An omnibus study is a comprehensive research project that covers a wide range of topics or issues within a specific field or discipline. It involves collecting data from multiple sources and analyzing it to gain a deeper understanding of a particular subject. This type of study is often used to gather information on various aspects of a complex problem or to explore multiple hypotheses at once. It provides a holistic view of a topic and allows for a more thorough analysis of the data. Omnibus studies are commonly used in social sciences, market research, and public opinion polling. They are a valuable tool for gaining insights into complex issues and informing decision-making processes.