexes. Age adjusted prevalence (WHO New world population) was 23.8 per 1000.
CONCLUSIONS:
We documented a high prevalence of ET in this study, with typical increasing prevalence with advancing age as previously reported in other populations.
Description
Keywords
Essential tremor , Prevalence , Nigeria , Community based study , Epidemiology
Citation
Okubadejo NU, Bankole IA, Ojo OO, Ojini FI, Danesi MA. Prevalence of essential tremor in urban Lagos, Nigeria: a door-to-door community-based study. BMC Neurol. 2012 Sep 27;12:110.