Bricklayers may be exposed to several lung carcinogens, including crystalline silica and asbestos. Previous studies that analyzed lung cancer risk among these workers had several study design limitations. We examined lung cancer risk among bricklayers within SYNERGY, a large international pooled analysis of case-control studies on lung cancer and the joint effects of occupational carcinogens. For men ever employed as bricklayers we estimated odds ratios (OR) and 95% confidence intervals (CI) adjusted for study center, age, lifetime smoking history and employment in occupations with exposures to known or suspected lung carcinogens. Among 15,608 cases and 18,531 controls, there were 695 cases and 469 controls who had ever worked as bricklayers (OR: 1.47; 95% CI: 1.28-1.68). In studies using population controls the OR was 1.55 (95% CI: 1.32- 1.81, 540/349 cases/controls), while it was 1.24 (95% CI: 0.93-1.64, 155/120 cases/controls) in hospital-based studies. There was a clear positive trend with length of employment (p < 0.001). The relative risk was higher for squamous (OR: 1.68, 95% CI: 1.42-1.98, 309 cases) and small cell carcinomas (OR: 1.78, 95% CI: 1.44-2.20, 140 cases), than for adenocarcinoma (OR: 1.17, 95% CI: 0.95-1.43, 150 cases) (p-homogeneity: 0.0007). ORs were still elevated after additional adjustment for education and in analyses using blue collar workers as referents. This study provided robust evidence of increased lung cancer risk in bricklayers. Although non-causal explanations cannot be completely ruled out, the association is plausible in view of the potential for exposure to several carcinogens, notably crystalline silica and to a lesser extent asbestos. © 2014 The Authors. Published by Wiley Periodicals, Inc. on behalf of UICC.
Lung cancer risk among bricklayers in a pooled analysis of case-control studies / Consonni, D. and De Matteis, S. and Pesatori, A.C. and Bertazzi, P.A. and Olsson, A.C. and Kromhout, H. and Peters, S. and Vermeulen, R.C.H. and Pesch, B. and Brüning, T. and Kendzia, B. and Behrens, T. and Stücker, I. and Guida, F. and Wichmann, H.-E. and Brüske, I. and Landi, M.T. and Caporaso, N.E. and Gustavsson, P. and Plato, N. and Tse, L.A. and Yu, I.T.-S. and Jöckel, K.-H. and Ahrens, W. and Pohlabeln, H. and Merletti, F. and Richiardi, L. and Simonato, L. and Forastiere, F. and Siemiatycki, J. and Parent, M.-É. and Tardón, A. and Boffetta, P. and Zaridze, D. and Chen, Y. and Field, J.K. and Mannetje, A. and Pearce, N. and McLaughlin, J. and Demers, P. and Lissowska, J. and Szeszenia-Dabrowska, N. and Bencko, V. and Foretova, L. and Janout, V. and Rudnai, P. and Fabiánová, E. and Dumitru, R.S. and Bueno-De-Mesquita, H.B. and Schüz, J. and Straif, K.. - In: INTERNATIONAL JOURNAL OF CANCER. - ISSN 0020-7136. - ELETTRONICO. - 136:(2015), pp. 360-371. [10.1002/ijc.28986]
Lung cancer risk among bricklayers in a pooled analysis of case-control studies
Boffetta, P.;
2015
Abstract
Bricklayers may be exposed to several lung carcinogens, including crystalline silica and asbestos. Previous studies that analyzed lung cancer risk among these workers had several study design limitations. We examined lung cancer risk among bricklayers within SYNERGY, a large international pooled analysis of case-control studies on lung cancer and the joint effects of occupational carcinogens. For men ever employed as bricklayers we estimated odds ratios (OR) and 95% confidence intervals (CI) adjusted for study center, age, lifetime smoking history and employment in occupations with exposures to known or suspected lung carcinogens. Among 15,608 cases and 18,531 controls, there were 695 cases and 469 controls who had ever worked as bricklayers (OR: 1.47; 95% CI: 1.28-1.68). In studies using population controls the OR was 1.55 (95% CI: 1.32- 1.81, 540/349 cases/controls), while it was 1.24 (95% CI: 0.93-1.64, 155/120 cases/controls) in hospital-based studies. There was a clear positive trend with length of employment (p < 0.001). The relative risk was higher for squamous (OR: 1.68, 95% CI: 1.42-1.98, 309 cases) and small cell carcinomas (OR: 1.78, 95% CI: 1.44-2.20, 140 cases), than for adenocarcinoma (OR: 1.17, 95% CI: 0.95-1.43, 150 cases) (p-homogeneity: 0.0007). ORs were still elevated after additional adjustment for education and in analyses using blue collar workers as referents. This study provided robust evidence of increased lung cancer risk in bricklayers. Although non-causal explanations cannot be completely ruled out, the association is plausible in view of the potential for exposure to several carcinogens, notably crystalline silica and to a lesser extent asbestos. © 2014 The Authors. Published by Wiley Periodicals, Inc. on behalf of UICC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
