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Doctoral Thesis
DOI
https://doi.org/10.11606/T.6.2018.tde-09012018-124610
Document
Author
Full name
Leonor Castro Monteiro Loffredo
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1990
Supervisor
Committee
Souza, Jose Maria Pacheco de (President)
Castilho, Euclides Ayres de
Freitas, Jose Alberto de Souza
Ruffino Netto, Antonio
Soboll, Maria Lucia de Moura Silva
Title in Portuguese
Fissuras lábio-palatais: estudo caso-controle de fatores de risco
Keywords in Portuguese
Fatores de Risco
Fissuras Lábio-palatais
Abstract in Portuguese
As fissuras orais integram dois grupos segundo origens etiológicas distintas, quais sejam, fissuras labiais ou lábio-palatais e fissuras palatais. Realizou-se um estudo tipo caso-controle, com 450 casos e 450 controles, sendo que, entre os casos, 354 eram portadores de fissura labial ou lábio-palatina e 96 de fissura palatina. A fim de se estudar a associação entre fissuras orais e possíveis fatores de risco, foram objeto de análise as variáveis: local de moradia da mãe nos quatro primeiros meses de gestação (urbana/rural), poluição, aplicação de pesticida e herbicida na lavoura, doenças nos pais, doenças na mãe nos quatro primeiros meses de gestação, ingestão medicamentosa nesse período, hereditariedade, tabagismo, consumo de bebida alcoólica e exposição a raio-X durante a gestação ou um ano antes. Foram estimados os riscos relativos , segundo cada variável, por ponto e por intervalo de 95 por cento de confiança. Empregou-se análise multivariada, adotando-se o procedimento de máxima verossimilhança incondicional, para cada tipo de fissura. As variáveis hereditariedade (RR = 4,96), epilepsia na mãe (RR = 2,39) e ingestão de anti-inflamatório (RR = 2,59) são fatores de risco para fissuras labiais ou lábio-palatais. As variáveis hereditariedade (RR = 2,82) e poluição (RR = 2,58) são fatores de risco para fissuras palatinas.
Title in English
Oral clefts: a case-control study of risk factors
Keywords in English
Oral Clefts
Risk Factors
Abstract in English
There are two groups of clefts which differ in their etiology, namely the group with cleft lip with or without cleft palate and the group of cleft palate isolated. This study refers to a case-central analysis, with 450 cases and 450 controls. Among the cases, 354 have cleft lip with or without cleft palate and 96 have cleft palate. In order to study the association between oral clefts and possible risk factors, the analised variables were: place of mother's residence (urban/rural); pollution, parents's diseases, mother's diseases during the first four months of pregnancy, intake of drugs related to this period, heredity, smoking habits, alcohol consumption and X-ray examinations during pregnancy or X-ray examinations prior to pregnancy. It was estimated the relative risks CRR), for each variable by point and by 95 per cent of confidente interval. It was applied multivariate analysis, for unconditional maximum likelihood procedure, according to each type of cleft. Related to cleft lip with or without cleft palate, the risk factors are heredity (CRR = 4,96), epilepsy in the mother (RR = 2,39) and drug intake as anti-inflammatory in the first four months of pregnancy (RR = 2,59). Related to cleft palate, the risk factors are heredity (RR = 2,82) and pollution (RR = 2,58).
 
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Publishing Date
2018-01-09
 
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