OOIR: Observatory of International Research

Papers

(The TQCC of Canadian Medical Association Journal is 2. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-04-01 to 2024-04-01.)

Article	Citations
Obesity in adults: a clinical practice guideline	576
The impact of COVID-19 on pregnancy outcomes: a systematic review and meta-analysis	468
Development of the Instrument to assess the Credibility of Effect Modification Analyses (ICEMAN) in randomized controlled trials and meta-analyses	269
Mathematical modelling of COVID-19 transmission and mitigation strategies in the population of Ontario, Canada	266
Probable congenital SARS-CoV-2 infection in a neonate born to a woman with active SARS-CoV-2 infection	244
Shifts in office and virtual primary care during the early COVID-19 pandemic in Ontario, Canada	241
Evaluation of the relative virulence of novel SARS-CoV-2 variants: a retrospective cohort study in Ontario, Canada	196
Impact of climate and public health interventions on the COVID-19 pandemic: a prospective cohort study	167
COVID-19 and people experiencing homelessness: challenges and mitigation strategies	154
For-profit long-term care homes and the risk of COVID-19 outbreaks and resident deaths	151
Mitigating the psychological effects of COVID-19 on health care workers	151
Safety considerations with chloroquine, hydroxychloroquine and azithromycin in the management of SARS-CoV-2 infection	149
Efficacy and safety of corticosteroids in COVID-19 based on evidence for COVID-19, other coronavirus infections, influenza, community-acquired pneumonia and acute respiratory distress syndrome: a syst	142
Projected estimates of cancer in Canada in 2022	113
Open access epidemiologic data and an interactive dashboard to monitor the COVID-19 outbreak in Canada	112
Alpha, Beta, Delta, Gamma: What’s important to know about SARS-CoV-2 variants of concern?	111
Digital contact tracing for COVID-19	109
Projecting demand for critical care beds during COVID-19 outbreaks in Canada	103
Addressing the indirect effects of COVID-19 on the health of children and young people	103
Clearing the surgical backlog caused by COVID-19 in Ontario: a time series modelling study	101
Remdesivir for the treatment of patients in hospital with COVID-19 in Canada: a randomized controlled trial	98
Baseline characteristics and outcomes of patients with COVID-19 admitted to intensive care units in Vancouver, Canada: a case series	93
COVID-19 in long-term care homes in Ontario and British Columbia	91
Anosmia and dysgeusia associated with SARS-CoV-2 infection: an age-matched case–control study	79
Health care practitioners’ responsibility to address intimate partner violence related to the COVID-19 pandemic	78

Medical experimentation and the roots of COVID-19 vaccine hesitancy among Indigenous Peoples in Canada	73
What can countries learn from Hong Kong’s response to the COVID-19 pandemic?	69
Estimation of COVID-19–induced depletion of hospital resources in Ontario, Canada	69
COVID-19 in patients undergoing long-term dialysis in Ontario	63
Lack of COVID-19 transmission on an international flight	63
Characteristics and outcomes of hospital admissions for COVID-19 and influenza in the Toronto area	62
Symptoms associated with a positive result for a swab for SARS-CoV-2 infection among children in Alberta	62
Efficacy and safety of convalescent plasma for severe COVID-19 based on evidence in other severe respiratory viral infections: a systematic review and meta-analysis	60
Implementing machine learning in medicine	59
Time to dismantle systemic anti-Black racism in medicine in Canada	58
Temporal estimates of case-fatality rate for COVID-19 outbreaks in Canada and the United States	58
Individual and social determinants of SARS-CoV-2 testing and positivity in Ontario, Canada: a population-wide study	55
Efficacy and safety of antiviral treatment for COVID-19 from evidence in studies of SARS-CoV-2 and other acute viral infections: a systematic review and meta-analysis	55
Coagulopathy associated with COVID-19	55
SARS-CoV-2 (COVID-19) serology: implications for clinical practice, laboratory medicine and public health	54
Advancing gender equity in medicine	54
A safer drug supply: a pragmatic and ethical response to the overdose crisis	52
Use of sodium–glucose cotransporter-2 inhibitors and risk of acute kidney injury in older adults with diabetes: a population-based cohort study	50
Holder pasteurization of donated human milk is effective in inactivating SARS-CoV-2	50
The case for relaxing no-visitor policies in hospitals during the ongoing COVID-19 pandemic	50
