Abstract
Objectives:
There are presently no data available concerning Internet addiction (IA) problems among adolescents in Canada and the province of Quebec. The goal of this study is thus to document and compare the influence of gender on Internet use and addiction.
Method:
The study data were collected from a larger research project on gambling among adolescents. Activities conducted online (applications used and time spent) as well as answers to the Internet Addiction Test (IAT) were collected from 3938 adolescents from grades 9 to 11. The two most often employed cut-off points for the IAT in the literature were documented: (40-69 and 70+) and (50+).
Results:
Boys spent significantly more time on the Internet than did girls. A greater proportion of the girls made intense use of social networks, whereas a greater proportion of the boys made intense use of massively multiplayer online role-playing games, online games, and adult sites. The proportion of adolescents with a potential IA problem varied according to the cut-off employed. When the cut-off was set at 70+, 1.3% of the adolescents were considered to have an IA, while 41.7% were seen to be at risk. At a 50+ cut-off, 18% of the adolescents were considered to have a problem. There was no significant difference between the genders concerning the proportion of adolescents considered to be at risk or presenting IA problems. Finally, analysis of the percentile ranks would seem to show that a cut-off of 50+ better describes the category of young people at risk.
Conclusions:
The results of this study make it possible to document Internet use and IA in a large number of Quebec adolescents.
Keywords: Internet addiction, Internet applications, adolescents, gender
Abstract
Objectifs:
Il n’y a présentement pas de données disponibles au sujet des problèmes de dépendance à Internet (DI) chez les adolescents du Canada et de la province de Québec. Cette étude visait donc à documenter et à comparer l’influence du sexe sur l’utilisation d’Internet et la dépendance à Internet.
Méthod:
Les données de l’étude provenaient d’un vaste projet de recherche sur le jeu de hasard chez les adolescents. Les activités menées en ligne (les applications utilisées et le temps consacré) ainsi que les réponses à un test de dépendance à Internet (IAT) ont été obtenues de 3 938 adolescents, de la 9e à la 11e année. Les 2 seuils d’inclusion les plus souvent employés pour l’IAT dans la littérature ont été documentés (40-69 et 70+) et (50+).
Résultats:
Les garçons passaient significativement plus de temps que les filles sur Internet. Une plus grande proportion des filles faisait un usage intense des réseaux sociaux, tandis qu’une plus grande proportion des garçons faisait un usage intense des jeux de rôle en ligne massivement multijoueur (MMORPG), d’autres jeux en ligne et de sites pour adultes. La proportion des adolescents présentant un problème de DI potentiel variait selon le seuil d’inclusion employé. Quand le seuil d’inclusion était fixé à 70+, 1,3% des adolescents étaient considérés comme ayant une DI, alors que 41,7% étaient jugés à risque. Au seuil d’inclusion de 50+, 18% des adolescents étaient considérés comme ayant un problème. Il n’y avait pas de différences significatives entre les sexes à l’égard de la proportion des adolescents estimés être à risque ou présenter des problèmes de DI. Enfin, l’analyse des rangs-centiles semble indiquer qu’un seuil d’inclusion de 50+ décrit mieux la catégorie des jeunes à risque.
Conclusions:
Les résultats de cette étude documentent l’utilisation d’Internet et la DI chez un grand nombre d’adolescents québécois.
Clinical Implications
With the more severe cut-off point employed, between 1.16% and 1.45% adolescents have an Internet problem. It is therefore important that they have access to treatment.
A significant proportion of adolescents are probably at risk of developing addiction problems. Careful thought must be given to prevention for these young people. This prevention should be addressed specifically according to gender.
The percentile ranks seem to indicate that new cut-off points should be employed to determine at-risk categories. The score of 50 (instead of 40) seemed appropriate in this study.
Limitations
Despite a sizable number of participants, the use of a convenience sample limits the generalization of the results.
The lack of a gold standard to which we could compare the IAT performance is a serious weak point in this field of research.
The rapid development of software applications and the growing use of the Internet raise numerous questions about the repercussions of this technology in the life of adolescents.1,2 While most adolescents make reasonable use of the Internet, some lose control and their use becomes so excessive that it is often qualified as Internet addiction (IA).3,4
There is as of yet no consensus regarding the conceptualization or operationalization of IA.5–10 Despite these debates, several studies have reported IA prevalences oscillating between 0.6% and 26.7%.4,10–18 These sizable variations in the prevalences—depending on the studies, the countries, samples, and the evaluation criteria10,19,20—are of note.
