Objective:The study is to compare the prevalence and related factors of suicidal ideation in ado-lescents between China and Philippine.Methods:Our research data was downloaded from the website of world health organization (WHO).It was the data of China and Philippine from the Global school-based student health survey(GSHS)which was launched by the WHO,and 9173 students in China and 7338 students in Philippine aged 11 -16 years were involved.The situations of being serious injury,being bullied,sense of loneliness,insomnia, sense of hopelessness,friends,smoking,alcohol consumption,drug abuse and exercise were assessed by the ques-tionnaire.The definition of suicidal ideation was that ever thinking of suicide seriously in the last 12 months.Results:The rate of having suicidal ideation in China and Philippine were 17.4% (1544 /8881 )and 19.3% (1371 /7089),respectively.Multivariate analysis showed that female (OR =1.45),grade two and three of middle school (OR =1.29,1.43),being serious injury (OR =1.35),being bullied (OR =1.87),sense of loneliness (OR =1.47),insomnia (OR =1.55),sense of hopelessness (OR =3.36),alcohol consumption (OR =1.45)and drug abuse (OR =1.55)were the risk factors to suicidal ideation in China adolescents,and having good friends (OR=0.66)and exercise regularly (OR =0.78)were the protective factors.However,the female,grade,sense of lone-liness,insomnia and drug abuse were not the risk factors to suicidal ideation in Philippine adolescents,and other fac-tors were similar to China sample.Conclusion:There may be differences in the prevalence rate of suicidal ideation between adolescents in China and Philippine,with lower rate in China.Meanwhile,there are similarities in the relat-ed factors on the adolescent suicidal ideation of the two countries,with more risk factors in China sample.Therefore,the individualized targeted measures should be taken to prevent suicide in China and Philippine respectively.

Objective To describe the prevalence rates of smoking,quitting and passive smoking in different populations on their status of education,occupation and geographic distribution.Methods A total of 13 408 residents aged 15-69 from 45 counties through stratified multi-stage cluster sampling from Zhejiang province were selected and surveyed,using questionnaires.Data from 13 326 subjects were used for analysis.Indicators as smoking,current smoking,and secondhand smoke exposure,etc.,were calculated by weight on age proportions from the 2010 census.Results Among the adults aged 15 years and older,there were an estimated number of 12.90 million (29.59％) smokers,with 9.99 million (22.92％) current smokers,8.45 million (19.38％) daily current smokers.The prevalence rates of smoking were 41.18％ for men,3.69％ for women,with 45-54 year-old group the highest (51.66％) for men while the group of 65-69 year-olds was the highest (4.62％) in women.The overall rate of quitting was 22.56％.40.19％ of the smokers had thought about quitting,with the main means as self-restriction (87.59％) in conducting the behavior of smoking cessation.Among those non-smokers at age 15 or older,it was estimated that 67.90％ (22.77 million) of them had been exposed to secondhand smoke.SHS exposure was the highest in the indoor workplace (62.84％),among all the venues.Knowledge on tobacco among residents seemed to be relatively poor,with only 31.52％ of the population were aware that smoking could cause serious three diseases (stoke,heart disease,and lung cancer).34.04％ of the population were aware that secondhand smoking could cause all the three diseases (heart disease,lung disease,and lung cancer).Conclusion Current prevalence of smoking in males in Zhejiang province remained at a high level,indicating that the publicity programs on the knowledge of smoking tobacco was not strong enough and the task of control smoking should be taken more arduously.

Objective To describe the prevalence of tobacco use among teenagers in different populations by sex and grades at school,and to provide evidence for the development of smoking control and health promotion programs.Methods A total of 4 797 teenagers selected from 36 schools through stratified multi-stage cluster sampling in Zhejiang province and were surveyed by using a questionnaire with 3 886 eligible ones for analysis.Indicators as tried smoking,current smoking,and secondhand smoke exposure,etc.,were calculated by weight on age proportions from the numbers of juniors in Zhejiang province.Results Prevalence rates of tried smoking and current smoking among teenagers were 10.91％ and 2.07％,respectively.7.72％ of the juniors were susceptible to future tobacco use.The prevalence rates of tried smoking were 15.65％ for boys and 5.58％ for girls,12.13％ in rural and 9.24％ in urban areas.Students from the 9th grade showed the highest rate (15.15％) while the 7th graders appeared the lowest level of susceptibility to future tobacco use (5.22％).The highest level of current smoking was seen in the group of "weekly allowance more than 30 Yuan,from parents"(4.07％).The prevalence of secondhand exposure to smoke in outdoor and indoor places,public transport,or at home were 57.60％,54.45％,46.97％,and 43.16％,respectively,among the teenagers.3 071 juniors (77.33％) saw the smoking scenes in the past 30 days but only 1 367 juniors (28.30％) were aware of the basic knowledge on tobaccos in class,in the past 12 months.Conclusions There were juniors who tried to smoke or were current smokers.The rate of secondhand exposure to smoking was high.A large number of the juniors were lack of education on knowledge related to tobacco control,in the classroom.It was important to promote and publicize the knowledge on tobacco so as to reduce the number of teenagers who were susceptible to future tobacco use.