Ahmed Mater

ORCID: 0000-0001-9478-1132
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About
Contact & Profiles
Research Areas
  • Vaccine Coverage and Hesitancy
  • COVID-19 and Mental Health
  • Emergency and Acute Care Studies
  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Impact on Reproduction
  • Ethics and Legal Issues in Pediatric Healthcare
  • Influenza Virus Research Studies
  • Obesity and Health Practices
  • Respiratory viral infections research
  • Trauma and Emergency Care Studies
  • Suicide and Self-Harm Studies
  • COVID-19 and healthcare impacts
  • Ethics in Clinical Research
  • Long-Term Effects of COVID-19
  • Childhood Cancer Survivors' Quality of Life
  • Sepsis Diagnosis and Treatment
  • Mental Health and Patient Involvement
  • Fungal Infections and Studies
  • COVID-19 epidemiological studies
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Migration, Health and Trauma
  • Child Abuse and Trauma
  • Family Caregiving in Mental Illness
  • Health disparities and outcomes
  • Global Maritime and Colonial Histories

Research Network (United States)
2024

University of Saskatchewan
2020-2024

London Health Sciences Centre
2023

Children’s Health Research Institute
2023

McMaster University
2023

Centre Hospitalier Universitaire Sainte-Justine
2023

Université de Montréal
2023

University of Ottawa
2005-2023

Dalhousie University
2023

Children's Hospital of Eastern Ontario
2005-2023

The coronavirus disease 2019 (COVID-19) pandemic has taken an unprecedented global toll and vaccination is needed to restore healthy living. Timely inclusion of children in trials critical. We surveyed caregivers seeking care 17 Emergency Departments (ED) across 6 countries during the peak identify factors associated with intent participate COVID-19 vaccine trials. Questions about child parent characteristics, expressed concerns parental attitudes toward participation a trial were asked.

10.1080/21645515.2020.1834325 article EN other-oa Human Vaccines & Immunotherapeutics 2020-11-23

Objectives The aim of this study was to quantify the effect COVID-19 pandemic on pediatric emergency department (ED) utilization and outcomes. Methods This is an interrupted-time-series observational children presenting 11 Canadian tertiary-care EDs. Data were grouped into weeks in 3 periods: prepandemic (January 1, 2018–January 27, 2020), peripandemic 28, 2020–March 10, early (March 11, 2020–April 30, 2020). These periods compared with same time intervals 2 preceding calendar years. Primary...

10.1097/pec.0000000000002484 article EN Pediatric Emergency Care 2021-06-02

Vaccines against COVID-19 are likely to be approved for children under 12 years in the near future. Understanding vaccine hesitancy parents is essential reaching herd immunity. A cross-sectional survey of caregivers emergency departments (ED) was undertaken U.S., Canada, and Israel. We compared reported willingness vaccinate with an initial post-adult approval. Multivariable logistic regression models were performed all those <12 years. total 1728 1041 surveys completed phases 1 2,...

10.3390/ijerph181910224 article EN International Journal of Environmental Research and Public Health 2021-09-28

Importance Clinical manifestations of SARS-CoV-2 variants have not been systematically compared in children. Objective To compare symptoms, emergency department (ED) chest radiography, treatments, and outcomes among children with different variants. Design, Setting, Participants This multicenter cohort study was performed at 14 Canadian pediatric EDs. included adolescents younger than 18 years (hereinafter referred to as children) tested for infection an ED between August 4, 2020, February...