Numerous studies also highlight the differences between genders in terms of both application utilization and the prevalence of IA problems.4,12,14 The prevalence of IA problems would seem to be higher in boys than in girls.4,12,14
There are presently no data available concerning IA problems among adolescents in the province of Quebec.19 These data are of interest considering that the cultural differences associated with young Quebecers may have an impact on Internet use.21,22 Furthermore, numerous health practitioners wonder whether preventive intervention is needed.2,23,24 The goal of the present study is to document Internet use and the proportion of Internet addiction according to gender.
Method
Participants
The study data were collected in 2012 during a research project on gambling among adolescents.25 A convenience sampling method was employed for schools selection. Fourteen public and private secondary schools were approached, and 11 agreed to participate. Participants in grades 9, 10, and 11 were invited to complete the questionnaires individually in their classroom for a duration of 50 minutes.
Instruments
For Internet activities, the time spent on 9 applications was documented: social networks (Facebook, Twitter, etc.), YouTube, chatroom (MSN, Myspace, other than Facebook), blogs or discussion forums, news sites (Cyberpresse, Canoe), massively multiplayer online role-playing games or MMORPGs (World of Warcraft, League of Legends), online games with other players (Call of Duty, Counter Strike), downloading music or films, and visiting adult sites (XXX). For each of the applications and excluding time spent for schoolwork, they had to evaluate how many hours they spent online using a 7-point Likert scale (1 = 0 minutes, 2 = less than an hour, 3 = 5 hours, 4 = 15 hours, 5 = 20 hours, 6 = 30 hours, 7 = 40+ hours). Considering that more than 20 hours of Internet per week is high-intensity use,26 time spent online was put into 2 categories: high intensity (20 hours or more) and low intensity (19 hours or less).
Internet addiction was measured with the French version27 of the Internet Addiction Test (IAT).28 This 20-item questionnaire was evaluated using a 5-point Likert scale and the scores varied from 20 to 100. The IAT scale was shown to have an internal consistency coefficient of 0.93. Although this scale has been employed in many studies,29 different cut-off points have been used to determine which people are at risk or addicted.4,10,27,30 Given the lack of sufficient consensus, we employed the 2 most common ways of categorizing the IAT scores: 1) by using the 3 categories recommended by Young3,13,28 (no risk [20-39], at risk [40-69] or probable Internet addict [70-100]) and 2) by using 2 categories27,31–33 (average users [20-49] or problematic users [50 or more]).
Data Analysis
Pearson’s chi-square test and Fisher’s exact test were used to compare the 2 groups’ means and proportions. Percentile scores of the IAT results were calculated for each gender. Due to the sample size, the significance level at <0.0001 was used to reduce the possibility for type II errors.34
Results
We surveyed a total of 3938 high school students, with a response rate of 98%. Participants were 15.3 years old on average (range, 14-21 years old), of whom 43.7% were boys and 56.3% were girls. Almost all participants (88.8%) spoke French at home, and 87.8% were Canadian. Thirty-one percent of the sample were in grade 9, 36.1% in grade 10, and 32.44% in grade 11.
Intensity of Time Spent on Each Internet Activity
On average, the boys spent significantly more time on the Internet each week (19.65 hours, SD = 17.70) than did the girls (16.68 hours, SD = 15.13) (<0.0001).
Comparing the intensity of the time spent on Internet activities, a greater proportion of the girls made intense use of social networks (P < 0.0001), whereas a greater proportion of the boys made intense use of MMORPGs (P < 0.0001), online games (P < 0.0001), and adult sites (P < 0.0001) (see Table 1).
Table 1.
