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Poster-discussion: Lung Cancer
Lung cancer risk among hairdressers in SYNERGY – pooled analysis from case-control studies in Europe and Canada
  1. Ann Olsson1,
  2. Neela Guha1,
  3. Thomas Brüning2,
  4. Beate Pesch2,
  5. Benjamin Kendzia2,
  6. Heinz-Erich Wichmann3,
  7. Irene Brüske3,
  8. Isabelle Stücker4,
  9. Angela Cecilia Pesatori5,
  10. Maria Teresa Landi6,
  11. Neil Caporaso6,
  12. Jack Siemiatycki7,
  13. Per Gustavsson8,
  14. Nils Plato8,
  15. Franco Merletti9,
  16. Dario Mirabelli9,
  17. Lorenzo Richiardi9,
  18. Wolfgang Ahrens10,
  19. Hermann Pohlabeln10,
  20. Karl-Heinz Jöckel11,
  21. David Zaridze12,
  22. Adrian Cassidy13,
  23. Jolanta Lissowska14,
  24. Neonila Szeszenia-Dabrowska15,
  25. Simone Benhamou16,
  26. Miriam Schejbalova17,
  27. Lenka Foretova18,
  28. Vladimir Janout19,
  29. Peter Rudnai20,
  30. Eleonora Fabianova21,
  31. Rodica Stanescu Dumitru22,
  32. Francesco Forastiere23,
  33. Bas Bueno-de-Mesquita1,
  34. Veronique Benhaim-Luzon1,
  35. Susan Peters25,
  36. Roel Vermeulen25,
  37. Paolo Boffetta26,
  38. Hans Kromhout25,
  39. Kurt Straif1
  1. 1ARC, Lyon, France
  2. 2IPA, Bochum, Germany
  3. 3Institut für Epidemiologie, Neuherberg, Germany
  4. 4INSERM U 754 - IFR69, Villejuif, France
  5. 5Universita degli Studi di Milano, Milan, Italy
  6. 6NCI, Bethesda, USA
  7. 7University of Montreal Hospital Centre, University of Montreal, Montreal, Canada
  8. 8Karolinska Institutet, Stockholm, Sweden
  9. 9University of Turin, Turin, Italy
  10. 10Bremen Institute for Prevention Research and Social Medicine, Bremen, Germany
  11. 11Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
  12. 12Russian Cancer Research Centre, Moscow, Russia
  13. 13University of Liverpool, Liverpool, UK
  14. 14Cancer Center and Institute of Oncology, Warsaw, Poland
  15. 15Nofer Institute, Lodz, Poland
  16. 16INSERM U 946, Paris, France
  17. 17Charles University, Prague, Czech Republic
  18. 18Masaryk Memorial Cancer Institute, Brno, Czech Republic
  19. 19Palacky University, Olomouc, Czech Republic
  20. 20National Institute of Environment Health, Budapest, Hungary
  21. 21Regional Authority of Public Health, Banska Bystrica, Slovakia
  22. 22Institute of Public Health, Bucharest, Romania
  23. 23Department of Epidemiology. ASL RomaE, Rome, Italy
  24. 24NIVM, Bilthoven, The Netherlands
  25. 25Utrecht University, Utrecht, The Netherlands
  26. 26Mount Sinai School of Medicine, New York, USA

Abstract

Objectives Most cohort studies show an increased risk of lung cancer among hairdressers. We investigated the risk of lung cancer among hairdressers and barbers in a large pooled dataset, while controlling for smoking.

Methods The SYNERGY project has pooled information on lifetime work histories (ISCO-68) and tobacco smoking from 16258 lung cancer cases and 19922 controls, including 20% women, from 12 case-control studies in European and Canada. ORs for lung cancer and 95% CIs were estimated by unconditional logistic regression, adjusted for age, sex, study, cigarette pack-years and time since quitting smoking.

Results Less than 1% of the study population had ever worked as hairdresser or barber (145 cases, 140 controls). Hairdressers and barbers experienced a slight increase in lung cancer risk (OR 1.23; 95% CI 0.97 to 1.56), which disappeared after adjusting for smoking (OR 0.95; 95% CI 0.72 to 1.25). Results by duration of employment showed highest risks in hairdressers with short employment. Results were similar by gender and histology of lung cancer. We observed a slight and non-significant increase in risk for male barbers, particularly in barbers with the longest employment and after adjustment for smoking (OR 1.62; 95% CI 0.81 to 3.24).

Conclusions We did not detect an increased risk of lung cancer overall among those who ever worked as hairdresser or barber. However, among male barbers we observed that risk increased with duration of employment, although not statistically significant.

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