简介：The primary aim of clinical trials is to investigate whether a treatment is effective for a particular disease or condition.Randomized controlled clinical trials are considered to be the gold standard for evaluating the effect of a certain intervention.However,in clinical trials, even after randomization, there are situations where the patients differ substantially with respect to the baseline value of the outcome variable.
简介：The primary aim of clinical trials is to investigate whether a treatment is effective for a particular disease or condition.Randomized controlled clinical trials are considered to be the gold standard for evaluating the effect of a certain intervention.However,in clinical trials, even after randomization, there are situations where the patients differ substantially with respect to the baseline value of the outcome variable.