Applications | Boys, % (n) | Girls, % (n) | P Value |
---|---|---|---|
Social networks (n = 3880) | |||
≤19 hours | 89.91 (1527) | 83.11 (1812) | <0.0001 |
≥20 hours | 10.09 (172) | 16.89 (369) | |
YouTube (n = 3882) | |||
≤19 hours | 92.10 (1562) | 93.85 (2052) | 0.0326 |
≥20 hours | 7.90 (135) | 6.15 (133) | |
Chat (n = 3871) | |||
≤19 hours | 96.88 (1635) | 95.17 (2077) | 0.007 |
≥20 hours | 3.125 (53) | 4.83 (106) | |
Blogs (n = 3871) | |||
≤19 hours | 99.29 (1681) | 98.95 (2155) | 0.25 |
≥20 hours | 0.70 (12) | 1.05 (23) | |
News (n = 3870) | |||
≤19 hours | 99.65 (1684) | 99.86 (2177) | 0.16 |
≥20 hours | 0.35 (6) | 0.14 (3) | |
MMORPGs (n = 3883) | |||
≤19 hours | 90.23 (1529) | 99.41 (2173) | <0.0001 |
≥20 hours | 9.77 (168) | 0.59 (13) | |
Online games (n = 3874) | |||
≤19 hours | 87.30 (1481) | 98.85 (2156) | <0.0001 |
≥20 hours | 12.70 (215) | 1.05 (22) | |
Downloading music or films (n = 3876) | |||
≤19 hours | 97.13 (1648) | 97.90 (2134) | 0.1239 |
≥20 hours | 2.87 (49) | 2.10 (45) | |
Adult sites (n = 3873) | |||
≤19 hours | 97.22 (1635) | 99.77 (2186) | <0.0001 |
≥20 hours | 2.78 (47) | 0.23 (5) |
MMORPG, massively multiplayer online role-playing game.
Internet Addiction Problems
The mean IAT score was 39.43 (SD = 11.30) for the boys and 40.03 (SD = 11.70) for the girls, with no difference between genders (P = 0.1234). There was no significant difference between gender with regard to the proportion who were considered at risk or who had IA problems, no matter which cut-off point was employed (see Table 2).
Table 2.
Cut-Off | Boys | Girls | ||||
---|---|---|---|---|---|---|
% (95% CI) | n | % (95% CI) | n | Total N | P Valuea | |
IAT: 3 categoriesb | ||||||
20 to 40: no risk | 57.78 (55.43-60.09) | 995 | 56.27 (57.19-58.33) | 1243 | 2238 | |
40 to 69: at risk | 41.06 (38.76-43.40) | 707 | 42.28 (40.24-44.35) | 934 | 1641 | |
70 to 100: probable Internet addict | 1.16 (0.75-1.79) | 20 | 1.45 (1.03-2.04) | 32 | 52 | 0.511 |
IAT: 2 categoriesc | ||||||
20 to 49: average user | 81.53 (79.63-83.29) | 1404 | 78.9 (77.15-80.55) | 1743 | 3147 | |
50 to 100: problematic user | 18.47 (16.71-20.37) | 318 | 21.1 (19.45-22.45) | 466 | 784 | 0.040 |
Percentile Ranks
The classification standards employed in IA studies35–37 often set the 95th or 99th percentile as the problem user category, whereas the 75th or 80th percentile is often used to determine the at-risk category. As described in Table 3, the cut-off points corresponding to these percentiles were similar for both genders.
Table 3.
User Category | Percentile | IAT Score (Boys) | IAT Score (Girls) |
---|---|---|---|
At-risk users | 75th to 95th | 46 to 58 | 48 to 60 |
80th to 95th | 48 to 58 | 50 to 60 | |
Problem users | 95th or greater | 59+ | 61 |
99th or greater | 68+ | 69 |
IAT, Internet Addiction Test.
Discussion
To our knowledge, this is the first study to document Internet use and IA problems in a large number of adolescents in Quebec. In comparison with adolescents in other countries, young Quebeckers used the Internet for more hours per week. On average, they spent 17.9 hours compared to weekly averages ranging from 8 to 15 hours elsewhere in the world.38–40 Moreover, the number of weekly hours spent on the Internet has increased since 2007, when a similar study found that adolescents spent 11 hours per week.41 The constant arrival of new applications, notably Facebook, which came online in 2008, might explain this difference.
As expected, the boys spent significantly more time on the Internet and used different applications than did the girls. These results were similar to those observed in other European countries where the boys played online more often (MMORPGs and online games) and went to adult sites more often, while the girls were on social networks more often.17,18,32
Whereas the score of 40 was set as the cut-off point for determining the at-risk group,3,18,30 it was also the average result for the girls (40.03) and close to the average result for the boys (39.43). These results on the IAT scale call into question the cut-off point proposed by Young28 for the category of at-risk adolescents. The percentile ranks would seem to indicate that a cut-off of 50 would probably better delimit the category of adolescents at risk. As for the cut-off of 70 regularly used in studies,3,18,30 it approximately corresponds to the 99th percentile for both genders. It is thus quite likely that it detected the adolescents who were in the greatest difficulty due to their Internet use. A clinical validation of the cut-off points should confirm the relevance of setting the points at 50 or 70.
