Samar Al-Hajj

Dr. Samar Al-Hajj

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
4 June 2021 in Frontiers in Public Health
Verified
Journal Article
Open access
PDF file
SASamar Al-Hajj
Samar Al-Hajj
HDHassan R. Dhaini
Hassan R. Dhaini
Stefania MondelloStefania Mondello
Stefania Mondello
HKHaytham Kaafarani
Haytham Kaafarani
Firas KobeissyFiras Kobeissy
Firas Kobeissy
Ralph DepalmaRalph Depalma
Ralph Depalma
A massive chemical detonation occurred on August 4, 2020 in the Port of Beirut, Lebanon. An uncontrolled fire in an adjacent warehouse ignited ~2,750 tons of Ammonium Nitrate (AN), producing one of the most devastating blasts in recent history. The blast supersonic pressure and heat wave claimed the lives of 220 people and injured more than 6,500 instantaneously, with severe damage to the nearby dense residential and commercial areas. This review represents one of the in-depth reports to provide a detailed analysis of the Beirut blast and its health and environmental implications. It further reviews prior AN incidents and suggests actionable recommendations and strategies to optimize chemical safety measures, improve emergency preparedness, and mitigate the delayed clinical effects of blast and toxic gas exposures. These recommended actionable steps offer a starting point for government officials and policymakers to build frameworks, adopt regulations, and implement chemical safety protocols to ensure safe storage of hazardous materials as well as reorganizing healthcare system disaster preparedness to improve emergency preparedness in response to similar large-scale disasters and promote population safety. Future clinical efforts should involve detailed assessment of physical injuries sustained by blast victims, with systemic mitigation and possible treatment of late blast effects involving individuals, communities and the region at large.

Ali J. GHANDOURAli J. GHANDOUR
Ali J. GHANDOUR
HHHuda Hammoud
Huda Hammoud
SASamar Al-Hajj
Samar Al-Hajj
Road traffic injury accounts for a substantial human and economic burden globally. Understanding risk factors contributing to fatal injuries is of paramount importance. In this study, we proposed a model that adopts a hybrid ensemble machine learning classifier structured from sequential minimal optimization and decision trees to identify risk factors contributing to fatal road injuries. The model was constructed, trained, tested, and validated using the Lebanese Road Accidents Platform (LRAP) database of 8482 road crash incidents, with fatality occurrence as the outcome variable. A sensitivity analysis was conducted to examine the influence of multiple factors on fatality occurrence. Seven out of the nine selected independent variables were significantly associated with fatality occurrence, namely, crash type, injury severity, spatial cluster-ID, and crash time (hour). Evidence gained from the model data analysis will be adopted by policymakers and key stakeholders to gain insights into major contributing factors associated with fatal road crashes and to translate knowledge into safety programs and enhanced road policies.

3 April 2020 in BMC Public Health
Verified
Journal Article
Open access
PDF file
SASamar Al-Hajj
Samar Al-Hajj
CBCharbel El Bcheraoui
Charbel El Bcheraoui
FDFarah Daoud
Farah Daoud
IKIbrahim Khalil
Ibrahim Khalil
MMMaziar Moradi-Lakeh
Maziar Moradi-Lakeh
AMAli Mokdad
Ali Mokdad
Background: Child and adolescent injury is one of the leading causes of child death globally with a large proportion occurring in Low- and Middle-Income Countries (LMICs). Similarly, the Eastern Mediterranean Region (EMR) countries borne a heavy burden that largely impact child and adolescent safety and health in the region. We aim to assess child and adolescent injury morbidity and mortality and estimate its burden in the Eastern Mediterranean Region based on findings from the Global Burden of Disease (GBD), Injuries and Risk Factors study 2017.Methods: Data from the Global Burden of Disease GBD 2017 were used to estimate injury mortality for children aged 0–19, Years of Life Lost (YLLs), Years lived with Disability (YLDs) and Disability Adjusted Life Years (DALYs) by age and sex from 1990 to 2017.Results: In 2017, an estimated 133,117 (95% UI 122,587-143,361) children died in EMR compared to 707,755 (95% UI 674401.6–738,166.6) globally. The highest rate of injury deaths was reported in Syria at 183.7 (95% UI 181.8–185.7) per 100,000 population. The leading cause of injury deaths was self-harm and interpersonal violence followed by transport injury. The primary cause of injury DALYs in EMR in 2017 was self-harm and interpersonal violence with a rate of 1272.95 (95% UI 1228.9 – 1319.2) almost 3-times the global rate.Conclusion: Almost 19% of global child injury related deaths occur in the EMR. Concerted efforts should be integrated to inform policies and adopt injury preventive strategies to reduce injury burden and promote child and adolescent health and well-being in EMR countries.

