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Binge drinking and associated factors among school students: a cross-sectional study in Zhejiang Province, China.

ABSTRACT: OBJECTIVE:To investigate the prevalence and correlating factors of binge drinking among middle and high school students in Zhejiang Province, China. METHODS:We performed a cross-sectional study using data from a school-based survey. A total of 23 543 (response rate=97.5%) eligible adolescents from 442 different schools (including middle schools, academic high schools and vocational high schools) were asked to fill in an anonymous self-administered behaviour questionnaire between April and May 2017. Multivariable logistic regression models were used to examine the associations of sociodemographic and behavioural factors with binge drinking. RESULTS:The mean (SD) age of participants was 15.6 (1.7) years and 51.3% were boys. The proportions of students from middle schools, academic high schools and vocational high schools were 51.9%, 27.5% and 20.6%, respectively. In total, 22.8% (95% CI 21.6 to 23.9) of students reported drinking alcohol in the past 30 days and 9.2% (95% CI 8.5 to 10.0) of students reported binge drinking (defined as drinking four or more alcoholic drinks in 1-2?hours period among girls and five or more alcoholic drinks among boys) during the past month. The prevalence of binge drinking was highest among vocational high school students (17.9% vs 6.3% and 7.7% among middle school and academic high school students, respectively). Older age, studying at high school, poor academic performance, higher levels of physical activity, excessive screen-time, loneliness, insomnia, previous suicide attempt, cigarette smoking, fighting, being bullied and sexual experience were found to be positively associated with adolescent binge drinking. CONCLUSIONS:Binge drinking is common among middle and high school students in Zhejiang, China. Efforts to prevent binge drinking may need to address a cluster of sociodemographic and behavioural factors. Our findings provide information to enable healthcare providers to identify students at high-risk of binge drinking and to inform planning of intervention measures for at-risk students.

SUBMITTER: Wang H

PROVIDER: S-EPMC5898305 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Binge drinking and associated factors among school students: a cross-sectional study in Zhejiang Province, China.

Wang Hao H Hu Ruying R Zhong Jieming J Du Huaidong H Fiona Bragg B Wang Meng M Yu Min M

BMJ open 20180412 4

<h4>Objective</h4>To investigate the prevalence and correlating factors of binge drinking among middle and high school students in Zhejiang Province, China.<h4>Methods</h4>We performed a cross-sectional study using data from a school-based survey. A total of 23 543 (response rate=97.5%) eligible adolescents from 442 different schools (including middle schools, academic high schools and vocational high schools) were asked to fill in an anonymous self-administered behaviour questionnaire between A ...[more]

PMID: 29654047

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Project description:BackgroundObesity has been identified as a major risk factor for a large number of chronic diseases. Understanding factors related to adolescent obesity is critical for prevention of chronic diseases. The associations between sleep duration and obesity among adolescents in the existing literature are controversial. Our study was designed to determine the prevalence of short sleep duration, and assess the association of sleep duration and obesity, among middle and high school students in Zhejiang, China.Methods18,403 Students in 442 schools were recruited and surveyed using an anonymous, self-administered questionnaires. Weighted multivariable logistic regression models were used for data analyses.ResultsThe mean (SD) age of the students was 15.9 (1.8) years. 49.7% of students were girls. The mean (SD) height and weight were 166.2 (8.5) cm and 54.6 (11.1) kg, respectively. The overall prevalence of obesity and overweight were 3.4% (95% CI: 3.0-3.8) and 7.8% (95% CI: 7.4-8.3), respectively. The overall prevalence of short sleep duration among students was 66.0% (95% CI: 63.8-68.1), higher among girls than boys (69.8% vs. 62.1%) (P?<?0.0001). The figures for middle school, academic high school, and vocational high school were 59.0, 82.4 and 59.7%, respectively (P?<?0.0001). As compared with girls who sleep 8 h per day (reference), the odds ratios (95% CI) of obesity for girls who sleep <?7 h, 7 h, 9 h and???10 h were 1.97 (1.15-3.38), 1.90 (1.18-3.04), 1.38 (0.86-2.20) and 2.12 (1.22-3.67) respectively, after adjustment for socio-demographic status, lifestyle factors, and mental health. The corresponding figures among boys were 1.45 (0.97-2.16), 1.13 (0.81-1.57), 1.25 (0.89-1.74), and 1.12 (0.81-1.54), respectively.ConclusionsInsufficient sleep is prevalent among students in Zhejiang China. A U-shaped relationship was found between sleep duration and obesity risk among girls, with the lowest risk among those who slept for 8 h, but not among boys. Adequate sleep duration may be an important component of obesity prevention initiatives among adolescents.

