查看文章

2. Methods

The following search terms were entered in PubMed on November 4, 2016:“internet addiction”“game addiction”“gaming addiction”“pathological gaming”“internet gaming disorder” AND “prevalence.” There was no restriction on time period of the study. The inclusion criteria were: i) original study using empirically collected data; ii) paper written in English; iii) inclusion of a measure of gaming addiction or internet addiction with a subset of gaming addiction; iv) full-text availability; v) at least 200 subjects were studied; vi) a natural (eg non-clinical, recruited from a school or the general public) population was studied; vii) prevalence of problem gaming was reported as a percentage.