| Value |
Category |
| 1 |
pas de traitement |
| 2 |
Ébullition |
| 3 |
ajout de chlore |
| 4 |
ajout d'iode |
| 7 |
autre |
| 9 |
|
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.