Bayesian prediction of lung and breast cancer mortality among women in Spain (2014-2020).
Breast cancer (BC) is the main cause of cancer mortality among women, and mortality from lung cancer (LC) is increasing among women. The purpose of the present study was to project the mortality rates of both cancers and predict when LC mortality will exceed BC mortality.



The cancer mortality data and female population distribution were obtained from the Spanish National Statistics Institute. Crude rate (CR), age-standardized rate (ASR), and age-specific rate were calculated for the period 1980-2013 and projected for the period 2014-2020 using a Bayesian log-linear Poisson model.



All calculated rates were greater for BC than for LC in 2013 (CR, 27.3 versus 17.3; ASR, 13.5 versus 9.3), and the CR was not projected to change by 2020 (29.2 versus 27.6). The ASR for LC is expected to surpass that of BC in 2019 (12.9 versus 12.7).



By 2020 the LC mortality rates may exceed those of BC for ages 55-74 years, possibly because of the prevalence of smoking among women, and the screening for and more effective treatment of BC. BC screening could be a good opportunity to help smokers quit by offering counseling and behavioral intervention.
Biostatistics Unit, Department of Basic Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
Juan Carlos
JC
Martín-Sánchez
Plan for Oncology of the Catalan Government, L'Hospitalet de Llobregat, Spain; Department of Clinical Sciences, School of Medicine, Universitat de Barcelona, Barcelona, Spain.
Ramon
R
Clèries
Biostatistics Unit, Department of Basic Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
Cristina
C
Lidón
Centre Atenció Primària Les Corts. Transverse Group for Research in Primary Care, IDIBAPS, Barcelona, Spain; Public Health Unit, Department of Medicine, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
Luís
L
González-de Paz
EPIUnit - Instituto de Saúde Pública da Universidade do Porto (ISPUP), Porto, Portugal; Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal.
Nuno
N
Lunet
Biostatistics Unit, Department of Basic Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain; Tobacco Control Unit, Cancer Prevention and Control Programme, Catalan Institute of Oncology-ICO, L'Hospitalet de Llobregat, Spain; Cancer Control and Prevention Group, Bellvitge Biomedical Research Institute-IDIBELL, L'Hospitalet de Llobregat, Spain. Electronic address: jmmartinez@uic.es.
Jose M
JM
Martínez-Sánchez
D000328:Adult; D000368:Aged; D001499:Bayes Theorem; D001943:Breast Neoplasms / Q000453:epidemiology* / Q000401:mortality; D005260:Female; D049674:History, 21st Century; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000401:mortality; D008875:Middle Aged; D013030:Spain / Q000453:epidemiology
Bayesian models; Breast cancer; Lung cancer; Projections & predictions