Contrary to some studies,4,11,12 there was no difference in the proportion of IA among boys and girls. Furthermore, the prevalence in IA problems varies considerably according to the cut-off point employed. When the three categories recommended by Young28 were used, 41.7% of the adolescents were at risk and 1.32% had IA problems. This level of IA prevalence was lower than that observed in most countries,4,11–15,17,20,42–45 but the prevalence of the at-risk category was higher than those generally observed.4,11,12,18 When using the 50+ cut-off point, 19.94% of adolescents were considered problematic, with a prevalence higher than that observed in Italy (5.8%)16 and in China (8.1%-12.2%)18,46,47 but lower than that observed among Italian adolescents (36.7%).48 The variation in the results according to the cut-off point that was employed highlights the inherent difficulties in conceptualizing and comparing IA prevalence in studies.
Despite the large number of participants, this study was based on a convenience sample, which cannot be considered representative of all Quebec adolescents. Other studies with representative samples of the Quebec and Canadian population will have to be conducted to arrive at a more accurate portrait of IA problems.
Regardless of this study’s limitation, these results would seem to indicate that a small proportion of adolescents has an IA problem and should thus have access to treatment. Furthermore, a large number of adolescents would seem to be at risk of developing addiction problems. Longitudinal studies will be necessary to better understand these young people and determine whether they are truly at risk.10,22 These observations raise questions about the prevention that should be provided for these young people. Given that their Internet use is different, gender-specific prevention activities should be developed.
Acknowledgments
We thank the all participants and schools that collaborated in this study and all members of the research team. We also want to thank the Centre de réadaptation en dépendance de Montréal, Institut Universitaire for their financial support for the translation of this paper.
Footnotes
Author Note: This research involves human participants. All participants gave explicit consented to take part in the study and ethics approval for the study was provided by the Comité d'éthique de la recherche de la recherche de l'Université du Québec à Trois-Rivières. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding: The author(s) declared receipt of the following financial support for the research, authorship, and/or publication of this article: This research was financed by the Fonds de recherche Société et Culture du Québec (Grant # 164271).
References
- 1. Guan S-SA, Subrahmanyam K. Youth Internet use: risks and opportunities. Curr Opin Psychiatry. 2009;22(4):351–356. [DOI] [PubMed] [Google Scholar]
- 2. Biron J-F, Dansereau CB. Les préoccupations et les impacts associés à l’utilisation d’Internet dans les milieux des jeunes d’âge scolaire: les relations, le temps et le développement: rapport synthèse. Agence de la santé et des services sociaux de Montréal, Direction de santé publique, Secteurs Tout-petits-Jeunes; 2011. [Google Scholar]
- 3. Bruno A, Scimeca G, Cava L, Pandolfo G, Zoccali RA, Muscatello MR. Prevalence of Internet addiction in a sample of southern Italian high school students. Int J Ment Health Addict. 2014;12(6):708–715. [Google Scholar]
- 4. Ak S, Koruklu N, Yılmaz Y. A study on Turkish adolescent’s Internet use: possible predictors of Internet addiction. Cyberpsychol Behav Soc Netw. 2013;16(3):205–209. [DOI] [PubMed] [Google Scholar]
- 5. Czincz J, Hechanova R. Internet addiction: debating the diagnosis. J Technol Hum Serv. 2009;27(4):257–272. [Google Scholar]
- 6. Desai RA, Krishnan-Sarin S, Cavallo D, Potenza MN. Video-gaming among high school students: health correlates, gender differences, and problematic gaming. Pediatrics. 2010;126(6):e1414–e1424. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 7. Villella C, Martinotti G, Di Nicola M, et al. Behavioural addictions in adolescents and young adults: results from a prevalence study. J Gambl Stud. 2011;27(2):203–214. [DOI] [PubMed] [Google Scholar]