The efficacy and safety of sunscreen use for the prevention of skin cancer	48
The influence of sex and gender domains on COVID-19 cases and mortality	48
Asthma and COVID-19	47
Death, discharge and arrhythmias among patients with COVID-19 and cardiac injury	45
Canadian best practice recommendations for the management of amyotrophic lateral sclerosis	44
Infectivity of severe acute respiratory syndrome coronavirus 2 in children compared with adults	43
Relation between surgeon age and postoperative outcomes: a population-based cohort study	42
Diagnosis-wide analysis of COVID-19 complications: an exposure-crossover study	42
Characteristics of children admitted to hospital with acute SARS-CoV-2 infection in Canada in 2020	40
Closing the gender pay gap in Canadian medicine	40
Short-term antibody response after 1 dose of BNT162b2 vaccine in patients receiving hemodialysis	40
Effect of moist heat reprocessing of N95 respirators on SARS-CoV-2 inactivation and respirator function	40
COVID-19 and the decolonization of Indigenous public health	40
Supporting children with autism spectrum disorder in the face of the COVID-19 pandemic	40
Understanding heterogeneity to inform the public health response to COVID-19 in Canada	38
Continuing care and COVID-19: a Canadian tragedy that must not be allowed to happen again	38
Preterm birth and stillbirth rates during the COVID-19 pandemic: a population-based cohort study	38
Supervised consumption services for acute care hospital patients	38
Anticipating and managing coagulopathy and thrombotic manifestations of severe COVID-19	37
Prone positioning for patients with hypoxic respiratory failure related to COVID-19	37
Canada’s response to the initial 2 years of the COVID-19 pandemic: a comparison with peer countries	36
Toxicology and prescribed medication histories among people experiencing fatal illicit drug overdose in British Columbia, Canada	36
Antiviral drug treatment for nonsevere COVID-19: a systematic review and network meta-analysis	36
Treatment of patients with nonsevere and severe coronavirus disease 2019: an evidence-based guideline	35
What’s important to know about the new COVID-19 variants?	33
Confronting the COVID-19 surgery crisis: time for transformational change	33
Virtual care is here to stay, but major challenges remain	32
Trends in socioeconomic inequalities in premature and avoidable mortality in Canada, 1991–2016	31
Calibration and discrimination of the Framingham Risk Score and the Pooled Cohort Equations	30
Reasons for cannabis use during pregnancy and lactation: a qualitative study	29

Active testing of groups at increased risk of acquiring SARS-CoV-2 in Canada: costs and human resource needs	28
Investigation and management of erythrocytosis	28
Virtual care for patients with Alzheimer disease and related dementias during the COVID-19 era and beyond	28
Diagnosis and management of postural orthostatic tachycardia syndrome	28
Geographic concentration of SARS-CoV-2 cases by social determinants of health in metropolitan areas in Canada: a cross-sectional study	28
Diagnosis and management of endometriosis	27
Increasing SARS-CoV-2 vaccination rates among Black people in Canada	27
Acute pancreatitis in a 61-year-old man with COVID-19	27
Life expectancy and health-adjusted life expectancy in people with inflammatory bowel disease	27
Management of the neurologically deceased organ donor: A Canadian clinical practice guideline	26
SARS-CoV-2 infection associated with spontaneous pneumothorax	26
Projected effects of nonpharmaceutical public health interventions to prevent resurgence of SARS-CoV-2 transmission in Canada	26
Clinical outcomes and health care costs among people entering a safer opioid supply program in Ontario	26
Effectiveness of intrapartum fetal surveillance to improve maternal and neonatal outcomes: a systematic review and network meta-analysis	26
Reporting of financial conflicts of interest by Canadian clinical practice guideline producers: a descriptive study	25
Postpartum mental illness during the COVID-19 pandemic: a population-based, repeated cross-sectional study	25
Serial cross-sectional estimation of vaccine-and infection-induced SARS-CoV-2 seroprevalence in British Columbia, Canada	25
Mortality among patients with frequent emergency department use for alcohol-related reasons in Ontario: a population-based cohort study	24
Managing conflicts of interest in the development of health guidelines	24
Population-based evaluation of the effectiveness of nirmatrelvir–ritonavir for reducing hospital admissions and mortality from COVID-19	24
