There are various methods to collect exposure data, each with its pros and cons:
Questionnaires and Surveys: These are commonly used to obtain self-reported data on lifestyle factors and medical history. Direct Measurement: Utilizing instruments to measure exposure levels, such as air quality monitors or dosimeters. Biomonitoring: The analysis of biological samples to detect the presence and concentration of chemicals or other agents in the body. Geographic Information Systems (GIS): GIS technology can map and analyze spatial data, allowing researchers to study the impact of environmental exposures across different locations.