Related Experiment Video
Updated: Sep 25, 2026

Impact Assessment of Repeated Exposure of Organotypic 3D Bronchial and Nasal Tissue Culture Models to Whole Cigarette Smoke
Published on: February 12, 2015
Changes and determinants in cigarette smoking prevalence in southwestern France, 1985-1997
Pedro Marques-Vidal1, Jean-Bernard Ruidavets, Jean-Pierre Cambou
1INSERM U558, Faculté de Médecine Purpan, Toulouse, France.
Objective And Methods:
Smoking trends were assessed in southwestern France for the period 1985-1997 using data from the MONICA population surveys conducted in the Toulouse region.
Results:
Smoking prevalence decreased in men and remained stable in women, with the exception of age group 35-44 years (stabilization in men, increase in women). In both genders, prevalence of ex-smokers increased. Higher educational level was negatively associated with smoking in men and positively associated in women; in both genders, older age was negatively associated with smoking.
Conclusions:
In southwestern France, the decrease or stabilization in smoking prevalence is due to an increase in ex-smokers rather than in never smokers.
Related Concept Videos
Statistical Methods for Analyzing Epidemiological Data
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One example of...
Prevalence and Incidence
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...
Lifestyle Factors and Health
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Criteria for Causality: Bradford Hill Criteria - II
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