Problems in the deployment of machine-learned models in health care	24
Differences in mRNA-1273 (Moderna) and BNT162b2 (Pfizer-BioNTech) SARS-CoV-2 vaccine immunogenicity among patients undergoing dialysis	24
Trends in prevalence of chronic disease and multimorbidity in Ontario, Canada	24
Association between long-term exposure to ambient air pollution and COVID-19 severity: a prospective cohort study	24
Postoperative outcomes for Indigenous Peoples in Canada: a systematic review	24
A population-based analysis of the impact of the COVID-19 pandemic on common abdominal and gynecological emergency department visits	23
Key populations for early COVID-19 immunization: preliminary guidance for policy	23
Impact of population mixing between vaccinated and unvaccinated subpopulations on infectious disease dynamics: implications for SARS-CoV-2 transmission	23
Redesign of a rural emergency department to prepare for the COVID-19 pandemic	22
Beau lines associated with COVID-19	22
Postpartum exacerbation of antenatal COVID-19 pneumonia in 3 women	22
Maternal and neonatal trauma following operative vaginal delivery	22
The challenges of managing diabetes while homeless: a qualitative study using photovoice methodology	22
Total knee replacement after high tibial osteotomy: time-to-event analysis and predictors	22
Integrating research into clinical practice: challenges and solutions for Canada	22
Hookah smoking and COVID-19: call for action	22
Diagnosis and management of acute respiratory distress syndrome	21
Potential resurgence of respiratory syncytial virus in Canada	21
A case of human monkeypox in Canada	21
Making sense of monkeypox death rates	21
Bradycardia associated with remdesivir therapy for COVID-19 in a 59-year-old man	21
Observed versus expected rates of myocarditis after SARS-CoV-2 vaccination: a population-based cohort study	20
Recent cannabis use and myocardial infarction in young adults: a cross-sectional study	20
Predictors of severe illness in children with multisystem inflammatory syndrome after SARS-CoV-2 infection: a multicentre cohort study	20
COVID-19 and changes to postgraduate medical education in Canada	20
The use and impact of monoclonal antibody biologics during pregnancy	20
Evaluation of machine learning solutions in medicine	20
Rapid antigen screening of asymptomatic people as a public health tool to combat COVID-19	20
Virtual overdose monitoring services: a novel adjunctive harm reduction approach for addressing the overdose crisis	19
Systemic capillary leak syndrome after ChAdOx1 nCOV-19 (Oxford–AstraZeneca) vaccination	19
Intrauterine exposure to diabetes and risk of cardiovascular disease in adolescence and early adulthood: a population-based birth cohort study	19
Burden of noninfluenza respiratory viral infections in adults admitted to hospital: analysis of a multiyear Canadian surveillance cohort from 2 centres	18
Pregnancy, breastfeeding and the SARS-CoV-2 vaccine: an ethics-based framework for shared decision-making	18
The case for a Canadian standard for 2SLGBTQIA+ medical education	18
XE, XD & XF: what to know about the Omicron hybrid variants	18
Association between antihypertensive medications and risk of skin cancer in people older than 65 years: a population-based study	18
Lung transplantation for acute COVID-19: the Toronto Lung Transplant Program experience	18
Diagnosing acute aortic syndrome: a Canadian clinical practice guideline	18
Limb ischemia and pulmonary artery thrombosis after the ChAdOx1 nCoV-19 (Oxford–AstraZeneca) vaccine: a case of vaccine-induced immune thrombotic thrombocytopenia	18
Sex differences in mortality: results from a population-based study of 12 longitudinal cohorts	18
Post-acute health care burden after SARS-CoV-2 infection: a retrospective cohort study	17
Prenatal antibiotic exposure and risk of attention-deficit/hyperactivity disorder: a population-based cohort study	17
COVID-19 and long-term care facilities: Does ownership matter?	17
Risk factors for outbreaks of SARS-CoV-2 infection at retirement homes in Ontario, Canada: a population-level cohort study	17
Assessing the process and outcome of the development of practice guidelines and recommendations: PANELVIEW instrument development	17
First Nations status and emergency department triage scores in Alberta: a retrospective cohort study	17
Not neutral: reimagining antiracism as a professional competence	17
Immune checkpoint inhibitors in cancer immunotherapy	17
Pediatric inflammatory multisystem syndrome temporally associated with COVID-19: a spectrum of diseases with many names	17
