Epidemiology and Health

Original Articles

Temporal trend and spatial distribution of acute lymphoblastic leukemia in Iranian children during 2006-2014: a mixed ecological study: Sajjad Rahimi Pordanjani, Amir Kavousi, Babak Mirbagheri, Abbas Shahsavani, Koorosh Etemad; Epidemiol Health. 2020;42:e2020057. Published online July 29, 2020; DOI: https://doi.org/10.4178/epih.e2020057

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Abstract

OBJECTIVES
The present study investigated the spatiotemporal epidemiological status of acute lymphoblastic leukemia (ALL), the most common childhood cancer, in Iran.

METHODS

Using an exploratory mixed design, this ecological study examined 3,769 under-15 children with ALL recorded in the National Cancer Registry of Iran during 2006-2014. Data were analyzed using the Mann-Whitney U test, the Getis-Ord general G (GOGG) index, optimized hot spot analysis, and Pearson correlation coefficients (PCC) at a significance level of 0.05.

RESULTS

The average annual incidence of the disease was 2.25 per 100,000 under-15 children, and the cumulative incidence rate (CIR) was 21.31 per 100,000 under-15 children. Patients’ mean age was 5.90 years (standard deviation, 3.68), and the peak incidence was observed among 2-year to 5-year-olds. No significant difference was found in mean age between boys and girls (p=0.261). The incidence of ALL was more common during spring and summer than in other seasons. The GOGG index was 0.039 and significant (p<0.001). Hot spots were identified in south, central, and eastern Iran and cold spots in the north and west of Iran. The PCC between the CIR and latitude was negative (r=-0.507; p=0.003) but that between the CIR and longitude was positive (r=0.347; p=0.055).

CONCLUSIONS

The incidence of ALL in Iranian children was lower than that observed in developed countries, but showed an increasing trend. It can be argued that the incidence of ALL is due to synergistic interactions between environmental, infectious, geographical, and genetic risk factors.

Summary

Citations

Citations to this article as recorded by

Epidemiology of childhood acute leukemias in marginalized populations of the central-south region of Mexico: results from a population-based registry
Janet Flores-Lujano, Aldo Allende-López, David Aldebarán Duarte-Rodríguez, Erika Alarcón-Ruiz, Lizbeth López-Carrillo, Teresa Shamah-Levy, Mariano E. Cebrián, Ma. del Rocío Baños-Lara, Diana Casique-Aguirre, Jesús Elizarrarás-Rivas, Javier Antonio López-A
Frontiers in Oncology.2024;[Epub] CrossRef
Spatio-temporal Analysis of COVID-19: A Global Study
Sajjad Rahimi Pordanjani, Maryam Mohammadian, Somayeh Derakhshan, Fatemeh Hadavandsiri, Seyed Saeed Hashemi Nazari, Mohammad Hossein Panahi
Middle East Journal of Rehabilitation and Health Studies.2023;[Epub] CrossRef
Persistently high incidence rates of childhood acute leukemias from 2010 to 2017 in Mexico City: A population study from the MIGICCL
Janet Flores-Lujano, David Aldebarán Duarte-Rodríguez, Elva Jiménez-Hernández, Jorge Alfonso Martín-Trejo, Aldo Allende-López, José Gabriel Peñaloza-González, María Luisa Pérez-Saldivar, Aurora Medina-Sanson, José Refugio Torres-Nava, Karina Anastacia Sol
Frontiers in Public Health.2022;[Epub] CrossRef
Epidemiological characteristics and temporal-spatial analysis of overseas imported dengue fever cases in outbreak provinces of China, 2005–2019
Xinchang Lun, Yiguan Wang, Chunchun Zhao, Haixia Wu, Caiying Zhu, Delong Ma, Mingfang Xu, Jun Wang, Qiyong Liu, Lei Xu, Fengxia Meng
Infectious Diseases of Poverty.2022;[Epub] CrossRef
Temporal Trend and Spatial Distribution of Drug Poisoning in Semnan Province: A Retrospective Longitudinal Study
Masoudeh Babakhanian, Khadijeh Mamashli, Faezeh Ansariniya, Somayeh Rezaie, Hamed Azadi, Masumeh Ghazanfarpour, Sajjad Rahimi Pordanjani
Middle East Journal of Rehabilitation and Health Studies.2022;[Epub] CrossRef
Crude incidence, age-specific incidence, and standardized incidence rates of leukemia in children under 14 years of age in Iran: an updated meta-analysis
Ayda Hasanpour Dehkordi, Hasan Askarpour, Farshid Karami Pordanjani, Mohammad Rafiee, Sajjad Rahimi Pordanjani
Przeglad Epidemiologiczny.2022; 75(4): 546. CrossRef

Geographical distribution of at fault drivers involved in fatal traffic collisions in Tehran, Iran: Amir Kavousi, Ali Moradi, Khaled Rahmani, Salahdin Zeini, Pegah Ameri; Epidemiol Health. 2020;42:e2020002. Published online January 13, 2020; DOI: https://doi.org/10.4178/epih.e2020002

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Abstract PDF

Abstract

OBJECTIVES
According to Traffic Police, about 35% of deaths and more than 50% of injuries caused by traffic collision in the roads of Tehran are among drivers and car occupants. This study was conducted to determine areas with the highest number of traffic collisions and perform spatial analysis of traffic collisions involving drivers in Tehran during April 2014 to March 2017.

METHODS

The present study was a cross-sectional and descriptive-analytic research. In this study, all traffic collision that driver was accounted (100 percent or less) for crash occurrence which resulted in the death of at least one person (driver, pedestrian or passenger) were included in the analyses. Geographic information system software was used to show spatial distribution of events from zoning maps. Moran index was used in the mathematical analysis in order to determine the distribution pattern of the events from and Getis-Ord G statistics was applied to analyze the hot spots (high risk points).

