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Population-based case-control study of essential tremor

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Abstract

Current epidemiologic data on the association between environmental factors and essential tremor (ET) are scanty. In a population-based case-control study we investigated the relationship between some putative risk factors and ET. In the present study, we included all subjects identified during a door-to-door prevalence survey in a Sicilian community, affected by ET, and alive on 1 November 1987 (n=31). Of the 31 prevalent cases of ET, we were able to contact 28 subjects. Twenty-eight controls were randomly selected from the general population and matched to each case for age and sex. Exposure variables were investigated by interviewing the patients and their controls or close relatives, using a structured questionnaire. The odds for habitual alcohol consumption were 0.3, indicating a protective effect. The odds for exposure to agricultural chemicals and domestic animals were 2.5 and 2.7, respectively, suggesting a role as potential risk factors. However, the associations found by us were not statistically significant.

Sommario

Un argomento poco considerato dalle indagini di epidemiologia analitica riguarda la possibile influenza di fattori di rischio ambientali sull'eziologia del tremore essenziale. Scopo del presente lavoro è quello di verificare l'esistenza di un'associazione tra possibile fattori di rischio e il tremore essenziale, attraverso uno studio caso controllo su popolazione. In un precedente studio di prevalenza di tipo porta a porta, abbiamo identificato tutti i pazienti affetti da tremore essenziale residenti net comune di Terrasini net giorno di prevalenza, 1 Novembre 1987 (n=31). A 28 di tale pazienti e a un gruppo di controloi di uguale numerosità, selezionati dalla popolazione generate e appaiati per età e sesso net rapporto di 1:1, è stato possibile somministrare un questionario strutturato, per valutare l'esposizione a diverse variabili ambientali. Il rischio per it consumo abituale di alcool è risultato di 0,3, suggerendo un effetto protettivo per tale assunzione; al contrario l'esposizione ad anticrittogamici e il contatto abituale con animali domestici hanno mostrato rispettivamente un rischio di 2,5 e 2,7, valori questi the candiderebbero tali esposizioni come fattori the aumentano il rischio di sviluppare it tremore essenziale. Nessuna di tale associazioni è comunque risultata statisticamente significativa.

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Authors and Affiliations

  1. Institute of Neuropsychiatry Faculty of Medicine, University of Palermo, Via Gaetano La Loggia 1, I-90129, Palermo, Italy

    G. Salemi, P. Aridon, G. Calagna, M. Monte & G. Savettieri

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  1. G. Salemi
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  2. P. Aridon
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  3. G. Calagna
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  4. M. Monte
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  5. G. Savettieri
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Salemi, G., Aridon, P., Calagna, G. et al. Population-based case-control study of essential tremor. Ital J Neuro Sci 19, 301–305 (1998). https://doi.org/10.1007/BF00713856

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  • DOI: https://doi.org/10.1007/BF00713856

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