Cardiovascular health after maternal placental syndromes (CHAMPS): population-based retrospective cohort study
Background Maternal placental syndromes, including the hypertensive disorders of pregnancy
and abruption or infarction of the placenta, probably originate from diseased placental …
and abruption or infarction of the placenta, probably originate from diseased placental …
Analysis of observational studies in the presence of treatment selection bias: effects of invasive cardiac management on AMI survival using propensity score and …
…, DE Wennberg, DA Alter, DJ Gottlieb, MJ Vermeulen - Jama, 2007 - jamanetwork.com
ContextComparisons of outcomes between patients treated and untreated in observational
studies may be biased due to differences in patient prognosis between groups, often …
studies may be biased due to differences in patient prognosis between groups, often …
Association between waiting times and short term mortality and hospital admission after departure from emergency department: population based cohort study from …
Objective To determine whether patients who are not admitted to hospital after attending an
emergency department during shifts with long waiting times are at risk for adverse events. …
emergency department during shifts with long waiting times are at risk for adverse events. …
Association between MRI exposure during pregnancy and fetal and childhood outcomes
JG Ray, MJ Vermeulen, A Bharatha, WJ Montanera… - Jama, 2016 - jamanetwork.com
Importance Fetal safety of magnetic resonance imaging (MRI) during the first trimester of
pregnancy or with gadolinium enhancement at any time of pregnancy is unknown. Objective To …
pregnancy or with gadolinium enhancement at any time of pregnancy is unknown. Objective To …
Association of neural tube defects and folic acid food fortification in Canada
Many women do not receive folic acid supplements before conception. In response, most of
Canada's cereal grain products were being fortified with folic acid by January, 1998, thereby …
Canada's cereal grain products were being fortified with folic acid by January, 1998, thereby …
Association between ABO and Rh blood groups and SARS-CoV-2 infection or severe COVID-19 illness: a population-based cohort study
Background: The ABO and rhesus (Rh) blood groups may influence risk for severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Objective: To determine whether …
respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Objective: To determine whether …
Missed diagnosis of subarachnoid hemorrhage in the emergency department
MJ Vermeulen, MJ Schull - Stroke, 2007 - Am Heart Assoc
Background and Purpose— Subarachnoid hemorrhage (SAH) can be devastating, yet its initial
presentation may be limited to common symptoms and subtle signs, potentially leading to …
presentation may be limited to common symptoms and subtle signs, potentially leading to …
Vitamin B12 and the risk of neural tube defects in a folic-acid-fortified population
Background: Low maternal vitamin B 12 status may be a risk factor for neural tube defects (NTDs).
Prior studies used relatively insensitive measures of B 12, did not adjust for folate …
Prior studies used relatively insensitive measures of B 12, did not adjust for folate …
Greater maternal weight and the ongoing risk of neural tube defects after folic acid flour fortification
OBJECTIVE: Maternal obesity is likely a risk factor for neural tube defects (NTDs). By late
1997, it became mandatory in Canada that all refined wheat flour be fortified with folic acid. …
1997, it became mandatory in Canada that all refined wheat flour be fortified with folic acid. …
Derivation and evaluation of a termination of resuscitation clinical prediction rule for advanced life support providers
LJ Morrison, PR Verbeek, MJ Vermeulen, A Kiss… - Resuscitation, 2007 - Elsevier
OBJECTIVES: The primary aim was to derive a new termination of resuscitation (TOR)
clinical prediction rule for advanced life support paramedics (ALS) and to measure both its …
clinical prediction rule for advanced life support paramedics (ALS) and to measure both its …
