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Xhaard C, Dumas A, Souchard V, Ren Y, Borson-Chazot F, Sassolas G, Schvartz C, Colonna M, Lacour B, Wonoroff AS, Velten M, Clero E, Maillard S, Marrer E, Bailly L, Mariné Barjoan E, Schlumberger M, Orgiazzi J, Adjadj E, Rubino C, Bouville A, Drozdovitch V, de Vathaire F. Are dietary reports in a case-control study on thyroid cancer biased by risk perception of Chernobyl fallout? Rev Epidemiol Sante Publique 2017; 65:301-308. [PMID: 28579185 DOI: 10.1016/j.respe.2017.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 02/07/2017] [Accepted: 02/13/2017] [Indexed: 10/19/2022] Open
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.
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Affiliation(s)
- C Xhaard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - A Dumas
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - V Souchard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - Y Ren
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - F Borson-Chazot
- Fédération d'endocrinologie, hospices civils de Lyon, groupement hospitalier Lyon-Est, 69677 Bron, France; Rhône-Alpes thyroid cancer registry, cancer research center of Lyon (UMR Inserm 1052, CNRS 5286), RTH Laennec faculty of medicine, university of Lyon, 69008 Lyon, France
| | - G Sassolas
- Rhône-Alpes thyroid cancer registry, cancer research center of Lyon (UMR Inserm 1052, CNRS 5286), RTH Laennec faculty of medicine, university of Lyon, 69008 Lyon, France
| | - C Schvartz
- Thyroid cancer registry of Champagne-Ardennes, institut Jean-Godinot, 51100 Reims, France
| | - M Colonna
- Cancer registry of Isère, 38240 Meylan, France
| | - B Lacour
- French national registry of childhood solid tumours, CHU de Nancy, 54505 Vandœuvre, France; Inserm UMRS1018, CESP, 94800 Villejuif, France
| | - A S Wonoroff
- Cancer registry of doubs, EA 3181, university hospital Besançon, 25030 Besançon, France
| | - M Velten
- Cancer Registry of Bas-Rhin, EA 3430, faculty of medicine, university of Strasbourg, 67085 Strasbourg, France
| | - E Clero
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - S Maillard
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - E Marrer
- Cancer registry of Haut-Rhin, Mulhouse hospital, 68051 Mulhouse, France
| | - L Bailly
- Public health department, university hospital Nice, 06202 Nice, France
| | - E Mariné Barjoan
- Public health department, university hospital Nice, 06202 Nice, France
| | | | - J Orgiazzi
- Department of endocrinology, Hospices civils de Lyon, 69310 Lyon, France
| | - E Adjadj
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - C Rubino
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France
| | - A Bouville
- Radiation epidemiology branch, division of cancer epidemiology and genetics, national cancer institute, Bethesda, USA
| | - V Drozdovitch
- Radiation epidemiology branch, division of cancer epidemiology and genetics, national cancer institute, Bethesda, USA
| | - F de Vathaire
- Centre d'épidémiologie et de santé des populations (Cesp), U1018, epidemiology radiation group, Institut national de la santé et de la recherche médicale (Inserm), 94800 Villejuif, France; Gustave-Roussy, 94800 Villejuif, France; Université Paris-Saclay, 94800 Villejuif, France.
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