| Value | Category | 
|---|---|
| -2 | na | 
| -1 | missing | 
| 1 | fever | 
| 2 | headache | 
| 3 | pain | 
| 4 | stomach disorder | 
| 5 | abnormal growth | 
| 6 | toothache or related problems | 
| 7 | upper respiratory tract disorder | 
| 8 | sleeping disorder | 
| 9 | anxiety depression | 
| 10 | fatigue, general tiredness | 
| 11 | muscular/joint pain | 
| 12 | other | 
| Sysmiss |