Notes:
This is derived from the e-Government Interoperability Framework (e-GIF) Data Elements DATE and TIME.

This is the PERSON PROPERTY EFFECTIVE DATE and PERSON PROPERTY EFFECTIVE TIME from PERSON PROPERTY where the PERSON PROPERTY CLASSIFICATION is 'Acute Myocardial Infarction History Item' and where the AMI HISTORY ITEM TYPE is 'Symptom Onset'.

The time to within 10 minutes, if possible, when symptoms began.

Where there is a prodrome of intermittent pain the time recorded should be the time of onset of those symptoms which led the patient to call for help. Where admission followed an out of hospital cardiac arrest, with no better information available, use the time of the arrest for onset of symptoms.

Central Cardiac Audit Database (CCAD) item name:
Date/time of symptom onset

This data element is also known by these names:

Context	Alias
plural	SYMPTOM ONSET DATES AND TIMES (AMI)