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[Occupational noise exposure and hypertension].

Authors: Santana, Vilma S.; Barberino, João Luiz;

[Occupational noise exposure and hypertension].

Abstract

The hypothesis that occupational noise exposure is positively associated with hypertension was examined in a crosssectional study carried out on a group of patients who were enrolled at the Occupational Health Unit of the Unified Health System, situated in Salvador city, the capital of Bahia state, Brazil. Data were obtained from 276 medical records, corresponding to all patients newly registered during the first six months of 1992. Data on noise exposure come from both reported occupational exposure history and clinical diagnosis of occupational noise-induced hearing loss. Hypertension diagnosis complies with World Health Organization criteria, as well as with the history of antihypertensive treatment. Stratified analysis and unconditional logistic regression modeling show results that do not support the study hypothesis: there are no differences between systolic or diastolic blood pressure or between proportion of hepertension for exposed and non exposed groups. However, statiscally significant (alpha = 0.05) increment of the effect measured was reported among workers who reported low educational level (below elementary). This could be another evidence of socially related inequalities underlying exposure distribution among workers at the workplace, which should be addressed, at greater depth, in future studies.

A hipótese de que a exposição ao ruído ocupacional estava positivamente associada à hipertensão arterial foi avaliada em um estudo transversal, realizado com um grupo de 276 pacientes, admitidos em um ambulatório de saúde do trabalhador do Sistema Único de Saúde, atendidos nos primeiros seis meses de 1992. A exposição ao ruído teve duas medidas: história referida de exposição ocupacional ao ruído e o diagnóstico de disacusia ocupacional. A hipertensão arterial foi definida de acordo com os critérios da OMS, incluindo-se também a referência a tratamento anti-hipertensivo. Dados obtidos através da análise estratificada e da modelagem logística não-condicional revelam que a hipótese não foi confirmada: não se encontrou diferenças entre a pressão sistólica ou diastólica ou entre as proporções de hipertensão entre indivíduos expostos ou não expostos. Todavia, verificou-se aumento estatisticamente significante (alfa=0,05) da medida de efeito quando o nível de educação era baixo (até o primeiro grau completo), o que parece indicar maior intensidade ou duração da exposição entre os trabalhadores desse grupo. Isto pode ser outra evidência da desigualdade social subjacente à distribuição da exposição entre trabalhadores no ambiente de trabalho, o que deverá ser focalizado, com mais profundidade, em estudos futuros.

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Keywords

Adult, Male, Hypertension^i2^sepidemiol, Cohort Studies, Sex Factors, Noise^i2^soccupatio, Confidence Intervals, Odds Ratio, Humans, Industry, Hearing loss^i2^sepidemiol, Perda auditiva provocada por ruído^i1^sepidemiolo, Hipertensão^i1^sepidemiolo, Data Collection, Ruído ocupacional^i1^sefeito adve, Middle Aged, Blood Pressure Monitors, Logistic Models, Hypertension, Multivariate Analysis, Noise, Occupational, Educational Status, Female, Hearing loss^i2^snoise indu, Brazil

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
11
Average
Top 10%
Average
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gold