6. Types of Descriptive Studies
1. Types of Descriptive Studies
1.1. Case Reports and Case Series
These are descriptive studies of one (case study or case report) or a series of patients (case series) defined by eligibility criteria, and where the unfolding course of events (disease progression, therapies, outcomes, etc.) is described in detail and where interventions are not manipulated. This study design is used to provide a detailed description of an uncommon disease or condition, a specific situation, or unique therapeutic approaches. Reports provide retrospective safety and efficacy details, as well as other clinical parameters (e.g., quality of life [QoL]) derived from cases of interest in their natural clinical setting.