seasonal pattern in occurrence and in-hospital fatality rate from traffic accidents in isfahan, iran

background:accident is the secondary cause of mortality in iran, background of its occurrence and mortality are not wholly understood. the aim of this paper is to explain seasonal occurrence and mortality pattern of traffic accidents in isfahan population, iranmethods: this study is a cross-sectional analytic study. we extracted data on traffic accidents for isfahan province from the ministry of health (moh). for analysis independent t test, anova test, chi-square test was used. to calculate the odds ratio of death in hospital from traffic accidents, logistic regression model was usedresults: the highest hospital admission for traffic accidents was seen during the summer and lowest during the autumn, they increased 43.35%, 97.8% and 03.5% during the spring, summer and winter, respectively than the autumn. odds ratio for death from traffic accident during spring were (1.88 ci 95% 0.98-1.42), summer (1.4 ci95% 1.18-1.67) and in autumn (1.4 ci95% 1.15-1.7),in male were (1.33 ci95% 1.15-1.54) and in age group 21-40 were (1 ci95% 0.87-1.16),41-60 (1.62 ci95% 1.36-1.92),61≥(3.94 ci95% 3.3-4.71) and in out of urban-rural (2.44 ci95% 2.09-2.85),rural (3.1 ci95% 2.64-3.64) and in motor vehicles(1.5 ci95% 1.3-1.73)and in pedestrians(1.76 ci95% 1.5-2.06)conclusion: there are seasonal variations in occurrence and mortality due to traffic accidents. the highest occurrence of traffic accident was during summer, and the lowest rate in autumn. the highest in hospital mortality rate was observed in summer and the lowest in winter. after adjusting the model, the risk of in-hospital mortality was significant for gender,age,season, type of accidents and accident place