Genome sequencing as a diagnostic test	17
Suicidality among sexual minority and transgender adolescents: a nationally representative population-based study of youth in Canada	16
Keeping the front door open: ensuring access to primary care for all in Canada	16
A low-barrier, flexible safe supply program to prevent deaths from overdose	16
Five-year risk of admission to long-term care home and death for older adults given a new diagnosis of dementia: a population-based retrospective cohort study	16
Long-term social distancing during COVID-19: A social isolation crisis among seniors?	16
Inappropriate use of clinical practices in Canada: a systematic review	16
Achieving and sustaining herd immunity to SARS-CoV-2	16
Principles for clinical care of patients with COVID-19 on medical units	16
Recognizing and addressing implicit gender bias in medicine	15
How should we move for health? The case for the 24-hour movement paradigm	15

The inconvenience of motherhood during a medical career	15
Prenatal hepatitis B screening, and hepatitis B burden among children, in Ontario: a descriptive study	15
Canada needs a national strategy for anesthesia services in rural and remote regions	15
Implementing social interventions in primary care	15
Mandatory vaccination for health care workers: an analysis of law and policy	14
Excess mortality, COVID-19 and health care systems in Canada	14
Implementing digital passports for SARS-CoV-2 immunization in Canada	14
Social distancing to combat COVID-19: We are all on the front line	14
Nirmatrelvir-ritonavir for COVID-19	14
Development of a framework for critical care resource allocation for the COVID-19 pandemic in Saskatchewan	14
COVID-19 outbreak measures may indirectly lead to greater burden on hospitals	14
Caring for people who inject drugs when they are admitted to hospital	14
Managing postoperative pain in adult outpatients: a systematic review and meta-analysis comparing codeine with NSAIDs	14
Managing the modern infodemic	14
Long-distance travel for birthing among Indigenous and non-Indigenous pregnant people in Canada	13
Physician choices in pulmonary embolism testing	13
Is Canada ready for the second wave of COVID-19?	13
Oral lichen planus	13
The war in Ukraine and refugee health care: considerations for health care providers in Canada	13
Outcomes in patients with and without disability admitted to hospital with COVID-19: a retrospective cohort study	13
Investigation of a severe SARS-CoV-2 outbreak in a long-term care home early in the pandemic	13
Patient–physician language concordance and quality and safety outcomes among frail home care recipients admitted to hospital in Ontario, Canada	13
Transforming race-based health research in Canada	13
Impact of cancer surgery slowdowns on patient survival during the COVID-19 pandemic: a microsimulation modelling study	13
The mobility gap: estimating mobility thresholds required to control SARS-CoV-2 in Canada	13
Incidence and mortality rates of keratinocyte carcinoma from 1998–2017: a population-based study of sex differences in Ontario, Canada	12
Migrant workers falling through cracks in health care coverage	12
The past, present and future of race and colonialism in medicine	12
Experiences of First Nations adolescents living with type 2 diabetes: a focus group study	12
Rates of rebleeding, thrombosis and mortality associated with resumption of anticoagulant therapy after anticoagulant-related bleeding	12
Prioritizing specialized children’s surgery in Canada during the COVID-19 pandemic	12
Gender-based differences in physician payments within the fee-for-service system in Ontario: a retrospective, cross-sectional study	11
Severity of COVID-19 among solid organ transplant recipients in Canada, 2020–2021: a prospective, multicentre cohort study	11
Recommendation on instrument-based screening for depression during pregnancy and the postpartum period	11
Guillain–Barré syndrome after SARS-CoV-2 vaccination in a patient with previous vaccine-associated Guillain–Barré syndrome	11
Illuminating and mitigating the evolving impacts of COVID-19 on ethnocultural communities: a participatory action mixed-methods study	11
Managing drug shortages during a pandemic: tocilizumab and COVID-19	10
Advances in the management of pancreatic ductal adenocarcinoma	10
Recommendations for equitable COVID-19 pandemic recovery in Canada	10
SARS-CoV-2 infection in a 76-year-old man with initially negative nasopharyngeal swabs	10
COVID-19 and the prevalence of drug shortages in Canada: a cross-sectional time-series analysis from April 2017 to April 2022	10
