Objective To study the current situation of the network involvement and related behaviors among adolescents,and provide scientific evidence for targeted interventions. Methods Totally 8 schools were chosen by stratified cluster sampling."Questionnaire of Health Related Behavior among Adolescents" was administered among 2 010 students. Results In the past 7 days,the proportion of students surfed the internet,spent more than 4 hours on the internet and video games was 84.5%,11.9% and 11.3% respectively; Main purposes were films (60.2%),chat (51.6%),data (50.0%) and news(37.6%);In the past 12 months,11.1% of the teenagers had browsed pornographic websites and approached audio-visual products.The proportion of senior middle school students(15.3%) and boys(18.2%) were higher than junior middle school students(6.7%) and girls(4.9%) (χ2=37.425 and 90.479 respectively,P<0.001);The proportion of boys(14.9%) and senior middle school students(15.9%) accessed sexual knowledge via the internet were higher than girls (8.8%) and junior middle school students(7.1%)(χ2=18.293 and 36.523 respectively,P<0.001). Conclusions Network usage among students is common.Excessive use should need attention which may bring adverse effect on physical and mental health of youth.Appropriate measures should be adopted.
Key words
internet /
behavior /
adolescent /
student
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