| Value | Category | Cases | |
|---|---|---|---|
| 1 | born with it | 4941 |
9.3%
|
| 2 | illness | 24083 |
45.1%
|
| 3 | accident | 4023 |
7.5%
|
| 4 | age related reasons | 14312 |
26.8%
|
| 5 | as a result of violence | 306 |
0.6%
|
| 6 | other | 1687 |
3.2%
|
| 8 | don't know | 4006 |
7.5%
|
| Sysmiss | 109101 |