Table 5. Comparison between the smartphone addicted and non-addicted groups according to the proposed diagnostic criteria for smartphone addiction.

	Addict group (N = 65)	Non-addict group (N = 216)	p-value
Age, year (mean (SD))	20.7 (1.4)	20.9 (1.6)	0.301
Gender, Male/Female	53/12	180/36	0.736
Frequent users	9	45	0.210
Non-frequent users	56	171
Time spent on smartphone of non-frequent users, hours per week (mean (SD))	26.3 (17.3)	21.4 (14.2)	0.035
Duration of owning a smartphone, months (mean (SD))	30.6 (17.7)	27.4 (19.3)	0.224

Frequent users: participants thought that their smartphone use pattern was too frequent to assess the total duration; SD: Standard deviation.