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

Code Description
9 Unknown
A A
A1 A1
A2 A2
A3 A3
B B
B1 B1
B2 B2
B3 B3
C C
C1 C1
C2 C2
C3 C3
N N