Publication related to RSI or an RSI staff member
Investigation of bias related to differences between case and control interview dates in five INTERPHONE countries.
Authors
- Turner, Michelle C, Turner MC, Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada. Electronic address: michelle.turner@isglobal.org.
- Sadetzki, Siegal, Sadetzki S, The Cancer & Radiation Epidemiology Unit, The Gertner Institute, Chaim Sheba Medical Center, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
- Langer, Chelsea E, Langer CE, Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
- Villegas PhD, Rodrigo, Villegas PhD R, Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
- Figuerola, Jordi, Figuerola J, Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
- Armstrong, Bruce K, Armstrong BK, Sydney School of Public Health, The University of Sydney, Sydney, Australia.
- Chetrit, Angela, Chetrit A, The Cancer & Radiation Epidemiology Unit, The Gertner Institute, Chaim Sheba Medical Center, Israel.
- Giles, Graham G, Giles GG, Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia.
- Krewski, Daniel, Krewski D, McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada; Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada.
- Hours, Martine, Hours M, Unité Mixte de Recherche Epidémiologique Transport Travail Environnement Université Lyon 1/IFSTTAR, Université de Lyon, Lyon, France.
- McBride, Mary L, McBride ML, Cancer Control Research, British Columbia Cancer Agency, Vancouver, Canada.
- Parent, Marie-Elise, Parent ME, INRS-Institut Armand-Frappier, Université du Québec, Laval, Canada.
- Richardson, Lesley, Richardson L, University of Montreal Hospital Research Centre, Montreal, Canada.
- Siemiatycki, Jack, Siemiatycki J, University of Montreal Hospital Research Centre, Montreal, Canada.
- Woodward, Alistair, Woodward A, School of Population Health, University of Auckland, Auckland, New Zealand.
- Cardis, Elisabeth, Cardis E, Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.
PURPOSE: Associations between cellular telephone use and glioma risk have been examined in several epidemiological studies including the 13-country INTERPHONE study. Although results showed no positive association between cellular telephone use and glioma risk overall, no increased risk for long-term users, and no exposure-response relationship, there was an elevated risk for those in the highest decile of cumulative call time. However, results may be biased as data were collected during a period of rapidly increasing cellular telephone use, and as controls were usually interviewed later in time than cases. METHODS: Further analyses were conducted in a subset of five INTERPHONE study countries (Australia, Canada, France, Israel, New Zealand) using a post hoc matching strategy to optimize proximity of case-to-control interview dates and age. RESULTS: Although results were generally similar to the original INTERPHONE study, there was some attenuation of the reduced odds ratios and stronger positive associations among long-term users and those in the highest categories for cumulative call time and number of calls (eighth-ninth and 10th decile). CONCLUSIONS: Proximity and symmetry in timing of case-to-control interviews should be optimized when exposure patterns are changing rapidly with time.