10.1001/jamanetworkopen.2023.2328 article EN cc-by-nc-nd JAMA Network Open 2023-03-09
Nadia Roumeliotis Matthew Carwana Ofélie Trudeau Katia Charland Kate Zinszer and 95 more Mike Benigeri Mamadou Diop Jesse Papenburg Samina Ali Maryna Yaskina Gita Wahi Baudouin Forgeot d’Arc Sylvana M. Côté Manish Sadarangani Nicole E. Basta Patrícia S. Fontela Soren Gantt Terry P. Klassen Caroline Quach Quynh Doan Sarah Ahira Upton Allen Krista Baerg Megan Bale-Nick Ananya Banerjee Michelle Barton Darcy Beer Simon Berthelot Julie A. Bettinger Maala Bhatt Melanie Buba Francine Buchanan Jared Bullard Brett Burstein Catherine Burton Rahul Chanchlani Michaël Chassé Karen Choong Evelyn Constantin C. A. Constantinescu Carrie Costello Tammie Dewan Tanya Di Genova Olivier Drouin Karen Dryden‐Palmer Geneviève Du Pont- Thibodeau Marc-André Dugas Raven Dumont-Maurice Guillaume Émériaud Jason G. Emsley Mark A. Ferro Karen Forbes Isabel Fortier Jennifer Foster Jessica Foulds Stephen B. Freedman Gabrielle Freire Eleni Galanis P. Grantley Gill Jocelyn Gravel Emily Gruenwoldt Gonzalo Garcia Guerra Astrid Guttman Betty Jean Hancock Robyn Harrison Joanna Holland Ari R. Joffe Fatima Kakkar April Kam James D. Kellner Lisa Knisley Thierry Lacaze‐Masmonteil Saptharishi Lalgudi Ganesan Marc- André Langlois Nicole Le Saux Laurie Lee Kirk Leifso Patricia Li Andrea Linares Sanjay Mahant Isabelle Marc Ahmed Mater James McNally Garth Meckler Shaun Morris Haifa Mtaweh Srinivas Murthy Fiona Muttalib Leigh Anne Newhook Jessica Nicoll Nathalie Orr-Gaucher Joseph S. Pagano Anna Pangilinan Jeffrey M. Pernica Naveen Poonai Élodie Portales-Casamar Robert Porter Rupeena Purewal Paula Robeson Joan Robinson

Importance The COVID-19 pandemic resulted in multiple socially restrictive public health measures and reported negative mental impacts youths. Few studies have evaluated incidence rates by sex, region, social determinants across an entire population. Objective To estimate the of hospitalizations for conditions, stratified determinants, children adolescents (hereinafter referred to as youths ) young adults comparing prepandemic pandemic-prevalent periods. Design, Setting, Participants This...

10.1001/jamanetworkopen.2024.22833 article EN cc-by-nc-nd JAMA Network Open 2024-07-08

To determine if caregivers of children presenting to pediatric emergency departments (EDs) during the COVID-19 pandemic are delaying care for fear contracting COVID-19. This was a pre-planned secondary analysis cross-sectional survey study accompanying their aged 0–19 years 16 EDs in 5 countries from May June 2020. An anonymous online survey, completed by via RedCAP, included caregiver and child demographics, complaints, they delayed presentation whether symptoms worsened this interval, as...

10.1007/s43678-021-00174-z article EN other-oa Canadian Journal of Emergency Medicine 2021-08-16

The COVID-19 pandemic had profound effects on the mental wellbeing of adolescents. We sought to evaluate pandemic-related changes in health care use for suicidal ideation, self-poisoning and self-harm. obtained data from Canadian Institute Health Information emergency department visits hospital admissions April 2015 March 2022 among adolescents aged 10-18 years Canada. calculated quarterly percentage a composite outcome comprising self-harm relative all-cause admissions. used interrupted...

10.1503/cmaj.220507 article EN cc-by-nc-nd Canadian Medical Association Journal 2023-09-17

Abstract Background/aims Despite evidence that preferential use of balanced/buffered fluids may improve outcomes compared with chloride-rich 0.9% saline, saline remains the most commonly used fluid for children septic shock. We aim to determine if resuscitation as part usual care will outcomes, in through reduced kidney injury and without an increase adverse effects, Methods The Pragmatic Pediatric Trial Balanced versus Normal Saline Fluid Sepsis (PRoMPT BOLUS) study is international,...

