Prevalence estimates on different types of internet addiction

Types of Internet addiction	Area	Sample/population	Prevalence rate	Reference
Internet gaming disorder	Europe	12,938 adolescents (aged 14-17 years)	1.6%	[99]
	China	1,718 adolescents	2.0%	[14]
	Australia	1,287 adolescents	1.8%	[100]
Smartphone addiction	Switzerland	1,519 students	16.9%	[101]
	India	1,304 adolescents	39.0-44.0%	[102]
	USA	3,425 university students	20.1%	[103]
Social networking site addiction	Hungary	5,961 adolescents aged 15-22 years	4.5%	[104]
	Singapore	1,110 college students	29.5%	[105]
Online shopping addiction	South Korea	598 online shoppers aged 20-69 years	12.5%	[106]
	Germany/Switzerland	122 treatment-seeking patients with buying-shopping disorder aged 20-68 years	33.6%	[107]
Cybersex addiction	South Africa	539 adult outpatients with current obsessive-compulsive disorder	3.3% (current), 5.6% (lifetime)	[108]
Problematic online gambling	International	975 gamblers aged 17-80 years	14.0%	[109]