SARS-CoV-2 Vaccination and Myocarditis in a Nordic Cohort Study of 23 Million Residents.

Importance: Reports of myocarditis after SARS-CoV-2 messenger RNA (mRNA) vaccination have emerged.

Objective: To evaluate the risks of myocarditis and pericarditis following SARS-CoV-2 vaccination by vaccine product, vaccination dose number, sex, and age.

Design, Setting, And Participants: Four cohort studies were conducted according to a common protocol, and the results were combined using meta-analysis.

Change in cardiovascular risk assessment tool and updated Norwegian guidelines for cardiovascular disease in primary prevention increase the population proportion at risk: the Tromsø Study 2015-2016.

Aims: To compare the population proportion at high risk of cardiovascular disease (CVD) using the Norwegian NORRISK 1 that predicts 10-year risk of CVD mortality and the Norwegian national guidelines from 2009, with the updated NORRISK 2 that predicts 10-year risk of both fatal and non-fatal risk of CVD and the Norwegian national guidelines from 2017.

Methods: We included participants from the Norwegian population-based Tromsø Study (2015-2016) aged 40-69 years without a history of CVD (n=16 566). The total proportion eligible for intervention was identified by NORRISK 1 and the 2009 guidelines (serum total cholesterol ≥8 mmol/L, systolic blood pressure ≥160 mm Hg or diastolic blood pressure ≥100 mm Hg) and NORRISK 2 and the 2017 guidelines (serum total cholesterol ≥7 mmol/L, low density lipoprotein (LDL) cholesterol ≥5 mmol/L, systolic blood pressure ≥160 mm Hg or diastolic blood pressure ≥100 mm Hg).

Using multiple random index dates with the reverse waiting time distribution improves precision of estimated prescription durations.

Purpose: To improve the precision of prescription duration estimates when using the reverse waiting time distribution (rWTD).

Methods: For each patient we uniformly sampled multiple random index dates within a sampling window of length . For each index date, we identified the last preceding prescription redemption, if any, within distance .

Occupational physical activity and longevity in working men and women in Norway: a prospective cohort study.

Background: Studies suggest that high occupational physical activity increases mortality risk. However, it is unclear whether this association is causal or can be explained by a complex network of socioeconomic and behavioural factors. We aimed to examine the association between occupational physical activity and longevity, taking a complex network of confounding variables into account.

Validation of the cardiovascular risk model NORRISK 2 in South Asians and people with diabetes.

To evaluate the predictive ability of the previously published NORRISK 2 cardiovascular risk model in Norwegian-born and immigrants born in South Asia living in Norway, and to add information about diabetes and ethnicity in an updated model for South Asians and diabetics (NORRISK 2-SADia). We included participants (30-74 years) born in Norway ( = 13,885) or South Asia ( = 1942) from health surveys conducted in Oslo 2000-2003. Cardiovascular disease (CVD) risk factor information including self-reported diabetes was linked with information on subsequent acute myocardial infarction (AMI) and acute cerebral stroke in hospital and mortality registry data throughout 2014 from the nationwide CVDNOR project.

Risk of cardiovascular disease after preventive salpingo-oophorectomy.

Introduction: Breast cancer susceptibility gene (BRCA) mutation carriers are recommended to undergo early oophorectomy to prevent ovarian cancer. Premature loss of ovarian hormones may increase the risk of cardiovascular disease. Because women with preventive oophorectomy are mainly young and healthy, they rarely undergo specialized cardiological surveillance.

Cardiovascular Risk Factors Associated With Venous Thromboembolism.

Importance: It is uncertain to what extent established cardiovascular risk factors are associated with venous thromboembolism (VTE).

Objective: To estimate the associations of major cardiovascular risk factors with VTE, ie, deep vein thrombosis and pulmonary embolism.

Design, Setting, And Participants: This study included individual participant data mostly from essentially population-based cohort studies from the Emerging Risk Factors Collaboration (ERFC; 731 728 participants; 75 cohorts; years of baseline surveys, February 1960 to June 2008; latest date of follow-up, December 2015) and the UK Biobank (421 537 participants; years of baseline surveys, March 2006 to September 2010; latest date of follow-up, February 2016).

Performance of a Framingham cardiovascular risk model among Indians and Europeans in New Zealand and the role of body mass index and social deprivation.

Objectives: To evaluate a Framingham 5-year cardiovascular disease (CVD) risk score in Indians and Europeans in New Zealand, and determine whether body mass index (BMI) and socioeconomic deprivation were independent predictors of CVD risk.

Methods: We included Indians and Europeans, aged 30-74 years without prior CVD undergoing risk assessment in New Zealand primary care during 2002-2015 (n=256 446). Risk profiles included standard Framingham predictors (age, sex, systolic blood pressure, total cholesterol/high-density lipoprotein ratio, smoking and diabetes) and were linked with national CVD hospitalisations and mortality datasets.

Impact of age on excess risk of coronary heart disease in patients with familial hypercholesterolaemia.

Objective: The primary objective was to study the risk of acute myocardial infarction (AMI) and coronary heart disease (CHD) in patients with familial hypercholesterolaemia (FH) and compare with the risk in the general population.

Methods: Patients with an FH mutation but without prior AMI (n=3071) and without prior CHD (n=2795) were included in the study sample during 2001-2009. We obtained data on all AMI and CHD hospitalisations in Norway.

Smoking and risk of ovarian cancer by histological subtypes: an analysis among 300 000 Norwegian women.

Background: We prospectively investigated the association between different measures of smoking exposure and the risk of serous, mucinous, and endometrioid ovarian cancers (OC) in a cohort of more than 300 000 Norwegian women.

Methods: We followed 300 398 women aged 19-67 years at enrolment until 31 December 2013 for OC incidence through linkage to national registries. We used Cox proportional hazards models with attained age as the underlying time scale to estimate multivariable-adjusted hazard ratios (HRs) with 95% confidence intervals (CIs) adjusted for relevant confounders.

Height and body mass index in relation to total mortality.

Background: The relation between body mass index (BMI) and mortality is not clear in the literature. An inverse relation between height and mortality has been suggested. We explore these relations in a very large cohort in Norway.