- 8. Weinstein A, Lejoyeux M. Internet addiction or excessive Internet use. Am J Drug Alcohol Abuse. 2010;36(5):277–283. [DOI] [PubMed] [Google Scholar]
- 9. Hinić D. Problems with “Internet addiction” diagnosis and classification. Psychiatr Danub. 2011;23(2):145–151. [PubMed] [Google Scholar]
- 10. Lopez-Fernandez O, Freixa-Blanxart M, Honrubia-Serrano ML. The Problematic Internet Entertainment Use Scale for Adolescents: prevalence of problem Internet use in Spanish high school students. Cyberpsychol Behav Soc Netw. 2013;16(2):108–118. [DOI] [PubMed] [Google Scholar]
- 11. Bakken IJ, Wenzel HG, Götestam KG, Johansson A, Øren A. Internet addiction among Norwegian adults: a stratified probability sample study. Scand J Psychol. 2009;50(2):121–127. [DOI] [PubMed] [Google Scholar]
- 12. Durkee T, Kaess M, Carli V, et al. Prevalence of pathological Internet use among adolescents in Europe: demographic and social factors. Addiction. 2012;107(12):2210–2222. [DOI] [PubMed] [Google Scholar]
- 13. Gencer SL, Koc M. Internet abuse among teenagers and its relations to Internet usage patterns and demographics. Educ Technol Soc. 2012;15(2):25–36. [Google Scholar]
- 14. Ha Y-M, Hwang WJ. Gender differences in Internet addiction associated with psychological health indicators among adolescents using a national web-based survey. Int J Ment Health Addict. 2014;12(5):660–669. [Google Scholar]
- 15. Kaltiala-Heino R, Lintonen T, Rimpelä A. Internet addiction? Potentially problematic use of the Internet in a population of 12-18 year-old adolescents. Addict Res Theory. 2004;12(1):89–96. [Google Scholar]
- 16. Poli R, Agrimi E. Internet addiction disorder: prevalence in an Italian student population. Nord J Psychiatry. 2012;66(1):55–59. [DOI] [PubMed] [Google Scholar]
- 17. Kuss DJ, Griffiths MD, Karila L, Billieux J. Internet addiction: a systematic review of epidemiological research for the last decade. Curr Pharm Des. 2013;1(4):397–413. [DOI] [PubMed] [Google Scholar]
- 18. Lam LT, Peng Z, Mai J, Jing J. Factors associated with Internet addiction among adolescents. CyberPsychol Behav. 2009;12(5):551–555. [DOI] [PubMed] [Google Scholar]
- 19. Dufour M, Nadeau L, Gagnon SR. Tableau clinique des personnes cyberdépendantes demandant des services dans les centres publics de réadaptation en dépendance au Québec: étude exploratoire. Sante Ment Que. Revue Santé mentale au Québec; 2014;39(2):149–168. [PubMed] [Google Scholar]
- 20. Ghassemzadeh L, Shahraray M, Moradi A. Prevalence of Internet addiction and comparison of Internet addicts and non-addicts in Iranian high schools. CyberPsychol Behav. 2008;11(6):731–733. [DOI] [PubMed] [Google Scholar]
- 21. Mackey E. The house of difference: cultural politics and national identity in Canada. Toronto (ON): University of Toronto Press; 2002. [Google Scholar]
- 22. Lopez-Fernandez O. How has Internet addiction research evolved since the advent of Internet gaming disorder? An overview of cyberaddictions from a psychological perspective. Curr Addict Reports. 2015;2(3):263–271. [Google Scholar]
- 23. Kern L. Problematic Internet use: perceptions of addiction counsellors. Comput Educ. 2011;56(4):983–989. [Google Scholar]
- 24. Dufour M, Gendron A, Cousineau MM, Leclerc D. Adolescent technology use: profiles of distinct groups and associated risky behaviors. J Addict Res Ther. 2014;10:2. [Google Scholar]
- 25. Brunelle N, Leclerc D, Cousineau M-M, Dufour M, Gendron A, Martin I. Internet gambling, substance use, and delinquent behavior: an adolescent deviant behavior involvement pattern. Psychol Addict Behav. 2012;26(2):364. [DOI] [PubMed] [Google Scholar]
- 26. CEFRIO. Netendances 2011: le commerce électronique et les services bancaires en ligne. Publ Cefrio. 2011;2(6):1–18. [Google Scholar]
- 27. Khazaal Y, Billieux J, Thorens G, et al. French validation of the Internet addiction test. CyberPsychol Behav. 2008;11(6):703–706. [DOI] [PubMed] [Google Scholar]
