Methodology of clinical research

In randomized clinical trials, patients are randomly assigned to treatment and control groups. Some of these trials are also double blinded. Neither the doctors nor the patients then know which group the patient has been assigned to.

However, if the study drug causes unmistakable symptoms, blinding is difficult.

Randomization becomes ethically difficult when physicians or patients have preferences for a study drug.

Therefore, other study designs are often used in complementary medicine. These include non-randomized comparative studies, longitudinal studies, case series, individual case reports and qualitative studies. All studies are conducted in accordance with national and international guidelines.Einzelfallberichte und qualitative Studien. den Qualitätsrichtlinien durch.