Geographical pattern of in-hospital mortality due to myocardial infarction in Iran

Background and purpose: So far, no spatial analysis of in-hospital mortality due to myocardial infarction (MI) has been conducted in Iran. The present study was performed to determine the geographical pattern of mortality due to myocardial infarction in Iran. Materials and methods: In a prospective hospital-based study, we used the data of cases with MI registered by Myocardial Infarction Registry of Iran, 2012. For spatial analysis, LISA, Global Moran’s I, and Getis-Ord’s statistics were used. Data was analyzed using Stata software and ArcGIS 9.3 Results: A total of 20,750 patients was admitted to hospital due to MI and 2511 (12.1%) deaths occurred (median age at death: 65.2 ± 15.2). The incidence of death from MI did not follow a particular pattern (Moran's Index: 0.141, P-value = 0.126). The highest standardized incidence rates of in-hospital mortality from MI in 100,000 population were observed in Ardebil (31), North Khorasan (23.7), Yazd (20.2), West Azerbaijan (19.1) and Khuzestan (18.4). The lowest incidence rates were found in Sistan-Baluchestan and Khorasan provinces. Conclusion: This study supports the hypothesis of random pattern of mortality due to myocardial infarction in Iran