Cecelia Cheng and Angel Yee-lam Li chose 80 global studies, covering reports of web addiction across 31 nations in seven regions. This included the US, Australia, Austria, Estonia, France, Germany, Ireland, Norway, Sweden, United Kingdom, Bulgaria, Cyprus, Czech Republic, Greece, Hungary, Italy, Poland, Romania, Serbia, Slovenia, Spain, Iran, Isarel, Lebanon, Turkey, China, Hong Kong, India, South Korea, Taiwan, and Columbia.