VAERS comes with official documentation, the VAERS Data User Guide.
The PDF can be downloaded from here.
The document covers various a number of subjects such as:
Table descriptions, Field definitions, Codes, Abbreviations, and Acronyms.
It is a very useful document. Please download and familiarize yourself with it.
Field Definitions:
ie:
Age in Years (AGE_YRS):
The recorded vaccine recipient’s age, in years, from Box 4 of the VAERS form
Died (DIED):
If the vaccine recipient died, a “Y” is placed in Box 8a1. Otherwise the field will be blank
Life Threatening (L_THREAT):
If the vaccine recipient had a life threatening event associated with the vaccination, a “Y” is placed in Box 8b. Otherwise the field will be blank
Codes, Abbreviations, Acronyms:
ie.
FLU4: INFLUENZA VIRUS VACCINE, QUADRIVALENT
IM: Intramuscular
ANAM: acute motor axonal neuropathy
CHF: congestive heart failure
Dx: diagnosis
IPV: injection
More Links:
The official VAERS website can be found here.
VAERS Factsheet here.