1 December 2020 in International Journal of Disaster Risk Reduction
Verified
Journal Article
Closed access
SASamar Al-Hajj
Samar Al-Hajj
HAHadi Abou-El-Hassan
Hadi Abou-El-Hassan
LKLana Khalil
Lana Khalil
HKHaytham Ma. Kaafarani
Haytham Ma. Kaafarani
MSMazen El Sayed
Mazen El Sayed

10 February 2021 in Neuroepidemiology
Verified
Journal Article
Closed access
PDF file
SASamar Al-Hajj
Samar Al-Hajj
ZHZeinab Hammoud
Zeinab Hammoud
JCJure Colnaric
Jure Colnaric
MAMaya Ataya
Maya Ataya
MMMarie Michele Macaron
Marie Michele Macaron
TGthe TBI Working Group
the TBI Working Group
Objectives: Traumatic brain injury (TBI) represents a major health concern worldwide with a large impact in the Middle East and North Africa (MENA) region as a consequence of protracted wars and conflicts that adversely affect the general population. Currently, systematic TBI studies in the MENA region are lacking, nonetheless they are immensely needed to enhance trauma management and increase survival rates among TBI patients. This systematic review aims to characterize TBI in the MENA region to guide future policy choices and research efforts and inform tailored guidelines capable of improving TBI management and patient treatment and outcome. Furthermore, it will serve as a road map to evaluate and assess knowledge of trauma impact on regional health systems that can be adopted by health-care providers to raise awareness and improve trauma care. Methods: We conducted a comprehensive search strategy of several databases including MEDLINE/Ovid, PubMed, Embase, Scopus, CINAHL, Google Scholar, and the grey literature in accordance with the PROSPERO systematic review protocol CRD42017058952. Abstracts were screened, and selected eligible studies were reviewed independently by 2 reviewers. We collected demographics information along with TBI characteristics, mortality rates, and regional distribution. Data were extracted using REDCap and checked for accuracy. Results: The search strategy yielded 23,385 citations; 147 studies met the eligibility criteria and were included in this review. Motor vehicle accident (MVA) was the leading cause of TBI (41%) in the MENA region, followed by the military- (15.6%) and fall- (8.8%) related TBI. Males predominantly suffer from TBI-related injuries (85%), with a high prevalence of MVA- and military-related TBI injuries. The TBI mortality rate was 12.9%. The leading causes of mortality were MVA (68%), military (20.5%), and assault (2.9%). The vast majority of reported TBI severity was mild (63.1%) compared to moderate (10.7%) and severe TBI (20.2%). Patients mainly underwent a Glasgow Coma Scale assessment (22.1%), followed by computed tomography scan (8.9%) and surgery (4.1%). Conclusions: Despite its clinical, social, and economic burden, the evidence of TBI research in the MENA region is scarce. Further research and high-quality epidemiological studies are urgently needed to gain a deep understanding of the TBI burden in the region, facilitate the allocation of adequate resources, implement effective preventive and intervention strategies and advise on the TBI patient management as reflective on the TBI patterns and modes.

12 April 2020 in Journal of Public Health
Verified
Journal Article
Closed access
SASamar Al-Hajj
Samar Al-Hajj
CPColleen Pawliuk
Colleen Pawliuk
JSJennifer Smith
Jennifer Smith
AZAlex Zheng
Alex Zheng
IPIan Pike
Ian Pike
Background: Lebanon, an Eastern Mediterranean country, suffers a large burden of injury as a consequence of conflict and war, political instability, and the lack of policies and safety regulations. This article aims to systematically map and comprehensively describe the injury research literature in Lebanon and, to identify gaps for future research. Methods: MEDLINE, Embase, Eric and SafetyLit, and the grey literature, including conference proceedings, theses and dissertations, government and media reports, were searched without any date or language limits. Data were extracted from 467 documents using REDCap. Results: War-related injuries were the most prevalent type of injury in Lebanon, followed by homicide and other forms of violence. While existing literature targeted vulnerable and at-risk populations, the vast majority focused solely on reporting the prevalence of injuries and associated risk factors. There are considerable gaps in the literature dealing with the integration of preventive programs and interventions across all populations. Conclusions: Lebanon, historically and currently, experiences a high number of injuries from many different external causes. To date, efforts have focused on reporting the prevalence of injuries and making recommendations, rather than implementing and evaluating interventions and programs to inform policies. Future injury related work should prioritize interventions and prevention programs.