Publication bias refers to the systematic difference between published and unpublished studies, affecting the likelihood of formal publication support. It can be measured by comparing published and unpublished studies. Researchers can identify and include unpublished outcomes and studies to avoid bias, such as searching prospective trial registers, informal sources, and regulatory body websites. However, adding unpublished studies may not completely eliminate bias. Visit us @ https://pubrica.com/insights/study-guide/publication-bias-in-clinical-research/