Background: Findings and limitations of previous studies on persistent organic pollutants (POPs) and pancreatic cancer risk support conducting further research in prospective cohorts.
Methods: We conducted a prospective case-control study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Participants were 513 pancreatic cancer cases and 1020 matched controls.
Background: The use of biomarkers of environmental exposure to explore new risk factors for pancreatic cancer presents clinical, logistic, and methodological challenges that are also relevant in research on other complex diseases.
Objectives: First, to summarize the main design features of a prospective case-control study -nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort- on plasma concentrations of persistent organic pollutants (POPs) and pancreatic cancer risk. And second, to assess the main methodological challenges posed by associations among characteristics and habits of study participants, fasting status, time from blood draw to cancer diagnosis, disease progression bias, basis of cancer diagnosis, and plasma concentrations of lipids and POPs.
There is scant information on nicotine dependence in smokers not seeking cessation treatment. This study analyses the relationship between nicotine dependence, measured by the Fagerström Test for Nicotine Dependence (FTND), and salivary cotinine concentration in a sample of smokers from the general population. We conducted a cross-sectional study (2004-2005) of a representative sample of the general population of Barcelona, Spain (n=1245).
View Article and Find Full Text PDFIntroduction: The time to first cigarette smoked after waking up appears to be a good predictor of plasma and urine cotinine levels; however, collection of blood and urine is difficult in population-based studies and may influence participation. We aimed to test whether time to first cigarette is associated with salivary cotinine.
Methods: We used data from a cross-sectional study on a representative sample of the general population of Barcelona, Spain.
Objective: We assessed whether the salivary cotinine content of daily smokers varied with the readiness to quit and smoking characteristics.
Methods: This cross-sectional study was conducted in Barcelona, Spain (n=1245) in 2004-2005. We administered a questionnaire to assess smoking behaviour and collected saliva to determine the cotinine content.
Background: Characterizing and comparing the determinant of cotinine concentrations in different populations should facilitate a better understanding of smoking patterns and addiction. This study describes and characterizes determinants of salivary cotinine concentration in a sample of Spanish adult daily smoker men and women.
Methods: A cross-sectional study was carried out between March 2004 and December 2005 in a representative sample of 1245 people from the general population of Barcelona, Spain.
Objectives: To estimate the prevalence of self-reported exposure to secondhand smoke (SHS) in different settings and to describe salivary cotinine concentration and its determinants among non-smokers.
Methods: Cross-sectional study of a representative sample (N=775) of adult non-smokers in Barcelona, Spain (years 2004-2005). We assessed exposure to SHS using a questionnaire and measurement of salivary cotinine concentration.
Incidence rates of oral and oropharyngeal cancers (oral cancer) in Spain are among the highest in Europe. Spain has a population heavily exposed to various types of tobacco and alcoholic beverages but the role and impact of tobacco type and beverage type in oral carcinogenesis remain controversial. To estimate the independent and joint effects of tobacco smoking and alcohol drinking habits on the risk of developing oral cancer, we carried out a multicenter, hospital-based, case-control study in Spain.
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