Are dietary reports in a case-control study on thyroid cancer biased by risk perception of Chernobyl fallout?
Rev Epidemiol Sante Publique
; 65(4): 301-308, 2017 Aug.
Article
en En
| MEDLINE
| ID: mdl-28579185
ABSTRACT
BACKGROUND:
In retrospective case-control studies performed following nuclear tests or nuclear accidents, individual thyroid radiation dose reconstructions are based on fallout and meteorological data from the residential area, demographic characteristics, and lifestyle as well as dietary information. Collecting the latter is a controversial step, as dietary declarations may be affected by the subjects' beliefs about their risk behavior. This report analyses the potential for such bias in a case-control study performed in eastern France.METHODS:
The study included 765 cases of differentiated thyroid carcinoma matched with 831 controls. Risk perceptions and beliefs of cases and controls were compared using Chi2 tests and differences in dietary reports were analyzed using a two-way ANOVA.RESULTS:
In general, atmospheric pollution and living near a nuclear power plant were the two major risks that may influence thyroid cancer occurrence cited by cases and controls. When focusing in particular on the consequences of the Chernobyl accident, cases were more likely to think that the consequences were responsible for thyroid cancer occurrence than controls. Vegetable consumption during the two months after the Chernobyl accident was correlated with the status of subjects, but not to their beliefs. Conversely, consumption of fresh dairy products was not correlated with the status or beliefs of subjects.CONCLUSION:
We found no evidence of systematic bias in dietary reports according to the status or beliefs held by subjects about the link between thyroid cancer occurrence and Chernobyl fallout. As such, these dietary reports may be used in further studies involving individual dosimetric reconstructions.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Percepción
/
Ceniza Radiactiva
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Neoplasias de la Tiroides
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Contaminación Radiactiva de Alimentos
/
Registros de Dieta
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Accidente Nuclear de Chernóbil
/
Conducta Alimentaria
Tipo de estudio:
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adolescent
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Adult
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Child
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Female
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Humans
/
Male
País/Región como asunto:
Europa
Idioma:
En
Revista:
Rev Epidemiol Sante Publique
Año:
2017
Tipo del documento:
Article
País de afiliación:
Francia