The source of information from which the cause of death was established.
National Codes:
| 1 | Death certificate | 
| 2 | NHS Central Register Follow-up | 
| 3 | Hospital records | 
| 4 | Verbal communication | 
| 5 | Post mortem | 
References:
National Cancer Dataset Version 1.3_ISB October 2002
This attribute is also known by these names:
| Context | Alias | 
|---|---|
| plural | DEATH CAUSE IDENTIFICATION METHODS |