Objective: To explore the status and related factors of excessive Internet and game use among primary and junior high school students with different household registration in Shanghai, and to provide a reference for creating healthy digital media usage family environment among children. Methods: A questionnaire survey was conducted among 2 324 students and their parents from 4 primary schools, 4 middle schools in Shanghai. The sociodemographic characteristics, Internet Addiction Test, Game addiction scale and Family APGAR Index were investigated. Results: Excessive internet use rate and the excessive game use rate was 16.1% and 9.4%, respectively. Low family economic status( OR =2.07), motivation type of Internet use to maintain emotional arousal ( OR =5.44) or to satisfy social function( OR =8.72), peer all the time gaming use( OR =2.21), peer gaming invitation( OR =1.85, 2.56, 2.53), family dysfunction above moderate( OR =2.62, 2.68) were positively associated with excessive internet use( P <0.05). Lack of confidence in their studies( OR =2.11, 4.14), motivation type of Internet use to maintain emotional arousal( OR = 4.82 ) or to satisfy social function( OR =6.09), peer often( OR =2.84) or all the time gaming use( OR =3.92), family dysfunction above moderate( OR =2.57, 2.16) were associated with excessive game use( P <0.05). Conclusion There is no significant difference in the excessive Internet and game use among children with different household registration.It is suggested that should attach importance to peer influence and family function, advocate schools and families to create a good environment for children s digital media use, and promote children s healthy development.

Objective To explore the factors related with relapse of patients with schizophrenia, and to assess the effect of management on this population. Methods 368 patients who were first episode and hospitalization in 2007 were recruited, and investigated with the Live Events Scale (LES), Social Support Rating Scale (SSRS). They were divided into control group (only antipsychotic treatment, n=184) and management group (severe mental illness management, n=184) and accepted the management for 5 years. Results The single factor regression showed that age, marriage and family history were not related with schizophrenia relapse (P>0.05). Gender, duration of untreated psychosis (DUP) and negative life events were risk factors of relapse (P<0.05); Education, medication adherence and social support were protective factors of relapse (P<0.05). Multivariate regression analysis showed that medication adherence, social support and negative life events were the main factors related with relapse (P<0.05). The rate of relapse was lower in the management group than in the control group (P<0.05). Conclusion Medication adherence, social support and negative life events are the main factors related with relapse. Management on the schizophrenia is one of the most important ways to reduce schizophrenia relapse.