| Value | Category |
|---|---|
| 1 | 1-Unaware of the process |
| 2 | 2-Cost, distance or difficulty of reaching the registration center |
| 3 | 3-Do not trust data will be kept confidential |
| 4 | 4-See no benefit in registration |
| 5 | 5-Waiting for registration |
| 6 | 6-Not eligible (LR and PRS) |
| 7 | 7-Other (specify) |
| Sysmiss |