Objective: To investigate the mortality characteristics and trend of coronary heart disease in Jiangbei District, Ningbo City, Zhejiang Province, from 2014 to 2023, so as to provide evidence evidence for improving coronary heart disease prevention and control strategies. Methods: Data on mortality of coronary heart disease in Jiangbei District from 2014 to 2023 were collected through the Ningbo Chronic Disease Collaborative Management System. The crude mortality was calculated, and the China-standardized mortality was calculated using the the Seventh National Population Census in 2020. The average annual percent change (AAPC) was used to analyze the trends in mortality of coronary heart disease across different gender and age group from 2014 to 2023. Results: A total of 1 171 deaths of coronary heart disease in Jiangbei District from 2014 to 2023 were reported. The crude mortality and standardized mortality were 44.98/105 and 33.00/105. The crude mortality was higher in males than in females (50.55/105 vs. 39.69/105, P<0.05). The crude mortality increased slowly in the group aged 15-<60 years, rose rapidly after ≥60 years, and peaked at 1 386.80/105 in the group aged ≥85 years. The crude mortality of coronary heart disease was higher in the ≥60 age group than in the 15-<60 age group (168.11/105 vs. 4.84/105, P<0.05). The crude mortality of coronary heart disease in the total population, males, and females increased with age (all P<0.05). From 2014 to 2023, the standardized mortality of coronary heart disease in the total population, males, and females showed upward trends (AAPC=4.565%, 3.416%, and 6.398%, all P<0.05). The crude mortality in the ≥60 age group showed an upward trend (AAPC=6.199%, P<0.05), while the trend in the 15-<60 age group was not statistically significant (P>0.05). Conclusions From 2014 to 2023, the mortality of coronary heart disease in Jiangbei District showed an upward trend. Males and the elderly population had higher mortality with increasing trends, making them key populations for coronary heart disease prevention and control, while the young and middle-aged population had relatively stable mortality.

Objective : To estimate the prevalence and risk factors of suicide ideation,suicide planning and suicide attempts among middle school students and to provide reference for suicide intervention. Methods : The students of grade 7 to 12 in Ningbo were recruited through multi-stage random sampling method. A self-reported questionnaire survey was conducted to collect the information about suicide ideation,suicide planning and suicide attempts within 12 months. A multivariate logistic regression model was used to analyze the risk factors for the three aspects of suicide among middle school students. Results: A total of 10 729 questionnaires were sent out and 10 726 valid ones were collected,with a validity rate of 99.97%. The prevalence rates of suicide ideation,suicide planning and suicide attempts among middle school students during the last 12 months were 12.93%,4.54% and 5.06%,respectively. The results of multivariate logistic regression analysis indicated that females（OR：1.397-1.575,95%CI：1.178-1.927）,students of grade 7 to 9（OR：1.625-1.824,95%CI：1.323-2.082）,poor health condition（OR：1.160-2.131,95%CI：1.005-2.985）,loneliness（OR：1.574-4.423,95%CI：1.221-5.254 ）,desperation（OR：2.796-3.232,95%CI：2.400-3.990）,anxiety（OR：1.890-2.117,95%CI：1.503-2.496）,less than 8 hours a day of sleep（OR：1.152-1.263,95%CI：1.030-1.594）,smoking（OR：1.476-2.074,95%CI：1.055-3.072）,drinking（OR：1.479-1.863,95%CI：1.271-2.296）,fighting（OR：1.716-1.941,95%CI：1.330-2.422）and school bullying（OR：2.254-3.292,95%CI：1.342-5.277）were common risk factors for suicide ideation,suicide planning and suicide attempts;physical activity（OR：0.597-0.720,95%CI：0.474-0.923）was a common protective factor for suicide ideation,suicide planning and suicide attempts. Conclusion Females,lower grade,poor health condition,loneliness,desperation,anxiety,lack of sleep,smoking,drinking,fighting,school bullying and physical activity were influencing factors for suicidal behaviors.