Objective To study the trends of mortality rate of lung cancer among residents aged above 30 yrs in Yancheng city from 1976 to 2006.Methods The death registry data were collected and analyze on mortality of lung cancer in Yancheng city from 1976 to 2006 to find the trends in different gender,age,time and birth cohort.Results A total of 4 946 cases died from lung cancer in the city from 1976 to 2006 in people aged above 30 yrs.The annual crude general mortality rate was 49.26 per 100 000.The annual crude mortality rate of lung cancer in male(68.77/100 000) was significantly higher than that in female(29.61/100 000,P

Objective To describe the prevalence and distribution of anxiety disorders among people aged 18～65 yrs in Liaoning Province. Methods 15 518 subjects in 7 200 families aged 18～65 yrs were randomly selected from 3 cities and 3 counties by multi-stage stratified random cluster sampling.They were assessed for DSMⅢ-R diagnoses by face to face interview with Composite International Diagnostic Interview(CIDI-1.0). Results There were 13 359 subjects had finished the survey,and the response rate was 86.09%.The 2-week,12-month and lifetime prevalence of anxiety disorders were 2.22%,4.60% and 7.21% regulated by Liaoning provincial population in 2000,and1.91%,3.97%and6.32% regulated by countrywide population in 2000.The major disorders were specific phobia and agoraphobia,and their lifetime prevalence were 3.80% and 3.04%,respectively.The people with higher prevalence were females,aged 25~55,with lower educational and economic level. Conclusion Anxiety disorders become a serious public health problem in Liaoning province.Prevention measures should be taken among people with high risk.

Objective To understand the prevalence rate of mild cognitive impairment(MCI) of the aged people in the communities of Taiyuan,and to provide evidence for early diagnosis of Alzheimer's disease(AD). Methods Using a simple mental state examination(MMSE),2895 aged people of over 60 years from three communities of Wanbailin in Taiyuan were selected by cluster random sampling method.The MCI elderly patients screened were investigated further by using community health status questionnaire.Results The average MCI prevalent rate of the aged people was 7.6%;Age,marital status and education background significantly affected prevalent rate(P

Objective To investigate the detection rate of IAD or IAT and the degree of depression,anxiety and self-conscious-symptoms of IAD or IAT cases in adolescent students,and to analyze the relationship between IA and mental health.Methods 8 694 students from 9 schools in Tianjin by systemic stratified random sampling were investigated on the conditions of internet using and state of psychological and body health with questionnaire designed by ourselves.Result Among the students with internet using,the detection rate of depression was 24.47%.The detection rate of depression in students using internet is 24.47%.IAD,IAT and Non-IA are 32.16%,26.83%,23.17%,respectively.The detection rate of anxiety in students using internet is 3.32%.IAD,IAT and Non-IA are 12.13%,3.72%,2.26% respectively.There was a linear correlation of IA with the degree of depression and anxiety(P

Objective To investigate the status of internet addiction among adolescent students of Tianjin and analyze its related factors.Methods Stratification cluster random sampling method was used in this questionnaire survey among nine schools of Tianjin.The data was analyzed by logistic regression with SPSS11.5.Results The results showed that the Family harmony(OR=0.433),good personal education achievement(0.645),and sports participation(0.705) were the protective factors,while the Family member accident(OR=1.735) was the risk factor for IAD in adolescent students.Good Family economic conditions(OR=0.793),Family harmony(0.778),good personal education achievement(0.787),and sports participation(0.750) were the protective factors,while subsidization(OR=1.404) and family member accident(1.244) were the risk factors for IAT in adolescent students.Conclusion Family has close relationship with the formation of adolescents' IAD.Besides,personal education achievement and sports participation also have good influence on the formation of IAD.

