The use of psychoactive substances and adolescents’ school performance
Table 2:
| Use habits | No | Yes | UMW | p |
| School performance | Average order | Average order | ||
| Learning Environment | 194,26 | 89,95 | 1519,000 | 0,000 |
| Planning of studies | 192,59 | 121,32 | 2115,000 | 0,005 |
| Methods of studying | 194,01 | 94,68 | 1609,000 | 0,000 |
| Reading Skills | 193,36 | 106,82 | 1839,500 | 0,001 |
| Study Motivation | 193,47 | 104,74 | 1800,000 | 0,001 |
| Global School Performance | 193,81 | 98,46 | 1800,000 | 0,000 |