10.1186/s13063-021-05717-4 article EN cc-by Trials 2021-11-06
Nadia Roumeliotis Matthew Carwana Katia Charland Ofélie Trudeau Mike Benigeri and 95 more Mamadou Diop Holly Agostino Kate Zinszer Isra Amsdr Baudouin Forgeot d’Arc Sylvana M. Côté Nicole E. Basta Patrícia S. Fontela Soren Gantt Terry P. Klassen Caroline Quach Quynh Doan Sarah Ahira Samina Ali Upton Allen Krista Baerg Megan Bale-Nick Ananya Banerjee Michelle Barton Darcy Beer Simon Berthelot Julie A. Bettinger Maala Bhatt Melanie Buba Francine Buchanan Jared Bullard Brett Burstein Catherine Burton Rahul Chanchlani Michaël Chassé Karen Choong Evelyn Constantin C. A. Constantinescu Carrie Costello Sylvana M. Côté Tammie Dewan Tanya Di Genova Olivier Drouin Karen Dryden‐Palmer Geneviève Du Pont- Thibodeau Marc-André Dugas Raven Dumont-Maurice Guillaume Émériaud Jason G. Emsley Mark A. Ferro Karen Forbes Isabel Fortier Jennifer Foster Jessica Foulds Stephen B. Freedman Gabrielle Freire Eleni Galanis P. Grantley Gill Jocelyn Gravel Emily Gruenwoldt Gonzalo Garcia Guerra Astrid Guttman Betty Jean Hancock Robyn Harrison Joanna Holland Ari R. Joffe Fatima Kakkar April Kam James D. Kellner Lisa Knisley Thierry Lacaze‐Masmonteil Saptharishi Lalgudi Ganesan Marc- André Langlois Nicole Le Saux Laurie Lee Kirk Leifso Patricia Li Andrea Linares Sanjay Mahant Isabelle Marc Ahmed Mater James McNally Garth Meckler Shaun Morris Haifa Mtaweh Srinivas Murthy Fiona Muttalib Leigh Anne Newhook Jessica Nicoll Nathalie Orr-Gaucher Joseph S. Pagano Anna Pangilinan Jesse Papenburg Jeffrey M. Pernica Naveen Poonai Élodie Portales-Casamar Robert Porter Rupeena Purewal Paula Robeson Joan Robinson

Hospitalizations for eating disorders rose dramatically during the COVID-19 pandemic. Public health restrictions, or stringency, are believed to have played a role in exacerbating disorders. Few studies of pandemic extended period when public stringency restrictions were lifted.

10.1001/jamapediatrics.2024.2044 article EN JAMA Pediatrics 2024-07-08
Eva Alisic Claire Hoysted Nancy Kassam‐Adams Markus A. Landolt Sarah Curtis and 95 more Anupam B. Kharbanda Mark D Lyttle Niccoló Parri Rachel Stanley Franz E Babl Martin H. Osmond Amy C. Plint Stephen B. Freedman David Johnson Diana Murray Sarah Williamson-Urquhart Janet Curran Andrew Dixon Garth Meckler Liza Bialy Quynh Doan Antonia Stang Andrew Dixon Ahmed Mater Darcy Beer Gary Joubert Anthony Crocco Adrienne L. Davis Andrea Moore Waleed Alqurashi S.A. Dubrovsky Evelyne D Trottier Mathieu Blanchet Katrina Hurley Robert D. Porter Marc Auerbach Todd P. Chang Andrea T. Cruz Charles G. Macias Todd A. Florin Anupam B. Kharbanda Prashant Mahajan Rakesh D. Mistry David Schnadower Rachel Stanley Lise E. Nigrovic Kenneth A. Michelson Joe Zorc Mark D Lyttle Ian Maconochie Stuart Hartshorn Steven Foster Cath Bevan Ronan O’Sullivan Mark Mitchelson Julie‐Ann Maney Stuart Hartshorn Cath Bevan Sarah Potter Paul A. Younge Colin Powell Ronan O’Sullivan Gisela Robinson Carol Blackburn Turlough Bolger Róisín McNamara Paul Leonard Adam Reuben V. Choudhery Joanne Mulligan Roger Alcock Ffion Davies Bimal Mehta Ami Parikh James Ross John Criddle Emer Sutherland T Sajjanhar Shye Wong J. Thiagarajan Ian Maconochie Andrew Rowland K. Potier Clare Dieppe Lucy Thomas J. H. B. Smith Chris Vorwerk Kate Lenton Derek Burke Jason M Barling Niall Mullen Kirsty Dickson-Jardine Santiago Mintegui Raso Borja Gómez Liviana Da Dalt Alain Gervaix Ian Maconochie Henriëtte A. Moll Yehezkel Waisman Niccoló Parri

