difference between observational study and clinical trial
In clinical trails, the researcher would divide the participants into two more groups and control the way they behave, while noting the changes or results. Observational studies and clinical trials are two different methods that researchers use to collect data and test theories. When conducting research, it is important for a researcher to be able to gather data by examining various subjects and being able to job down the outcome. Observational studies and clinical trials are different from each other in terms of interference of the researcher. In Observational studies, the researcher does not interfere, while in clinical trails the researcher creates two groups with controlled experimentation.