RESUMO
Objective To observe the relationship between temperature and the incidence of acute coronary heart disease. Methods After controlling long time trend season and other confounding factors the relationship between temperature and incidence rate of acute coronary heart disease was explored by using generalized additive models GAMs and the relationship between temperature and acute coronary heart disease specified by age gender disease history was also explored. Results The incidence of acute coronary heart disease began to be higher than the baseline as weekly average temperature was lower than 6 ℃ and it increased with the weekly average temperature decreasing. The relationship between weekly average temperature and the incidence of acute coronary heart disease was found similar among different population groups but relative risk and dangerous temperature range were different. Conclusion Low temperature cold easily induces the acute coronary heart disease in males aged over 65 years or with history of acute coronary heart disease.