- 28. Young KS. Internet addiction: the emergence of a new clinical disorder. CyberPsychol Behav. 1998;1(3):237–244. [Google Scholar]
- 29. Lortie CL, Guitton MJ. Internet addiction assessment tools: dimensional structure and methodological status. Addiction. 2013;108(7):1207–1216. [DOI] [PubMed] [Google Scholar]
- 30. Watters CA, Keefer KV, Kloosterman PH, Summerfeldt LJ, Parker JDA. Examining the structure of the Internet Addiction Test in adolescents: a bifactor approach. Comput Hum Behav. 2013;29(6):2294–2302. [Google Scholar]
- 31. Berner JE, Santander J, Contreras AM, Gómez T. Description of Internet addiction among Chilean medical students: a cross-sectional study. Acad Psychiatry. 2014;38(1):11–14. [DOI] [PubMed] [Google Scholar]
- 32. Yen J-Y, Yen C-F, Chen C-S, Tang T-C, Ko C-H. The association between adult ADHD symptoms and Internet addiction among college students: the gender difference. CyberPsychol Behav. 2009;12(2):187–191. [DOI] [PubMed] [Google Scholar]
- 33. Liberatore KA, Rosario K, Martí LNC-D, Martínez KG. Prevalence of Internet addiction in Latino adolescents with psychiatric diagnosis. Cyberpsychol Behav Soc Netw. 2011;14(6):399–402. [DOI] [PubMed] [Google Scholar]
- 34. Skipper JK, Guenther AL, Nass G. The sacredness of. 05: a note concerning the uses of statistical levels of significance in social science. Am Sociol. 1967;2(1):16–18. [Google Scholar]
- 35. Ko C-H, Yen J-Y, Chen C-C, Chen S-H, Yen C-F. Proposed diagnostic criteria of Internet addiction for adolescents. J Nerv Ment Dis. 2005;193(11):728–733. [DOI] [PubMed] [Google Scholar]
- 36. Chow SL, Leung GM, Ng C, Yu E. A screen for identifying maladaptive Internet use. Int J Ment Health Addict. 2009;7(2):324–332. [Google Scholar]
- 37. Jenaro C, Flores N, Gómez-Vela M, González-Gil F, Caballo C. Problematic Internet and cell-phone use: psychological, behavioral, and health correlates. Addict Res Theory. 2007;15(3):309–320. [Google Scholar]
- 38. Adiele I, Olatokun W. Prevalence and determinants of Internet addiction among adolescents. Comput Hum Behav. 2014;31:100–110. [Google Scholar]
- 39. de Ayala López MCL, Gutierrez JCS, Jiménez AG. Problematic Internet use among Spanish adolescents: the predictive role of Internet preference and family relationships. Eur J Commun. 2015;30(4):470–485. [Google Scholar]
- 40. Holstein BE, Pedersen TP, Bendtsen P, et al. Perceived problems with computer gaming and Internet use among adolescents: measurement tool for non-clinical survey studies. BMC Public Health. 2014;14(1):361. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 41. Dufour M, Brunelle N, Gendron A, Leclerc D, Cousineau M-M. L’utilisation d’Internet chez les jeunes adolescents au secondaire. Écho-Toxico. 2013;23(1):11–13. [Google Scholar]
- 42. Choi K, Son H, Park M, et al. Internet overuse and excessive daytime sleepiness in adolescents. Psychiatry Clin Neurosci. 2009;63(4):455–462. [DOI] [PubMed] [Google Scholar]
- 43. Jang KS, Hwang SY, Choi JY. Internet addiction and psychiatric symptoms among Korean adolescents. J Sch Health. 2008;78(3):165–171. [DOI] [PubMed] [Google Scholar]
- 44. Park SK, Kim JY, Cho CB. Prevalence of Internet addiction and correlations with family factors among South Korean adolescents. Adolescence. 2008;43(172):895. [PubMed] [Google Scholar]
- 45. Hawi NS. Internet addiction among adolescents in Lebanon. Comput Hum Behav. 2012;28(3):1044–1053. [Google Scholar]
- 46. Wang H, Zhou X, Lu C, Wu J, Deng X, Hong L. Problematic Internet use in high school students in Guangdong province, China. PLoS One. 2011;6(5):e19660. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 47. Cao H, Sun Y, Wan Y, Hao J, Tao F. Problematic Internet use in Chinese adolescents and its relation to psychosomatic symptoms and life satisfaction. BMC Public Health. 2011;11(1):802. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 48. Milani L, Osualdella D, Di Blasio P. Quality of interpersonal relationships and problematic Internet use in adolescence. CyberPsychol Behav. 2009;12(6):681–684. [DOI] [PubMed] [Google Scholar]