Table 4.

Results on internet addiction prevalence summary

Study	Assessment of internet addiction	Main findings on internet addiction prevalence during the COVID-19 pandemic
Dong et al., [15] 2020	Y-IAT score:	2.68% (male, 3.50%; female, 1.81%)=AIU;
	≥70=AIU	33.37% (male, 35.10%; female, 31.52%)=PIU;
	40–69=PIU	Age, gender, and education status were significantly different among AIU, PIU, and NIU (p<0.001)
	≥39=NIU
Lin, [16] 2020	CIAS score:	24.4% (130 male and 125 female)=IA
	≥64=IA	Age and all psychosocial risk factors were significantly different in the non-IA and IA groups (p<0.01)
	<63=non-IA
Mulyadi et al., [18] 2020	Duration of internet usage per day:	55.6% (551 respondents)=IA
	≥6 hrs=IA	Average internet usage duration per day=6.96 hrs
	<6 hrs=non-IA

COVID-19, coronavirus disease-2019; Y-IAT, Young’s Internet Addiction Test; AIU, addictive internet users; PIU, problematic internet users; NIU, normal internet users; CIAS, Chen Internet Addiction Scale; IA, internet addiction