ikäryhmäkohortit
Ikäryhmäkohortit, or age-group cohorts, refer to groups of individuals who share a common characteristic, most notably their age or a similar age range, and are followed over time to observe developmental trends or the impact of specific events. This epidemiological and sociological research method allows for the study of how aging, historical events, or societal changes affect different generations.
In demographic studies, age cohorts are crucial for understanding population dynamics, such as birth rates, mortality
The key feature of cohort studies is their longitudinal nature. Data is collected from the same group