International variation in dialysis discontinuation in patients with advanced kidney disease	10
Diversity among health care leaders in Canada: a cross-sectional study of perceived gender and race	10
Uncovering SARS-COV-2 vaccine uptake and COVID-19 impacts among First Nations, Inuit and Métis Peoples living in Toronto and London, Ontario	10
Aligning continuing professional development with quality improvement	10
Firearm-related injuries and deaths in Ontario, Canada, 2002–2016: a population-based study	10
Drug-induced liver injury	10
Maternal cardiovascular disease after twin pregnancies complicated by hypertensive disorders of pregnancy: a population-based cohort study	10
Update on fertility preservation for younger women with breast cancer	10
Shoulder injury related to SARS-CoV-2 vaccine administration	10
Innovations in genomics for undiagnosed diseases: vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic (VEXAS) syndrome	10
Changes in ischemic stroke presentations, management and outcomes during the first year of the COVID-19 pandemic in Alberta: a population study	10
Fat acceptance as social justice	10
Unpacking “long COVID”	10
Prescribing cascades in older adults	10
What to know about Omicron XBB.1.5	10
Who is Black? The urgency of accurately defining the Black population when conducting health research in Canada	10
Thyroid function testing and management during and after pregnancy among women without thyroid disease before pregnancy	9
Predicting death in home care users: derivation and validation of the Risk Evaluation for Support: Predictions for Elder-Life in the Community Tool (RESPECT)	9
Why are Indigenous communities seeing so few cases of COVID-19?	9
COVID-19 and patient engagement in health research: What have we learned?	9
Clarifying the role of lung ultrasonography in COVID-19 respiratory disease	9
Spinal cord stimulation: a nonopioid alternative for chronic pain management	9
Aggressively find, test, trace and isolate to beat COVID-19	9
Pregnancy in transgender men	9
Endometrial cancer	9
Characteristics of patients with mental illness and persistent high-cost status: a population-based analysis	9
Impact of the COVID-19 pandemic on cancer diagnoses, stage and survival in Alberta	9
Optimizing care for critically ill older adults	9
Bodychecking experience and rates of injury among ice hockey players aged 15–17 years	9
Neurosyphilis	9
Birth outcomes following cesarean delivery on maternal request: a population-based cohort study	9
Factors associated with consent for organ donation: a retrospective population-based study	9
Working in a bubble: How can businesses reopen while limiting the risk of COVID-19 outbreaks?	9
Prepregnancy renal function and risk of preterm birth and related outcomes	9
Iron deficiency and iron deficiency anemia in pregnancy	9
Possible association between rhabdomyolysis and mRNA SARS-CoV-2 vaccination in a patient with RYR1 gene mutation	8
Derivation and validation of a clinical model to predict death or cardiac hospitalizations while on the cardiac surgery waitlist	8
Recommendation on screening for chlamydia and gonorrhea in primary care for individuals not known to be at high risk	8
The risk of death or unplanned readmission after discharge from a COVID-19 hospitalization in Alberta and Ontario	8
Mucormycosis in a 40-year-old woman with diabetic ketoacidosis	8
Rupioid psoriasis on the hands	8
Recognizing, managing and reporting vaccine-induced immune thrombotic thrombocytopenia	8
Regional collaborative home-based palliative care and health care outcomes among adults with heart failure	8
Booster vaccination with inactivated whole-virus or mRNA vaccines and COVID-19–related deaths among people with multimorbidity: a cohort study	8
Pressurized metered-dose inhalers and their impact on climate change	8
Transitioning to outpatient arthroplasty during COVID-19: time to pivot	8
Changes over time in means of suicide in Canada: an analysis of mortality data from 1981 to 2018	8
CMAJ’s new guidance on the reporting of race and ethnicity in research articles	8
Public health experts are learning from Canada’s anti-mask protests	8
How Indigenous people are coping with COVID-19	8
Establishing irremediable psychiatric suffering in the context of medical assistance in dying in the Netherlands: a qualitative study	8
Safer opioid supply via a biometric dispensing machine: a qualitative study of barriers, facilitators and associated outcomes	8
Diagnostic testing for SARS-CoV-2	8
Critical race theory in medicine	8