Trends in winter excess mortality in Mexico 1991 - 2008
Objective: Analyze the mortality by all causes in México during the Winter season. Methods: We extracted and tabulated data on monthly all-cause mortality in the general population from 1991 to 2008 from database INEGI. Coefficients of seasonal variation in mortality were calculated. Results: An increase of 15 % in mortality for general population during Winter was observed during the studied period. The more susceptible age groups were old people and children with an increase of winter deaths of 19 % and 11 % respectively. Months with low levels of mortality were April, October and September for children, adolescents and old people respectively. Conclusions: In Mexico winter months shown the highest levels of mortality. The increase in mortality is similar to some Mediterranean countries. More susceptible age groups correspond to child and old people. Months with low levels of mortality are different for each age group. In México it is necessary identify the main factors that contribute to low mortality among different months according age groups.