How can recall bias be minimized in epidemiological studies?
Recall bias occurs when respondents have difficulty remembering past events accurately. To minimize recall bias: - Use specific time frames: Ask about events within a defined period (e.g., "In the past month, have you experienced any respiratory symptoms?") - Provide memory aids: Use calendars or significant events to help respondents recall information. - Pilot testing: Test the questionnaire on a small group to identify and address potential recall issues.