RESULTS

A total number of 519 traffic collisions were investigated in this study. Moreover, 283 cases (54.5%) of the incidents took place in direct routes and 236 cases (45.5%) occurred at intersections. The most frequent events were in the region 4 (57 cases) and the least frequent events were reported in the region 10 (6 cases). Moran statistics show that the distribution of the studied events significantly follows the cluster pattern (p<0.001).

CONCLUSIONS

The northeastern and northwest margins of Tehran are the most prone areas for drivers involved with traffic collisions leading to death. Most traffic collisions leading to death take place at highways located at the entrance and exit points of Tehran and highways in regions 2 and 5.

Summary

Citations

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Road Accident Hotspots on Jordan’s Highway Based on Geometric Designs Using Structural Equation Modeling
Shatha Aser Aldala’in, Nur Sabahiah Abdul Sukor, Mohammed Taleb Obaidat, Teh Sabariah Binti Abd Manan
Applied Sciences.2023; 13(14): 8095. CrossRef
GIS-based risk mapping of cutaneous leishmaniasis: a survey in an endemic area of Central Iran
Mohammad Reza Maracy, Fariba Jaffary, Afshin Ebrahimi, Fatemeh Sokhanvari, Asieh Heidari, Hanieh Sharifian-Koupaiee, Reza Fadaei, Javad Ramazanpour, Malihe Moazeni
Environmental Science and Pollution Research.2021; 28(41): 57470. CrossRef
Identifying and prioritizing risk factors involved in motorcyclists' traffic accidents in Tehran
Ali Moradi, Amir Kavousi, Pegah Ameri, Mohyeddin Amjadian, MohammadHossein Vaziri
Archives of Trauma Research.2021; 10(3): 153. CrossRef

Spatial inequalities and predictors of HIV/AIDS mortality risk in Hamadan, Iran: a retrospective cohort study: Somayeh Momenyan, Amir Kavousi, Jalal Poorolajal, Narges Momenyan; Epidemiol Health. 2018;40:e2018038. Published online August 5, 2018; DOI: https://doi.org/10.4178/epih.e2018038

11,191 View
212 Download
5 Web of Science
5 Crossref

Abstract PDF

Abstract

OBJECTIVES
Understanding the geographic variation of HIV/AIDS mortality risk and human immunodeficiency virus (HIV) infection could help identify high-burden areas. The aim of our study was to evaluate the effects of predictors of the time interval between HIV diagnosis to death, while accounting for spatial correlations across counties, and to assess patterns of spatial inequalities in the risk of HIV/AIDS mortality in Hamadan Province, Iran.

METHODS

This retrospective study was conducted on 585 patients. The outcome in this study was the time period between the date of HIV/AIDS diagnosis and the date of death. A Weibull regression model with spatial random effects was used.

RESULTS

According to multivariate analysis, there were significant associations between age, tuberculosis co-infection, and marital status and the risk of death. In terms of spatial inequalities, a cluster of counties was identified with a somewhat higher death hazard in the north, northwest, northeast, and central regions. Additionally, a cluster with a somewhat lower hazard was identified in the south, southwest, southeast, and west regions.

CONCLUSIONS

The spatial pattern of HIV/AIDS death risk could reflect inequalities in access to antiretroviral therapy and public health services. Our results underscore the importance of attention to vulnerable groups in urban areas.

Summary

Citations

Citations to this article as recorded by

Prevalence, Antibiotic Susceptibility Pattern, and Associated Factors of Enteric Bacterial Pathogens Among HIV Infected Patients with Diarrhea Attending the ART Clinic of Dilla University Referral Hospital, Southern Ethiopia
Asaye Mitiku, Zerihin Solomon, Berhanu Gidisa, Kasie Gebeyhu, Haymanot Tewabe, Demissew Shenkute, Melkayehu Kassa, Addisu Gize
Infection and Drug Resistance.2023; Volume 16: 4227. CrossRef
Análise da tendência da mortalidade por doenças definidoras e não definidoras de HIV/aids segundo características sociodemográficas, por Unidade da Federação e Brasil, 2000-2018
Ana Paula da Cunha, Marly Marques da Cruz
Epidemiologia e Serviços de Saúde.2022;[Epub] CrossRef
Spatial variability of mother-to-child human immunodeficiency virus transmission in a province in the Brazilian Rainforest: An ecological study
Marcus Matheus Quadros Santos, Bianca Alessandra Gomes do Carmo, Taymara Barbosa Rodrigues, Bruna Rafaela Leite Dias, Cleyton Abreu Martins, Glenda Roberta Oliveira Naiff Ferreira, Andressa Tavares Parente, Cíntia Yollete Urbano Pauxis Aben-Atha, Sand
Geospatial Health.2022;[Epub] CrossRef
Clinical, health systems and neighbourhood determinants of tuberculosis case fatality in urban Blantyre, Malawi: a multilevel epidemiological analysis of enhanced surveillance data
McEwen Khundi, Peter MacPherson, Helena R. A. Feasey, Rebeca Nzawa Soko, Marriott Nliwasa, Elizabeth L. Corbett, James R. Carpenter
Epidemiology and Infection.2021;[Epub] CrossRef
Spatial and temporal analysis of the human immunodeficiency virus in an area of social vulnerability in Northeast Brazil
Géssyca Cavalcante de Melo, Emilia Carolle Azevedo de Oliveira, Iane Brito Leal, Carolina Piedade Morais de Freitas Soares Silva, Roberta Andrade Beltrão, Allan Dantas dos Santos, Renata Karina Reis, Marco Antônio Prado Nunes, Karina Conceição Gomes Macha
Geospatial Health.2020;[Epub] CrossRef

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