Bias can threaten the validity of an epidemiological study. It is important to identify potential sources of bias and implement strategies to minimize them. Common sources of bias include:
Selection Bias: Occurs when the study population is not representative of the target population. Information Bias: Arises from errors in data collection or measurement. Confounding: Occurs when the effect of the exposure is mixed with the effect of another variable.
Strategies to minimize bias include randomization, blinding, and using appropriate statistical methods to control for confounding variables.
