• Environmental Analysis Health and Toxicology
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• v.28
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• pp.18.1-18.8
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• 2013

Objectives As public concern on possible harmful effects of mobile phone in children has been raised, information of epidemiological characteristics of mobile phone use in children and adolescents will be essential for public health policy. Methods Using three databases (n=21,693) collected from 2008 to 2011, we examined characteristics of mobile phone ownership and use, and socioeconomic positions (SEP) in Korean children and adolescents. Results The ownership rate and the amount of mobile phone use were higher in females than males, in higher school grades than lower grades, and at 2011 than 2008. The average age of first mobile phone ownership was shown to decrease from 12.5 years in currently high school students to 8.4 years in currently elementary school students at 2011. More than 90% of children in the 5th grade owned a mobile phone. More children owned a mobile phone in lower SEP communities than in higher SEP. Children with parents educated less than those with parents educated more were more likely to own and use mobile phone. Conclusions Considering the epidemiological characteristics of mobile phone use, precautionary measures to prevent unnecessary exposure to mobile phones are needed in children and adolescents.

• The Journal of Information Technology
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• v.8 no.1
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• pp.11-25
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• 2005

The purposes of this study were to explain consumer attitude, expenses and satisfaction of mobile-phone Users. The data of this study used from Pollever.com. This study was satisfaction of mobile-phone users in Korea. The users were consumers of Samsung, LG, SK-Telecom and Pantack. The critical success factor was on the subside for mobile-phone in the growth of mobile service, which we can analyze in its positive effects. Fifty percent of consumers were unsatisfaction with local companies without Samsung. Now most of local mobile-companies will developed music-phone, high-tec camera-phone, hi-slim phone, and health-phone. But, the results of this study are as fallow: Most of consumer' main issues were design, weight, and brand power. It was in that it played the driving force to upgrade the local mobile-phone services into international level with the explosive growth in business by providing cheap phones.

• Research in Community and Public Health Nursing
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• v.21 no.4
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• pp.512-521
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• 2010

Purpose: The remarkable progress in information and communication technology has had a great effect on the healthcare delivery system. The development of smart phone applications is a new field. The aim of our research was to provide assistance in developing smart phone applications for community health nursing. Methods: Based on an informative approach, this study developed persona and site maps, followed by a storyboard as a way of analyzing users' requirements and designing responses in the context of smart phone application development methodology. Results: We developed persona, user interface and database design successfully, and then seven nurses selected four nursing problems (income, residence, pain, and digestion hydration). The search time in seconds for the 2005 English OMAHA guidelines to find three nursing interventions for these problems was used to evaluate the effectiveness of the smart phone application. The results showed that smart phone applications' search was 21 times faster on the average than book guidelines. Conclusion: An English version of the OMAHA system application was developed for the Android smart phone market. It is hoped that smart phone applications such as this will be used internationally for nursing education.

• Journal of Korean Academy of Nursing
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• v.33 no.2
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• pp.220-227
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• 2003

Purpose: The purpose of this research was to determine the effect of an exercise program on the health status and depression in the elderly. Method: The research design was a nonequivalent control group pre-post test design. The exercise program (experimental group) consisted of 22 elderly over a period exercising for 12weeks, 3 days/week. The phone counselling about exercise and health(control group) was applied for 12 weeks for 10-15minutes/day/week. To identify the health status SF-36 was utilized and the GDS was used for depressionanalysis. The data was collected from May 2001 to July 2001. Result: The effect of the exercise appeared significant in the subarea of health status (physical function, physical role, mental health, general health) and depression. The effect of the phone counselling was appeared significant in subarea of health status - bodily pain. The effect of the exercise and the phone counselling did not appear significant. Conclusion: The exercise designed for the elderly promotes health in the elderly and further evaluation about the effect on exercise and phone counselling is needed.

• Child Health Nursing Research
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• v.16 no.3
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• pp.203-210
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• 2010

Purpose: This study was done to identify cell phone addiction in high school students and variables predicting this addiction. Methods: The participants were 469 adolescents from four high schools. Data were collected through self-report questionnaires, and analyzed using the SPSS program. Results: Of the high school students, 88.4% reported being average users, 7.5%, heavy users, and 4.1%, cell phone addicted. Cell phone addiction was significantly correlated with immediate self-control, self-efficacy, depression, and peer support. Predictors of cell phone addiction were the following: receiving text message on weekends, immediate self-control, main use (text message), minute per call on weekdays, listening to music, gender (female), monthly call charges, depression, person called (friends), and self-efficacy. These factors explained 39% of variance in cell phone addiction. Conclusion: The above findings indicate that cell phone addiction in high school students was influenced by gender, cell phone use, and psychological factors. Therefore the approach to effective cell phone addiction management for high school students is to consider these variables when developing programs for these students.

• Korean Parent-Child Health Journal
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• v.15 no.2
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• pp.60-70
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• 2012

Purpose: This study was done to examine factors influencing cell phone addiction for middle school students by gender. Methods: The participants were 228 male students and 228 female students in two middle schools. Data were collected through self-report questionnaires, and analyzed using the SPSS/WIN 19.0 program. Results: Cell phone addictions of female students are higher than those of male students. Factors influencing cell phone addiction for male students were mimicry, sending text message on weekdays, immediate self-control, grade, syntony, and monthly call charge, explaining 42.2% of variance in cell phone addiction. Factors influencing cell phone addiction for female students were internet addiction, sending and receiving text message on weekends, immediate self-control, long-term self-control, use time, main use, syntony, and monthly call charge, explaining 46.8% of variance in cell phone addiction. Conclusion: The results indicated that cell phone addiction and its influencing factors differed by gender. Therefore the approach to effective cell phone addiction management program for middle school students should consider gender differences.

