Table 2. Number of substances used (n = 105).
| Number of substances used | n | Percentage |
|---|---|---|
| 1 | 9 | 8.6 |
| 2 | 25 | 23.8 |
| 3 | 29 | 27.6 |
| 4 | 24 | 22.9 |
| 5 | 13 | 12.4 |
| 6 | 4 | 3.8 |
| 7 | 1 | 1.0 |
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