| No problems | Occasional problems | Problematic use |
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CERI | 1917 (41.4 %) | 2084 (45.0 %) | 632 (13.6 %) |
CERM | 3977 (80.9 %) | 822 (16.7 %) | 119 (2.4 %) |
CERV | 2908 (66.9 %) | 1167 (26.9 %) | 269 (6.2 %) |
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ICT information and communication technologies, CERI questionnaire of experiences related to the internet, CERM questionnaire of experiences related to mobile phones, CERV questionnaire of experiences related to video games