Date of Start of Reaction / Event
| Element Number | E.I.4 |
| Element Name | Date of Start of Reaction / Event |
| English Name | Date of Start of Reaction / Event (Date of Start of Reaction / Event) |
| Data Type | Date/Time |
| Max Length | N/A |
| Required | No |
| Allowed Values | See Appendix II for further information. nullFlavor: MSK, ASKU, NASK |
MSKMasked - 마스킹됨ASKUAsked but Unknown - 질문했으나 알 수 없음NASKNot Asked - 질문하지 않음This data element is used to enter the date of onset of the adverse reaction/event. When several terms are reported, such as a diagnosis accompanied by signs and symptoms, and the reporter has not indicated a clear onset date for each adverse reaction/event, this data element should contain the date the first symptom appeared.
MFDS-O-CUMFDS-O-CTMFDS-O-CFMFDS-T-CUMFDS-T-CTMFDS-T-CF