CDC_STAGE field

Containing table:
tblVIS
Explanation of variable:
Clinical CDC stage at time of visit?
Format of data:
character. see coding table for valid codings.

Coding Table

CodeDescription
9Unknown
AA
A1A1
A2A2
A3A3
BB
B1B1
B2B2
B3B3
CC
C1C1
C2C2
C3C3
NN