Objective To evaluate the relationship between Internet addiction disorder(IAD),Internet addiction tendency(IAT) and behavior type A of young students aged ≥16 years in urban districts,Tianjin.Based on the result,the intervention resolution suggestion was put forward.Methods 4 484students(male2 331,female2 153) anonymously completed the Questionnaire on Situation of Internet Using of Students compiled for this study and the Questionnaire on types of Northern Chinese adult's Behavior.All data was recorded with the evaluating system for adolescent Internet addiction.Result There are 306(6.82%) cases of IAD and 600(13.83%) of IAT among the students.The screened positive rate in boys was 9.87% for IAD and 15.66% for IAT,which significantly higher than those in girls(3.53%,10.92%).The rates in students with behavior type A and type M were the same but significantly higher than that in students with behavior type B.After weighing cases by power on learning stage and sex,the results showed the prevalent rates of IAD and IAT in students with behavior type A and type sub-A were significantly higher than those in students with behavior type M,type sub-B and type B.After weighing cases by power only on learning stage,the positive rates of IAD were higher in students with behavior type A(8.87% in high school students,11.11% in college students) than those in students with type M(7.77%,7.81%) and type B(4.35%,4.44%).Conclusions The results show a significant relationship between IA and behavior type A in students.It should be strengthened to take psychological intervention for young students,especially for students with high risk of IA and IAT in senior high schools.

Objective To know the prevalence and distribution of Internet Addiction Disorder(IAD) among the adolescent students in urban districts in Tianjin.Methods This survey was carried out during November,2006 to April,2007 with Stratified cluster random sampling method.8225 questionnaires were valid among 8694 participants.Xing Yi's IAD diagnosis standard was used on the survey.Internet Addiction Tendency(IAT)by our definition was those students who had 3 or 4 of 10 indicators.The national standard population proportion of school students from junior high school to college in 2000 were used in weighing cases by power.Results 1.The detection rates of IAD between students online 2,3 or 4 hours per day were significantly different of the check out rate of IAD from the students on-line 2,3,or 4 hours per day,except time factor in the indicators;2.The detection rates of IAD between students with different learning stage or education system were also significantly different;the highest rate was among the students at special technical secondary school(11.69%),then followed by technical college and college students(6.74% and 6.73%),and junior high school and senior high school students(5.98% and 5.95%).The detection rates of IAT were increased by learning stage;the lowest rate was 8.65% in junior high school students,followed by 12.11% in high school students,13.96% in technical secondary school students,15.58% in technical college students and 16.73% in college students;3.After weighing case by power on learning stage or education system,the total IAD prevalence was 6.90%,9.50% for boys and 4.17% for girls.Total IAT prevalence was 11.78%,14.43% for boys and 8.96% for girls;4.For students in area with higher economic level,the rates of IAD and IAT were 4.16% and 8.27%,respectively,lower than those in other economic levels;5.Both IAD and IAT prevalent rates were no significant difference between the key high schools and common high schools.Conclusion The students of special technical secondary schools are high risk population for IAD and IAT.Students in area with higher level of economic have lower rates of IAD and IAT.It is suggested that it is needed to carry out health education on Internet using among the adolescent students together with family,school and social good environment.

Objective To develop an evaluating system for Internet addiction disorder(IAD) of adolescent and college students.Methods This system was a C/S mode system and developed by vb.net and SQL Server 2000,it had automatic logical control function.All the investigated subjects answered and filled the questionnaire on the computer with the system,then the data transformed into the database which could be analyzed by the administrator or statistical personnel.Result The system could evaluate whether the student had addicted to Internet and save all data in the database.Conclusions This software system is useful for group investigation and students self-evaluation on IAD,which is helpful to master the condition of IAD in students.

Objective To investigate the status of diabetes and its risk factors in Karamay.Methods A sampling survey was carried out in Baijiantan district of Karamay from March,2003 to Dec.,2003,all subjects aged 20 to 75 and lived 5 years and above were selected with stratified sampling method according to the age structure of the inhabitants in Karamay.Results Diabetes prevalence was positively correlated with age(OR=1.047),male(OR=1.922),obesity(OR=1.641),hypertension(OR=1.624) and hyperlipidemia(OR=2.131)(P

Objective To compare the characteristics and abnormity of lipid metabolism among three groups of population in Yangpu.Methods The data of blood lipids of three subpopulations were collected by epidemiologic investigation and experimental examination.Results The abnormal rates of total cholesterol and triglycerides were 50.85% and 56.91% in patients with coronary heart diseases;41.28% and 46.82% in patients with diabetes,23.58% and 32.46% in staffs of enterprises.The abnormal rates of total cholesterol and triglycerides were 43.55% and 51.75% in over-weight subjects,and all of them were higher than those in subjects with normal body mass index.The abnormal rate of triglycerides was significant higher in subjects with abnormal ratio of waist-hip(46.35%) than that with normal ratio(39.77%,P