10.1016/j.jpeds.2015.10.067 article EN The Journal of Pediatrics 2015-12-18

Vaccinating children against COVID-19 is critical as a public health strategy in order to reach herd immunity and prevent illness among adults. The aim of the study was identify correlation between willingness vaccinate under 12 years old, vaccination rate for adult population Canada, United States, Israel. This secondary analysis cross-sectional survey (COVID-19 Parental Attitude Study) parents younger presenting pediatric emergency departments (EDs). reports when vaccines will be approved...

10.1080/21645515.2021.1999144 article EN other-oa Human Vaccines & Immunotherapeutics 2021-11-19

Weight and height of adolescents in Bahrain (15.5-19.5 years) was measured to evaluate their growth patterns. A cross-sectional survey done on 825 students that represented 5% total secondary students. The results showed median weight Bahraini were below the 50th percentiles Western standard. However, when compared with earlier surveys Bahrain, pattern has improved. This is because improvement health environment.

10.1177/146642409011000510 article EN Journal of the Royal Society of Health 1990-10-01

A 4-year-old boy was admitted to hospital with a diagnosis of pre–B-cell acute lymphoblastic leukemia. Ten days later, he experienced fever, neutropenia and lesion on the lateral aspect his left arm just above elbow. The purplish 1 cm in diameter not painful. child

10.1503/cmaj.1041231 article EN cc-by-nc-nd Canadian Medical Association Journal 2005-01-31

Introduction Patient engagement in healthcare research is a necessity to ensure that objectives align with priorities, outcomes and needs of the population under study, facilitate ease implementation adoption findings. In clinical trials, there an increasing focus on patient during planning conduct trials due potential for ethical methodological benefits. As increases, need evaluate approaches these activities contribute evidence what most appropriate successful. The purpose this study...

10.1136/bmjopen-2021-059689 article EN cc-by-nc BMJ Open 2022-06-01

Paediatric research is essential to acquire effective diagnoses and treatment for children, but it has historically been under-prioritized. The PRIMED study aimed characterize the bio-profiles of children with appendicitis investigate their use as a clinical prediction tool. We evaluated capacity several Canadian paediatric emergency departments (EDs) described both challenges experienced in implementation strategies which were used improve local capacity. Eleven EDs across Canada provided...

10.1093/pch/pxae023 article EN cc-by-nc-nd Paediatrics & Child Health 2024-07-24

The aim of this study is to evaluate the knowledge and attitudes Bahraini secondary students towards obesity. A multistage stratified sampling procedure was used select 742 adolescents aged 14 19 years. findings revealed that toward causes complications obesity quite sufficient. However, were more likely believe many food fads related reducing weight. Lack physical excercise, excessive intake heredity main reasons given by for Girls depend on television (71—3%) newspapers magazine (55—6%) as...

10.1111/j.1470-6431.1991.tb00671.x article EN Journal Of Consumer Studies and Home Economics 1991-12-01
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