A Comparative Study of Mobile Internet Usage between the U.S. and Korea

Number	Questions	US	Korea
Q1	Do you feel that the amount of time spent on the Internet has increased since you got your mobile device?	77.4%	76.8%
Q2	Do you feel the “frequency of internet usage” has increased since you got your mobile device?	81.6%	89.8%
Q3	Have you repeatedly made unsuccessful efforts to control, cut back, or stop using the internet connection with your mobile device?	23.3%	35.4%
Q4	When your mobile device is not working properly to the Internet, do you feel depressed, isolated, or bored?	38.2%	53.2%
Q5	Does your job and/or school work suffer from the amount of time you spend on the Internet with your mobile device?	13.1%	61.1%
Q6	Do others in your life complain about the amount of time you spend on the Internet with your mobile device?	17.3%	36.3%
Q7	Have you ever accessed the Internet with your mobile device during a time you were asked not to (school, work, church, theatre, etc.)?	50.2%	80.6%
Q8	Do you find that you stay connected to the Internet with your mobile device longer than intended?	50.2%	86.9%
Q9	Do you lose sleep due to late night mobile device internet activity at least once a week?	24.4%	64.0%
Q10	Do you watch online videos (YouTube, Netflix, TV Networks) on your mobile device at least once a week?	56.5%	74.5%
Q11	Do you spend free time for playing games on your mobile device at least once a day?	51.9%	60.2%
Q12	Do you prefer communicating through your mobile device over face-to-face communication?	36.0%	12.1%
Q13	At home, do you carry your mobile device into every room with you (even the restroom and bedroom)?	55.5%	79.9%
Q14	Do you often go over your monthly data plan with your mobile device?	20.1%	23.9%
Q15	When you receive a notification alert, do you immediately check your mobile device?	60.1%	72.3%
Q16	Do you purchase a digital product (music, video, book, or app) with your mobile device at least once a month?	32.9%	42.4%
Q17	Do you have any experience using your mobile device as a navigational device instead of asking others for directions?	79.2%	85.4%
Q18	Do you check for real time online information using your Mobile device (Stock prices, sports scores, or online auction) at least once a day?	53.0%	51.6%
Q19	Do you check your online accounts with your mobile device (email, voice mail, or social networking) at least several times a day?	63.6%	80.3%

Table 2

Statics of Mobile Internet Usage Index (MIUI).

	Minimum	Maximum	Mean	St. Dev	80% or Higher
All	0	19	10.33	3.94	8.88%
USA	0	19	8.85	4.19	6.36%
Korea	3	19	11.66	3.17	11.15%

Table 3

Frequency for Usage Pattern and Demographic Data.

Type	Questions	Choices	All	U.S.	Korea
Usage Pattern	Average daily mobile Internet access time	< 10 times	41.2%	45.6%	37.3%
	Average daily mobile Internet access time	< 20 times	27.3%	24.4%	29.9%
	< 30 times	22.6%	22.3%	32.8%
	≥ 30 times	8.9%	18.7%	0.00%
	Average daily mobile Internet usage hours	< 1 hour	25.0%	26.1%	23.9%
< 2 hours	Average daily mobile Internet usage hours	39.5%	36.0%	42.7%
<3 hours	17.8%	20.1%	15.6%
≥ 3 hours	17.8%	17.7%	17.8%
Demographic	Age	< 20 years old	4.5%	8.5%	1.0%
	Age	< 30 years old	59.8%	36.4%	80.9%
	< 40 years old	15.6%	24.0%	8.00%
	≥ 40 years old	20.1%	31.1%	10.2%
	Student	Yes	71.2%	60.1%	81.2%
	No	28.8%	39.9%	18.8%
	Gender	Female	59.6%	53.4%	65.3%
Male	40.4%	46.6%	34.7%
Employment	Unemployed	53.8%	26.5%	78.3%
Employed	46.2%	73.5%	21.7%

Table 4

MIUI Descriptive.

Factor	Category	N	M	S.D.
Country	USA	283	8.845	4.188
Country	Korea	314	11.666	3.157
Age	Young	384	11.117	3.604
Age	Old	213	8.906	4.126
Gender	Female	356	10.671	3.961
Gender	Male	241	9.822	3.862
Student	Non-Student	172	9.227	4.090
Student	Student	425	10.774	3.793
Employment	Unemployed	321	11.243	3.641
Employment	Employed	276	9.264	4.013

Table 5

Result of ANOVA Tests with Combined Data Set (U.S. + Korea).

Hypothesis Number	Factor	Homogeneity of Variance	Mean Difference	F	P-value	Reject Ho	Higher MAI Group
H₁	Country	No	2.821	87.373	< 0.001	Yes	Korea
H₂	Age	Yes	2.211	46.439	< 0.001	Yes	Young
H₃	Gender	Yes	0.849	6.759	0.010	Y/N	None
H₄	Student	Yes	1.547	19.472	< 0.001	Yes	Student
H₅	Employment	Yes	1.979	39.863	< 0.001	Yes	Unemployed

Table 6

Result of ANOVA Tests with Country Data Sets.

Hypothesis Number	Factor	Data Set	Mean Difference	F	P-value	Reject Ho	Higher MIUI Group
H₂	Age	USA	1.824	13.895	< 0.001	Yes	Young
H₂	Age	Korea	0.427	0.855	0.356	No	None
H₃	Gender	USA	0.192	0.702	0.702	No	None
H₃	Gender	Korea	0.823	4.893	0.028	Yes	Female
H₄	Student	USA	1.008	3.974	0.047	Yes	Student
H₄	Student	Korea	0.673	2.189	0.140	No	None
H₅	Employment	USA	0.684	1.469	0.227	No	None
H₅	Employment	Korea	0.718	2.772	0.097	No	None

Table 7

Result from Regression Analysis.

	Unstandardized β_i	Standardized β_i	P-value	VIF
Intercept	6.073		< 0.001
Country	2.741	0.348	< 0.001	1.104
Access Times	0.944	0.161	< 0.001	1.397
Usage Hours	0.775	0.158	< 0.001	1.430
Age	-0.333	-0.073	0.05	1.165
F-stat	61.93		< 0.001