Abstract
Objective: To analyze and review systematically the situation of clinical trials on common mental disorders available in the ClinicalTrials.gov database. Methods: Ecological study developed in the public and free database Clincaltrials.gov, which defines the situation of Clinical Trials in Not yet Recruting; Recruting; Enrolling by invitation; Active, not recruiting; Terminated; Completed; Completed with results; Suspended; Withdraw or Unknown. The site was accessed using the descriptors: "Anxiety" and "Depression". No projects were excluded from the study. This search has been done in 2019. Results: Of the studies, 47.76% were financed by industries, 41.55% by the National Institutes of Health (NIH) and 10.69% by the US Federal Agency. It is noticed that only 18.4% of the total clinical trials generated results. In addition, as for the study population 32.72% are children, 91.27% are adults, and 57.05% are elderly. Final Considerations: It becomes increasingly important to think about biases, not only for clinical trials in Mental Health, but for all other studies that may be carried out, valuing ethics in publishing positive and negative results in all observed circumstances.