Project description:BackgroundTo summarize the general status of nonsuicidal self-injury (NSSI) behaviour and the characteristics of junior high school students and to determine the risk factors associated with NSSI behaviour.MethodsFive middle schools in the rural and urban areas of Hainan Province were randomly selected for this cross-sectional study, and junior high school students were administered questionnaires, including the General Sociodemographic Questionnaire, Ottawa Self-Injury Scale, Anxiety Self-Rating Scale, Depression Self-Rating Scale, Adolescent Lifestyle Scale, and Parenting Style Scale.ResultsThe NSSI rate among junior high school students in Hainan Province was 28.9%, with a higher prevalence among girls than boys (P < 0.05). The age range was 11-16 years, with a mean age of 13.08 ± 0.911 years. The most common form of self-injury was scratching/bruising, followed by hitting oneself, pulling out hair, biting, head banging, and cutting. The NSSI methods of scratching/bruising, hitting oneself and cutting more commonly occurred in girls than boys (P < 0.05). The most common sites of self-injury were the face, scalp, lips, forearm/elbow, axilla/wrist, hands/fingers, and thighs/knees. Significant differences were observed in the distribution of self-injury sites (nose, lips, genitals, and axillae/wrists) between the two genders (p < 0.05). The most important motivation for undertaking NSSI behaviours was to release negative emotions. The risk factors affecting NSSI behaviours were female gender (OR = 1.793), depression (OR = 1.961), anxiety (OR = 1.495), interpersonal relationship factors (OR = 1.099), academic stress factors (OR = 1.062), maternal emotional warmth (OR = 0.97), and maternal overinterference (OR = 1.036).ConclusionsThe NSSI rate among junior high school students in Hainan was 28.9%, affecting girls more than boys. The form and site of self-injury between boys and girls were significantly different. The motivation for committing self-injurious behaviours was mainly to regulate bad emotions. Risk factors for NSSI behaviours included female gender, anxiety, depression, interpersonal relationship factors, academic stress factors, and maternal emotional overinterference, while maternal emotional warmth was a protective factor.

Project description:BackgroundHuman infection of avian influenza virus (AIV) remains a great concern. Although live poultry markets are believed to be associated with human infections, ever more infections have been reported in rural areas with backyard poultry, especially in the fifth epidemic of H7N9. However, limited information is available on backyard poultry infection and surrounding environmental contamination.MethodsTwo surveillance systems and a field survey were used to collect data and samples in Zhejiang Province. In total, 4538 samples were collected by surveillance systems and 3171 from the field survey between May 2015 and May 2017, while 352 backyard poultry owners were interviewed in May 2017 by questionnaire to investigate factors influencing the prevalence of avian influenza A virus and other AIV subtypes. RT-PCR was used to test the nucleic acids of viruses. ArcGIS 10.1 software was used to generate maps. Univariate and logistic regression analyses were conducted to identify risk factors for AIV infection.ResultsOf the 428 poultry premises observed by the surveillance system, 53 (12.38%) were positive for influenza A virus. Of the 352 samples from poultry premises observed by field survey, 13 (3.39%) were positive for influenza A virus. The prevalence of AIV was unevenly distributed and the dominant subtype differed among cities. Eastern (Shaoxing and Ningbo) and southern (Wenzhou) cities exhibited a higher prevalence of AIV (16.33, 8.94, and 7.30% respectively). Contamination of AIV subtypes was most severe in January, especially in 2016 (23.26%, 70/301). The positive rate of subtype H5/H7/H9 was 2.53% (115/4538). Subtype H5 was the least prevalent, while subtypes H7 and H9 had similar positivity rates (1.50 and 1.32% respectively). Poultry flocks and environmental samples had a similar prevalence of AIV (4.46% vs 5.06%). The type of live birds was a risk factor and the sanitary condition of the setting was a protective factor against influenza A contamination.ConclusionsAIV subtypes were prevalent in backyard poultry flocks and surrounding environments in Zhejiang Province. The types of live birds and sanitary conditions of the environment were associated with influenza A contamination. These findings shine a light on the characteristics of contamination of AIV subtypes and emphasize the importance of reducing AIV circulation in backyard poultry settings.

Project description:OBJECTIVES:To describe the basic demographical characteristics of whole blood donors in Zhejiang Province, China, from 2006 to 2015 and to examine the trends in individual characteristics associated with blood donation and the relationship between weight and donation. DESIGN:Cross-sectional study comparing characteristics of blood donors and annual donations for the period 2006 to 2015. SETTING:Urban and rural communities in Zhejiang, China (11 cities, 89 districts or counties and 1379 townships). PARTICIPANTS:3 226 571 volunteer blood donors. OUTCOME MEASURES:Volume of each whole blood donation and donation frequency. All data were collected by trained staff and entered into a standardised electronic information system. RESULTS:The number of blood donations generally trended up in Zhejiang Province from 2006 to 2015. Donors were predominately males aged 18 to 25 years, but this major donor age group shifted to the 26 to 45 year range by 2015. The rate of repeated blood donation was 30.8 per cent. The blood volume per donation concentrated in 200 mL and 400 mL categories has been gradually shifted to 300 mL and 400 mL. Approximately one-third of donors had a college education. The average weight of donors increased over time for both men and women. Both the blood volume of each donation and donation frequency were proportional to weight. CONCLUSIONS:The trend of voluntary non-remunerated blood donation in Zhejiang province is positive. However, given the expected growth in demand for whole blood, more research is needed to increase both the donor pool and the rate of repeated donation. The relationship between body weight and blood donation warrants further study because while improving nutritional status is associated with higher average donation volume and more frequent donations, overnutrition may lead to poorer quality of donated blood. Blood donation may present a unique opportunity for health education and body weight management to monitor and improve population health.

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Binge drinking and associated factors among school students: a cross-sectional study in Zhejiang Province, China.

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Binge drinking and associated factors among school students: a cross-sectional study in Zhejiang Province, China.

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