In the framework of Japanese suicide prevention, demand for stronger efforts in local government seems to be increasing year by year. Large-scale disasters, effects of the coronavirus pandemic, and conflicts have made people feel uneasy and the nationwide suicide mortality rate in Japan has begun to increase once again. In females, the suicide rate, which was previously thought to be lower than that in males, has been increasing rapidly. Moreover, there have been increased suicides in young people.
 Considering such circumstances, we aimed to assess a municipal project: a counseling and support project for suicide attempters in Osaka City (Inochi-no-soudan Support Project), which approaches its 10-year milestone, and to optimize interventions and support based on the evidence from quantitative evaluation for suicide risk. Furthermore, we would like to develop our support to be more tailored to local characteristics and educational activities for raising public awareness as a populational approach.
 To evaluate the risks of suicide ideation associated with various factors, we aimed to analyze a dataset of all registered cases between 2009 and 2020 by multivariate analysis; however, we couldn't get an eligible dataset because all the paper-based registrations were not linked to individual suicide attempters throughout Osaka City's 24 ward areas. We compared the age distribution of all registered cases with publicly available findings and administrative reports based on datasets of emergency activity records in Osaka City. We also examined the impact of the coronavirus pandemic.
 The number of suicide attempters in Osaka City was estimated to be about 3,000 per year, of which about 500 (17%) were registered to the Inochi-no-soudan Support Project, based on the information provided by the police. Most suicide attempters were aged in their 20 s or less. Moreover, female attempers were two to three times more than male attempters. Almost 40% of suicides were by overdose, followed by knives (30%), and both jumping to their death and hanging were 10% or less. Among those who reported having an alcohol-related disorder, self-harm under the influence of alcohol accounted for 60% of suicides. Total cases were 3,837 between 2009 and 2020 and of those 10 died by suicide and 4 died from other causes in the follow-up period.
 There are few municipal projects for suicide prevention that target the suicide attempter and collaborate with the police in Japan; however, our findings suggest that the municipality has not yet caught up to the infrastructure for safe and accurate data-sharing, because of the difficulties of handling personal data of subjected persons, administrative burdens, and barriers to obtain individuals' consent. In order to conduct appropriate assessments for suicide risks and evaluate the validity of the project itself, it is necessary to convert the current paper-based registries into electronic data, which will enable us to perform quantitative and appropriate analyses of the obtained data from the project, and address evidence-based approaches to improve local programs for suicide prevention.
 Author's abstract