Spatial Analysis of COVID-۱۹ and Exploration of Its Environmental and Socio-Demographic Risk Factors Using Spatial Statistical Methods: A Case Study of Iran
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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JR_HDQ-5-3_005
تاریخ نمایه سازی: 27 آذر 1402
Abstract:
Background: Iran detected its first COVID-۱۹ case in February ۲۰۲۰ in Qom province, which rapidly spread to other cities in the country. Iran, as one of those countries with the highest number of infected people, has officially reported ۱۸۱۲ deaths from a total number of ۲۳۰۴۹ confirmed infected cases that we used in the analysis.
Materials and Methods: Geographic distribution by the map of calculated incidence rates for COVID -۱۹ in Iran within the period was prepared by GIS ۱۰.۶ Spatial autocorrelation (Global Moran’s I) and hot spot analysis were used to assess COVID -۱۹ spatial patterns. The ordinary least square method was used to estimate the relationship between COVID -۱۹ and the risk factors. The next step was to explore Geographically Weighted Regression (GWR) models that might better explain the variation in COVID -۱۹ cases based on the environmental and socio-demographic factors.
Results: The spatial autocorrelation (Global Moran’s I) result showed that COVID-۱۹ cases in the studied area were in clustered patterns. For statistically significant positive z-scores, the larger the z-score is, the more intense the clustering of high values (hot spot), such as Semnan, Qom, Isfahan, Mazandaran, Alborz, and Tehran. Hot spot analysis detected clustering of a hot spot with confidence level ۹۹% for Semnan, Qom, Isfahan, Mazandaran, Alborz, and Tehran, as well. The risk factors were removed from the model step by step. Finally, just the distance from the epicenter was adopted in the model. GWR efforts increased the explanatory value of risk factor with better special precision (adjusted R-squared=۰.۴۴)
Conclusion: The highest CIR was concentrated around Qom. Also, the greater the distance from the center of prevalence (Qom), the fewer the patients. Hot spot analysis also implies that the neighboring provinces of prevalence centers exhibited hot spots with a ۹۹% confidence level. Furthermore, the results of OLS analysis showed the significant correlation of CIR is with the distance from epicenter (Qom). The GWR can result in the spatial granularity providing an opportunity to well understand the relationship between environmental spatial heterogeneity and COVID-۱۹ risk as entailed by the infection of CIR with COVID-۱۹, which would make it possible to better plan managerial policies for public health.
Authors
Mohsen Shariati
Department of Environmental Planning, College of Engineering, Faculty of Environment, Management and Education, University of Tehran, Tehran, Iran.
Mahsa Jahangiri-rad
Department of Environmental Hygiene, School of Health and Medical Engineering and Psychology, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
Fatima Mahmud Muhammad
Department of Epidemiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Jafar Shariati
Department of Chemical Engineering, Darab Branch, Islamic Azad University, Darab, Iran.