| Value | Category | 
|---|---|
| 1 | Tea/drink with sugar only | 
| 2 | Milkk 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 with milk | 
| 8 | Porridge without sugar only | 
| 9 | Nothing | 
| 10 | Others | 
| Sysmiss |