00 | Not allocated |
01 | Blank - no change |
02 | Don't know - no change |
03 | Refused - no change |
10 | Value to value |
11 | Blank to value |
12 | Don't know to value |
13 | Refused to value |
20 | Value to longitudinal value |
21 | Blank to longitudinal value |
22 | Don't know to longitudinal value |
23 | Refused to longitudinal value |
30 | Value to allocated value long |
31 | Blank to allocated value long |
32 | Don't know to allocated value long |
33 | Refused to allocated value long |
40 | Value to allocated value |
41 | Blank to allocated value |
42 | Don't know to allocated value |
43 | Refused to allocated value |
50 | Value to blank |
52 | Don't know to blank |
53 | Refused to blank |