| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 513 |
66.7%
|
| 2 | Brother only | 171 |
22.2%
|
| 3 | Sister only | 27 |
3.5%
|
| 4 | Both | 10 |
1.3%
|
| 5 | Don't know | 48 |
6.2%
|