| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 1109 | 
                                    
                                    86%
                                 | 
| 2 | 7 years old or younger | 31 | 
                                    
                                    2.4%
                                 | 
| 3 | 8 or 9 years old | 27 | 
                                    
                                    2.1%
                                 | 
| 4 | 10 or 11 years old | 43 | 
                                    
                                    3.3%
                                 | 
| 5 | 12 or 13 years old | 56 | 
                                    
                                    4.3%
                                 | 
| 6 | 14 or 15 years old | 21 | 
                                    
                                    1.6%
                                 | 
| 7 | 16 years old or older | 2 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 68 |