Objective To learn about the incidence and epidemiological characteristics of breast cancer in parts of China by a survey of women's breast health. Methods Multi-stage stratified randomized cluster sampling of the cross-sectional study was applied in collecting data of women aged 25 to 70 in Shandong, Hebei, Jiangsu and Tianjin province. All subjects included in the investigation attended face-toface interviews and clinical breast examinations. Results 122 058 females aged 25-70 years old in three provinces and Tianjin metropolitan were included. 320 (58 incident cases) breast cancer cases were documented in this investigation, that is 262.2/105 in prevalence. There was a higher breast cancer prevalence in subjects aged 45 to 54 and aged 55 to 64 within one year. The standardized detection rate of 54.2/105 in rural areas was higher than urban areas' 45.3/105. Conclusion Carring out the screening of female breast cancer and popularizing the knowledge of breast cancer prevention consistently, which could improve the detected rate of breast cancer.

Objective: Non-suicidal self-injury (NSSI) in adolescents appeared prevalent and multifactorial. This study was to examine the associations between exposure to suicidal behaviors and NSSI in the Chinese adolescents. Methods: Participants included for analyses were 5 154 adolescent students who participated in the baseline survey in 2015 and the first follow-up survey in 2016 of the Shandong Adolescent Behavior and Health Cohort, but with no history of NSSI at the baseline survey. A self-administered structured questionnaire was used to collect data on demographics, behavioral and emotional problems, lifetime and last-year NSSI. Data on the history of exposure to suicide attempt or death of a family member, friend, or close acquaintance were also collected. Multivariate logistic regression methods were used to examine the associations between exposure to suicidal behaviors and NSSI. Results: In the baseline survey, mean age of the 5 154 participants was (14.49±1.48) years, with 48.5% of the participants as girls. Of the participants, 9.0% reported having been exposed to suicidal behaviors, including 6.0% reported to suicide attempt, 4.9% to suicide death, 7.3% to suicidal behaviors of friends/close acquaintances, and 3.1% to suicidal behaviors of relatives. The prevalence rates of NSSI in the last year were significantly higher in adolescents who had been exposed to suicidal behaviors than those who had not (P<0.05). Results from the multivariate logistic regressions showed that exposure to suicide death (OR=1.91, 95%CI: 1.22-3.01) or to suicidal behaviors of relatives (OR=1.79, 95%CI: 1.02-3.12) were both significantly associated with the increased risk of NSSI. Conclusions Experiences related to exposure to suicide-death or suicidal behaviors of relatives were associated with increased risk of NSSI in adolescents. After the suicide events, psychological counseling and health education programs set for high-risk groups were helpful in promoting physical and mental health and preventing the attempt of self-injury in teenagers.

Objective:To assess the relationship of suicide knowledge and attitudes toward suicide to self-esteem among village physicians.Methods:A cross-sectional study was implemented in Zoucheng City of Shandong province.Non-probability sampling was conducted to select participants.A self-made questionnaire and the Self-esteem Scale (SES) were used.The knowledge of suicide and attitudes toward suicide were measured with the General Social Survey (GSS) for suicidal attitudes,the Suicide Attitude Questionnaire (QSA) for nature of suicidal behavior and the Scale of Public Attitudes about Suicide (SPAS) for suicide knowledge,prevention of suicide,social importance of suicide and positive attitude to suicide.Results:The scores of subscales for nature of suicidal behavior,social importance of suicide,preventability of suicide and positive attitudes toward suicide were 2.7,27,60,and 67.Mean score of the SES was 31.Regression analysis revealed the correlations between the scores of attitudes for the approvals of suicide,prevention of suicide subscale and social importance of suicide subscale and Self-esteem Scale.The village physicians with higher SES score were more likely to disapprove suicide and tended to believe that suicide was an important social problem and preventable.Conclusion:Self-esteem of village physicians could be related to the attitudes toward suicide for the approvals of suicide,and to its social importance and prevention of suicide.

Objective: To explore the relationship between the level of mental stimulation and the suicide attempts of rural residents in Shandong Province. Methods: A 1:1 matched case-control study was designed to collect 1 200 cases from a survey of three suicide attempts in rural areas of Shandong Province. Controls were selected according to the following matched factors: age difference within 3 years, same gender, same village or neighboring village, no blood relationship, no suicide history. The basic characteristics of all subjects were collected through the questionnaire, and the level of mental stimulation of life events was measured. Multivariate conditional logistic regression model was used to analyze the relationship between the level of mental stimulation of life events and suicide attempts. Results: The mean age of the case group and the control group was both (36.6±0.3) years old, and 35.8% (430/1 200) were males in each group. The low-medium level of mental stimulation of negative life events in the case group was 16.7% (200/1 200) and 61.7% (740/1 200), respectively, which was higher than that in the control group, about 2.5% (30/1 200) and 29.3% (352/1 200) (all P values <0.05), respectively. A total of 11.1% (133/1 200) of the case group had positive life events, which was lower than that of the control group [16.8% (201/1 200)] (all P values<0.05). Multivariate logistic regression model analysis showed that after the adjustment of gender, age, place of residence, education level, marital status, occupation, family income, somatic disease, mental disorders, family history of suicide, and opposite life events, the low-medium and high level of mental stimulation of negative life events were risk factors for suicide attempts, with OR (95%CI) as 5.88 (4.53-7.64) and 13.94 (8.15-23.86), respectively. Mental stimulation of positive life events was protective factor of suicide attempts, with OR (95%CI) as 0.58 (0.41-0.82). Conclusion Mental stimulation of negative and positive life events were risk and protective factors for suicide attempts.