| Value | Category |
|---|---|
| 1 | Tea/ drink with sugar only |
| 2 | Milk/ milk tea with sugar, etc |
| 3 | Tea/ drink with solid food |
| 4 | Tea/ drink without sugar with solid food |
| 5 | Porridge with solid food |
| 6 | Porridge with sugar only |
| 7 | Porridge without sugar only |
| 8 | Nothing |
| 9 | Not applicable |
| 10 | Others |
| Sysmiss |