Country | Population examined | Author | Misuse rate |
USA | 12,237 8th, 10th, and 12th graders (data collection: 2001) | McCabe et al., 2004 [43] | Last year prevalence: 4.0% |
GER | 1035 pupils +512 students; mean age: school children: 19.3, university students: 24 (data collection: 2009/2010) | Franke et al., 2011 [21] | Lifetime prevalence: 1.55% general stimulants, of this number 94% MPH |
SUI | 1139 10th to 12th graders; Canton of Zurich;mean age: 17.1 (data collection: 2014) | Liakoni et al., 2015 [44] | Lifetime prevalence: 4.0% Last-year prevalence: 2.8% |