INTRODUCTION: The results of previous studies of the association between gender and mortality following hospital admission due to acute myocardial infarction are inconsistent. National data for Germany have been lacking to date. Hence the objective of this study was to analyze this association on the basis of a nationwide dataset. METHODS: The analysis was carried out using insurance claims data from inpatients insured by the statutory health insurer AOK, whose main diagnosis was acute myocardial infarction and who were discharged from hospital in the years 2004 and 2005. Several mortality endpoints were used, including 30-day mortality and one-year mortality. RESULTS: 132 774 male and female patients were included. Crude analyses showed a pronounced excess mortality in women (odds ratio 30-day mortality = 1.65; 95% confidence interval = 1.59 to 1.70). However, after adjustment for age (in decentiles) practically equal mortality was observed for female and male patients (odds ratio 30-day mortality = 1.00; 95% confidence interval = 0.96 to 1.03). Only in the comparatively small group of male and female patients up to the age of 50 was a slightly increased mortality observed in women (odds ratio 30-day mortality = 1.09; 95% confidence interval = 0.85 to 1.40). DISCUSSION: To our knowledge, this study is the first nationwide analysis focusing on the association between gender and survival following hospital admission due to acute myocardial infarction. Different results from earlier regional studies may be explained by selection bias or inadequate risk adjustment.
INTRODUCTION: The results of previous studies of the association between gender and mortality following hospital admission due to acute myocardial infarction are inconsistent. National data for Germany have been lacking to date. Hence the objective of this study was to analyze this association on the basis of a nationwide dataset. METHODS: The analysis was carried out using insurance claims data from inpatients insured by the statutory health insurer AOK, whose main diagnosis was acute myocardial infarction and who were discharged from hospital in the years 2004 and 2005. Several mortality endpoints were used, including 30-day mortality and one-year mortality. RESULTS: 132 774 male and female patients were included. Crude analyses showed a pronounced excess mortality in women (odds ratio 30-day mortality = 1.65; 95% confidence interval = 1.59 to 1.70). However, after adjustment for age (in decentiles) practically equal mortality was observed for female and male patients (odds ratio 30-day mortality = 1.00; 95% confidence interval = 0.96 to 1.03). Only in the comparatively small group of male and female patients up to the age of 50 was a slightly increased mortality observed in women (odds ratio 30-day mortality = 1.09; 95% confidence interval = 0.85 to 1.40). DISCUSSION: To our knowledge, this study is the first nationwide analysis focusing on the association between gender and survival following hospital admission due to acute myocardial infarction. Different results from earlier regional studies may be explained by selection bias or inadequate risk adjustment.
Entities:
Keywords:
cardiology; gender studies; health service research; mortality; myocardial infarction
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