Research studies are systematic investigations designed to answer specific questions or test hypotheses. They often involve collecting data through various methods, such as surveys, experiments, or observations. The goal is to gain insights and contribute to knowledge in fields like medicine, psychology, or social sciences. These studies can be categorized into different types, including qualitative and quantitative research. Qualitative studies focus on understanding experiences and perspectives, while quantitative studies emphasize numerical data and statistical analysis. Both types play a crucial role in advancing our understanding of complex issues and informing decision-making in various domains.