• Environmental Analysis Health and Toxicology
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• v.31
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• pp.22.1-22.7
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• 2016

Objectives This study analyzed the associations between mobile phone call frequency and duration with non-specific symptoms. Methods This study was conducted with a population group including 532 non-patient adults established by the Korean Genome and Epidemiology Study. The pattern of phone call using a mobile phone was investigated through face-to-face interview. Structured methods applied to quantitatively assess health effects are Headache Impact Test-6 (HIT-6), Psychosocial Well-being Index-Short Form, Beck Depression Inventory, Korean-Instrumental Activities of Daily Living, Perceived Stress Scale (PSS), Pittsburgh Sleep Quality Index, and 12-item Short Form Health Survey where a higher score represents a higher greater health effect. Results The average daily phone call frequency showed a significant correlation with the PSS score in female subjects. Increases in the average duration of one phone call were significantly correlated with increases in the severity of headaches in both sexes. The mean (standard deviation) HIT-6 score in the subgroup of subjects whose average duration of one phone call was five minutes or longer was 45.98 (8.15), as compared with 42.48 (7.20) in those whose average duration of one phone call was <5 minutes. The severity of headaches was divided into three levels according to the HIT-6 score (little or no impact/moderate impact/substantial or severe impact), and a logistic regression analysis was performed to investigate the association between an increased phone call duration and the headache severity. When the average duration of one phone call was five minutes or longer, the odds ratio (ORs) and the 95% confidence intervals (CIs) for the moderate impact group were 2.22 and 1.18 to 4.19, respectively. The OR and 95% CI for the substantial or severe impact group were 4.44 and 2.11 to 8.90, respectively. Conclusions Mobile phone call duration was not significantly associated with stress, sleep, cognitive function, or depression, but was associated with the severity of headaches.

• The Journal of Korean Society for School & Community Health Education
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• v.16 no.3
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• pp.17-29
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• 2015

Objectives: The purpose of this study is to examine the trend of adolescent's smart phone addiction researches from 2012 to 2014 in Korea, and to propose further study for prevention of adolescent's smart phone addiction. Methods: Subjects were 169 researches about adolescent's smart phone addiction from 2012 to 2014 in Korea, and the theme was summarized as following: variables associated with adolescent's smart phone addiction, prevention and intervention strategies of it, the status and development of adolescent's smart phone addiction scale, awareness and prevention of smart phone addiction. Results: As a result of this study, 63.3% were as the most source of researches in 2014, and master's thesis was 74.6 percent. According to the theme of research, the most effects on smart phone addition is self-control and parenting and the most relational variables with smart phone addition are anxiety and parenting. The most affected by smart phone addiction is adaption of school life and conversational breakdown. The studies about prevention of smart phone addiction and intervention examine the effect of therapy program and group consultation. Conclusions: The educational program for using smart phone should be made and applied for preventing adolescent's smart phone addiction.

• Child Health Nursing Research
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• v.16 no.4
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• pp.304-313
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• 2010

Purpose: This study was done to develop an educational needs scale for the prevention of cell phone addiction and to investigate the educational needs for prevention of cell phone addiction in Korean adolescents. Methods: The participants were 609 adolescents in one middle school and two high schools. Data were collected through self-report questionnaires, and analyzed using the SPSS program. Results: Twenty items regarding the educational needs for prevention of cell phone addiction were selected for the final scale, and categorized into 3 factors (diagnosis and management, properties, and definition and actual condition) which explained 61.09% of the total variance. The educational needs for the prevention of cell phone addiction in adolescents were moderate, with items related to diagnosis and management ranked as most important. The educational needs for prevention of cell phone addiction varied by gender, grade, academic achievement, perception of health status, satisfaction with school, and text messaging participants. Conclusion: The findings indicate that educational needs for diagnosis and management of cell phone addiction ranked as most important in adolescents. Therefore, programs related to the prevention and management of cell phone addiction based on the educational needs of adolescents should be provided.

• The Korean Journal of Health Service Management
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• v.11 no.2
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• pp.117-127
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• 2017

Objectives : This study aimed to identify factors of adolescents' cell-phone dependency using Agnew's General Strain Theory (GST) and the perspective of adolescents' micro-systems. A second aim was to verify the moderating effect of self-esteem. Methods : In total, 2,046 students who participated in a study on KCTPS mid. 1 panel 3 Wave by the National Youth Policy Institute were examined in this research. Data were analyzed through descriptive statistics, factor analysis, reliability tests, and hierarchical linear regression using SPSS Ver. 22.0. Results : The strain factors had a positive effect on adolescents' depression, and depression had a positive effect on cell-phone dependency. In addition, self-esteem had a negative moderating effect between depression and cell-phone dependency. Conclusions : Factors of cell-phone dependency were identified. The findings of the study indicate that an intervention is required to lower strain and depression and to enhance self-esteem among adolescents.