Abstract: Objective To investigate the awareness of the risk factors of acute myocardial infarction (AMI) in community residents over 35 years old in Tianjin and provide a basis for formulating targeted health education. Methods Multi-stage stratified random sampling was used to select 4 122 community residents over 35 years old in Tianjin, and selfdesigned questionnaires were used to investigate the awareness of AMI risk factors. Multivariate Logistic regression analysis was used to analyze factors that may affect the good knowledge of AMI risk factors. Results The average number of AMI risk factors that community residents could correctly identify was (5.1±2.9). 10.9% (451 cases) of the respondents could identify all the 10 risk factors, while 2.6% (107 cases) of the respondents could not identify any AMI risk factors. The three most-known risk factors for AMI were hypertension (70.0%), family history of premature coronary heart disease (62.2%) and hyperlipidemia (58.3%). Per capita monthly income ≥ 8 000 yuan (OR=1.533, 95%CI: 1.110-2.118), having medical insurance (OR=3.106, 95%CI: 1.941-4.969), hypertension (OR=1.338, 95%CI: 1.160-1.543), regular annual physical examination (OR=1.447，95%CI: 1.256-1.668), immediate family members with history of cardiovascular disease (OR=1.580, 95%CI: 1.378-1.811) and university and above education (OR=1.322, 95%CI: 1.139-1.535) showed a relatively high level of cognition of risk factors for AMI. Conclusion Residents over 35 years old in Tianjin havea moderate level of cognition for AMI risk factors, and they still lack sufficient knowledge. There is an urgent need for effective targeted education strategies to improve community residents’awareness of risk factors for AMI, especially low-income, low-level education and diabetes persons, so as to achieve the early intervention of controllable risk factors and reduce the incidence of AMI.

Key words: myocardial infarction, acute disease, cardiovascular diseases, risk factors, cross-sectional studies, awareness status