著者

Hisayoshi Morioka Osamu Itani Yoneatsu Osaki Susumu Higuchi Maki Jike Yoshitaka Kaneita Hideyuki Kanda Sachi Nakagome Takashi Ohida

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.27, no.3, pp.107-111, 2017 (Released:2017-04-03)

参考文献数

39

被引用文献数

46

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Background: This study aimed to clarify the associations between the frequency and amount of alcohol consumption and problematic Internet use, such as Internet addiction and excessive Internet use.Methods: A self-administered questionnaire survey was administered to students enrolled in randomly selected junior and senior high schools throughout Japan, and responses from 100,050 students (51,587 males and 48,463 females) were obtained. Multiple logistic regression analyses were performed in order to examine the associations between alcohol use and problematic Internet, use such as Internet addiction (Young Diagnostic Questionnaire for Internet Addiction ≥5) and excessive Internet use (≥5 h/day).Results: The results of multiple logistic regression analyses indicated that the adjusted odds ratios for Internet addiction (YDQ ≥5) and excessive Internet use (≥5 h/day) became higher as the number of days in which alcohol had been consumed during the previous 30 days increased. In addition, the adjusted odds ratio for excessive Internet use (≥5 h/day) indicated a dose-dependent association with the amount of alcohol consumed per session.Conclusions: This study revealed that adolescents showing problematic Internet use consumed alcohol more frequently and consumed a greater amount of alcohol than those without problematic Internet use. These findings suggest a close association between drinking and problematic Internet use among Japanese adolescents.

著者

Hideki Tsumura Hideyuki Kanda Nagisa Sugaya Satoshi Tsuboi Kenzo Takahashi

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.28, no.4, pp.202-206, 2018-04-05 (Released:2018-04-05)

参考文献数

32

被引用文献数

11 15

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Background: The prevalence of Internet addiction (IA) among employed adults has not been reported using a large sample. To clarify the actual status of addictive Internet use among employed adults, this study aimed to evaluate the prevalence and the risk factors of IA and at-risk IA among employed adults in Japan.Methods: This cross-sectional study surveyed all junior and senior high school personnel in Shimane Prefecture, a rural area in Japan. Eligible participants included 3,211 junior and senior high school personnel (1,259 men and 1,952 women). Participants completed a questionnaire on their activities and factors related to Internet use.Results: The prevalence of IA and at-risk IA was 0.03% and 4.82%, respectively. Furthermore, game playing was shown to be the Internet activity most closely associated with at-risk IA.Conclusions: This study showed that around 5% of school personnel in a rural area in Japan are at risk for developing addiction to the Internet and that using the Internet for game playing is related to at-risk IA. Our results suggest that employed adults should be instructed to use the Internet properly.

著者

Hideki Tsumura Hideyuki Kanda Nagisa Sugaya Satoshi Tsuboi Kenzo Takahashi

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20160185, (Released:2017-11-18)

参考文献数

32

被引用文献数

15

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Background: The prevalence of Internet addiction (IA) among employed adults has not been reported using a large sample. To clarify the actual status of addictive Internet use among employed adults, this study aimed to evaluate the prevalence and the risk factors of IA and at-risk IA among employed adults in Japan.Methods: This cross-sectional study surveyed all junior and senior high school personnel in Shimane Prefecture, a rural area in Japan. Eligible participants included 3,211 junior and senior high school personnel (1,259 men and 1,952 women). Participants completed a questionnaire on their activities and factors related to Internet use.Results: The prevalence of IA and at-risk IA was 0.03% and 4.82%, respectively. Furthermore, game playing was shown to be the Internet activity most closely associated with at-risk IA.Conclusions: This study showed that around 5% of school personnel in a rural area in Japan are at risk for developing addiction to the Internet and that using the Internet for game playing is related to at-risk IA. Our results suggest that employed adults should be instructed to use the Internet properly.

著者

Rina Tanabe Takashi Hisamatsu Mari Fukuda Hideki Tsumura Rina Tsuchie Masako Suzuki Nagisa Sugaya Koshi Nakamura Kenzo Takahashi Hideyuki Kanda

出版者

Japan Society for Occupational Health

雑誌

Journal of Occupational Health (ISSN:13419145)

巻号頁・発行日

vol.63, no.1, pp.e12298, 2021 (Released:2022-01-25)

参考文献数

46

被引用文献数

1

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Objectives: Problematic internet use (PIU) has been suggested in relation to psychological symptoms among schoolteachers, but the relationship with physical symptoms remains unclear. We examined whether PIU or longer Internet usage time is associated with neck pain in schoolteachers.Methods: We conducted a cross-sectional study among 2582 teachers aged 20 years or older (35.6% women) in Shimane and Tottori, Japan in 2018. Neck pain was defined as ≥5 points on the Neck Disability Index. The Compulsive Internet Use Scale (CIUS) was used to assess PIU. Internet usage time on weekdays and weekends was divided into five groups: 0, 1-29, 30-59, 60-119, and ≥120 min/day. Logistic regression analysis was conducted to examine the association of the CIUS score and Internet usage time on weekdays or weekends with neck pain, adjusting for sex, age, position at school, insomnia, and psychological distress.Results: We observed 800 (31.0%) teachers with neck pain. The median (interquartile range) of their CIUS scores was 7 (2, 14). A higher CIUS score was independently associated with a higher prevalence of neck pain (odds ratio of 4th vs. 1st quartiles, 1.41; 95% confidence interval, 1.06-1.87; trend P = .006). Compared with non-Internet users, Internet users on weekdays had almost double the odds of neck pain although the difference did not reach the customary level for designating statistical significance.Conclusions: In conclusion, teachers with higher scores in CIUS were associated with a higher prevalence of neck pain in Japan, suggesting adults with PIU being at risk of physical disorders.

著者

Hideyuki Kanda Peiyu Wang Tomonori Okamura GaoWa Wuyun HePing Wu Xiulan Su Takehito Hayakawa Kenji Amamoto Hirotsugu Ueshima

出版者

Japan Atherosclerosis Society

雑誌

Journal of Atherosclerosis and Thrombosis (ISSN:13403478)

巻号頁・発行日

pp.1012090325-1012090325, (Released:2010-12-10)

参考文献数

25

被引用文献数

1

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Aim: The World Health Organization (WHO) includes insulin resistance among its criteria for diagnosing metabolic syndrome (MetS); however, previous epidemiologic studies have limited their research to settled populations only. This study aims to clarify the relationship between plasma insulin and metabolic factors on a broader scale by studying data obtained from nomadic and settled Mongolian populations.Methods: A cross-sectional epidemiologic study of 200 nomads and 256 farmers was performed in Inner Mongolia, Republic of China. Plasma insulin levels and other metabolic factors, such as blood pressure, serum lipids and obesity, were measured. Participants were classified into 3 categories according to their plasma insulin levels.Results: Cut-off values grouped into tertiles of fasting insulin for all participants were 6.73 nmol/L and 10.33 nmol/L. The mean number of metabolic risk factors, waist circumference, fasting plasma glucose and triglyceride were higher, and the mean HDL cholesterol was lower in the higher fasting insulin tertile among farmers after adjusting for age, gender, smoking, alcohol drinking and total cholesterol. However, no MetS factors were statistically related with fasting insulin tertile levels among nomads.Conclusions: In nomads, hyperinsulinemia may not be an indicator of MetS due to their specific life-style.