Study events are unplanned events in the form of symptoms, signs, disease, laboratory, or physiological observations that must be recorded for all study subjects.
During a clinical study, all undesired and unplanned events must be recorded. These events may not necessarily have a causal relationship to the treatment/intervention being studied, and will generally be identified by the investigators as “related” or “not related” if there is reasonable evidence to support either claim.
Examples of study events include: constipation, hard or soft stools, abnormal crying, acute or chronic diarrhea.