| Code | Display | Definition |
| draft | Draft | The study is undergoing design but the process of selecting study subjects and capturing data has not yet begun. |
| in-progress | In-progress | The study is currently being executed |
| suspended | Suspended | Execution of the study has been temporarily paused |
| stopped | Stopped | The study was terminated prior to the final determination of results |
| completed | Completed | The information sought by the study has been gathered and compiled and no further work is being performed |
| entered-in-error | Entered in error | This study never actually existed. The record is retained for tracking purposes in the event decisions may have been made based on this erroneous information. |