The self controlled case series (SCCS) method is an epidemiological study design for which
individuals act as their own control—ie, comparisons are made within individuals. Hence …

Objective To quantify the risk of deep vein thrombosis, pulmonary embolism, and bleeding
after covid-19. Design Self-controlled case series and matched cohort study. Setting …

Background COVID-19 is a complex disease targeting many organs. Previous studies
highlight COVID-19 as a probable risk factor for acute cardiovascular complications. We …

Objective To assess the association between covid-19 vaccines and risk of
thrombocytopenia and thromboembolic events in England among adults. Design Self …

Purpose Consensus is needed on conceptual foundations, terminology and relationships
among the various self‐controlled “trigger” study designs that control for time‐invariant …

CORRESPONDENCE of COVID-19; 3174 (62%) had received an outpatient diagnosis.
Among this population, 44 patients had firstever ischemic stroke during the observation …

Background Acute myocardial infarction can be triggered by acute respiratory infections.
Previous studies have suggested an association between influenza and acute myocardial …

Several studies have reported associations between COVID-19 vaccination and risk of
cardiac diseases, especially in young people; the impact on mortality, however, remains …

In pharmacoepidemiology, routinely collected data from electronic health records (including
primary care databases, registries, and administrative healthcare claims) are a resource for …

Objective To determine the frequency of prescriptions for short term use of oral
corticosteroids, and adverse events (sepsis, venous thromboembolism, fractures) associated …