MRCP UK EXAMINATIONS

Detailed explanation-1: -In an extension study, follow-up analyses of safety and/or effectiveness should consider several elements from the parent clinical trial. The index date, or time when patient follow-up begins, starts at the date of randomization of the patient into the parent study.

Detailed explanation-2: -Phase III clinical trials compare the safety and effectiveness of the new treatment against the current standard treatment. Because doctors do not yet know which treatment is better, study participants are often picked at random (called randomized) to get either the standard treatment or the new treatment.