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Arch Iran Med. 2015;18(10):0-0.
PMID: 26443245
Scopus id: 84943565048
  Abstract View: 523
  PDF Download: 529

Original Article

Equity Chasm in Megacities: Five Leading Causes of Death in Tehran

Kimiya Gohari, Mahboubeh Parsaeian, Ali Sheidaei, Shadi Rahimzadeh, Ahmad Reza Baghestani, Mohamad Amin Pourhoseingholi, Forough Pazhuheian, Sahar Saeedi Moghaddam, Anita Mansouri, Shohreh Naderimagham, Amir Kavousi * , Farshad Farzadfar *

Abstract

BACKGROUND: Inequity in megacities is a real concern in public health perspective. Tehran is a megacity with more than 8 million population that is divided into 22 regions (counties) with considerable diversity in socioeconomic status. On the other hand, spatial cluster detection is an important tool in disease surveillance to identify areas of elevated risk and to generate hypotheses about disease or mortality etiology. The present research aims to identify high or low-risk clusters for five non-communicable leading causes of death in 22 regions of Tehran province.
METHODS: Cause-specific mortality rates were extracted from Behesht-e-Zahra registry system for Tehran province in 2011. Spatial scan statistic as a most common method in spatial cluster detection was chosen to detect clusters with elevated risk of death. Given the observed and expected number death in each region, a log likelihood ratio (LLR) criterion was used to test whether a cluster is significant.
RESULT: Two high-risk and two low-risk clusters were detected for each cause of death. All these clusters were statistically significant with p-value less than 0.05. Mapping these clusters shows substantial differences between regions in Tehran. For mortality due to ischemic heart diseases, cerebrovascular diseases, hypertensive diseases, respiratory diseases, and stomach cancer, the high-risk clusters concentrated in southern half of Tehran and low-risk clusters were in northern half of Tehran. In the most situations, regions 2, 3 and 5 seemed to have lower rate of death comparing with other regions. On the other hand, regions, 16, 19 and 20 were in the high rate clusters.
CONCLUSION: There was substantial disparity between regions of Tehran for five non-communicable causes of death studied in this article. Identifying factors affecting the observed differences is useful to set effective preventive interventions and can be investigated in future researches.
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