Participant and public involvement
DISEASE
The development of the research questionnaire and outcome measures was informed by a study by Ma, The study recruited 8966 and 1721 students for two phases, respectively, for a total of 10 687. At the second phase of the study, 896 (544 and 352 students from the intervention and control groups, respectively) were excluded after graduation (in China, students in elementary, middle and high schools generally do not change schools except after graduation). Informed consent was obtained from all subjects (parents or legal guardians provided consent for subjects aged less than 18 years).The intervention group received the integrated intervention, and the control group received general health education prior to the final evaluation. At the start of the program, we collected 8390 responses to the self-reported questionnaire out of 8966 students in Grades 3–8 in the two towns. Out of the 8390 responses, 73 were excluded due to missing information. Prior to the end of the program, the study collected a total of 9791 responses from students in Grades 3–9 for both groups for the final evaluation survey. Out of 9791 responses, the study further excluded 34 due to missing information (Basic characteristics of the two townsInstitutions involved in the study will also help with the dissemination of the findings: we intend to demonstrate the results to local authorities to enforce the incorporation of the intervention in the future and engage the development of drowning policies.Institutions did not assess the burden of the intervention, because the project was funded by the National Centre for Chronic Non-Communicable Disease Control and Prevention, Health Commission of Guangdong Province.