Various types of epidemiological studies have been employed to investigate the link between smoking and lung cancer:
Cohort studies: These studies follow groups of individuals over time to observe the development of lung cancer among smokers and non-smokers. Case-control studies: These studies compare individuals with lung cancer (cases) to those without (controls) to understand the role of smoking. Cross-sectional studies: These studies analyze data from a population at a single point in time to assess the prevalence of smoking and lung cancer.
