D. T. Kristoffersen

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Brain Metastases — Comparison of Gadodiamide Injection-Enhanced MR Imaging at Standard and High Dose, Contrast-Enhanced CT and Non-Contrast-Enhanced MR Imaging

E. Larsson, S. Holtås, D. Kristoffersen, 1995, Acta radiologica.

Systematic review to determine whether participation in a trial influences outcome

A. Oxman, G. Vist, P. Devereaux, 2005, BMJ : British Medical Journal.

participation in a trial influences outcome Systematic review to determine whether

A. Oxman, G. Vist, P. Devereaux, 2008 .

Audit and feedback: effects on professional practice and health care outcomes.

A D Oxman, A. Oxman, G. Jamtvedt, 2006, The Cochrane database of systematic reviews.

Educational outreach visits: effects on professional practice and health care outcomes.

A D Oxman, N Freemantle, R B Haynes, 2007, The Cochrane database of systematic reviews.

Does telling people what they have been doing change what they do? A systematic review of the effects of audit and feedback

Jane M. Young, A. Oxman, G. Jamtvedt, 2006, Quality and Safety in Health Care.

The Effect of Alternative Summary Statistics for Communicating Risk Reduction on Decisions about Taking Statins: A Randomized Trial

Andrew D. Oxman, Holger J. Schünemann, Victor M. Montori, 2009, PLoS medicine.

How Should the Impact of Different Presentations of Treatment Effects on Patient Choice Be Evaluated? A Pilot Randomized Trial

Cheryl L. L. Carling, E. Akl, A. Oxman, 2008, PloS one.

Postoperative wound dehiscence after laparotomy: a useful healthcare quality indicator? A cohort study based on Norwegian hospital administrative data

A. Lindahl, D. Kristoffersen, J. Helgeland, 2019, BMJ Open.

Early activity in mechanically ventilated patients – a meta-analysis

S. Beitland, Hanna Eikås Klem, Tuva Sofie Tveiten, 2021 .

Audit and feedback: effects on professional practice and health care outcomes.

A. Oxman, G. Jamtvedt, J. Young, 2003, The Cochrane database of systematic reviews.

Hospital Variation in 30‐Day Mortality for Patients With Stroke; The Impact of Individual and Municipal Socio‐Demographic Status

D. Kristoffersen, J. Helgeland, T. M. Hansen, 2019, Journal of the American Heart Association.

Does a Code for Acute Myocardial Infarction Mean the Same in All Norwegian Hospitals? A Likelihood Approach to a Medical Record Review

D. Kristoffersen, J. Helgeland, K. Skyrud, 2022, Clinical epidemiology.

Variation between Hospitals with Regard to Diagnostic Practice, Coding Accuracy, and Case-Mix. A Retrospective Validation Study of Administrative Data versus Medical Records for Estimating 30-Day Mortality after Hip Fracture

D. Kristoffersen, J. Helgeland, A. Lindman, 2016, PloS one.

Comparing hospital mortality – how to count does matter for patients hospitalized for acute myocardial infarction (AMI), stroke and hip fracture

P. Laake, M. Veierød, D. Kristoffersen, 2012, BMC Health Services Research.

Myelography with a dimeric (iodixanol) and a monomeric (iohexol) contrast medium: a clinical multicentre comparative study

D. Kristoffersen, J. Bonneville, P. Grané, 1998, European Radiology.

Post-covid medical complaints following infection with SARS-CoV-2 Omicron vs Delta variants

A. Kiadaliri, S. Bierma-Zeinstra, M. Englund, 2022, Nature Communications.

The Effect of How Outcomes Are Framed on Decisions about Whether to Take Antihypertensive Medication: A Randomized Trial

Cheryl L. L. Carling, E. Akl, S. Flottorp, 2010, PloS one.

Comparison of traditional cox regression and causal modeling to investigate the association between long-term air pollution exposure and natural-cause mortality within European cohorts.

B. Brunekreef, M. Stafoggia, G. Hoek, 2023, Environmental pollution.

Long-term exposure to low ambient air pollution concentrations and mortality among 28 million people: results from seven large European cohorts within the ELAPSE project.

B. Brunekreef, G. Severi, J. Gulliver, 2022, The Lancet. Planetary health.

Rational Prescribing in Primary Care (RaPP): A Cluster Randomized Trial of a Tailored Intervention

A. Oxman, S. Treweek, A. Fretheim, 2003, PLoS medicine.

The Effects of Mandatory Prescribing of Thiazides for Newly Treated, Uncomplicated Hypertension: Interrupted Time-Series Analysis

A. Oxman, A. Fretheim, G. MacLennan, 2007, PLoS medicine.

Healthcare use in 700 000 children and adolescents for six months after covid-19: before and after register based cohort study

K. Telle, P. Surén, D. Kristoffersen, 2022, BMJ.

Iodixanol in Cardioangiography in Patients with Coronary Artery Disease

K. Endresen, D. Kristoffersen, N. Kløw, 1993, Acta radiologica.

QT prolongation predicts short-term mortality independent of comorbidity

D. Kristoffersen, K. Haugaa, M. Svendsen, 2019, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology.

Long-term exposure to low-level air pollution and incidence of asthma: the ELAPSE project

A. Peters, B. Brunekreef, A. Tjønneland, 2021, European Respiratory Journal.

Long-Term Exposure to Low-Level PM2.5 and Mortality: Investigation of Heterogeneity by Harmonizing Analyses in Large Cohort Studies in Canada, United States, and Europe

M. Stafoggia, Z. Andersen, E. Samoli, 2023, Environmental health perspectives.

30-Day Survival Probabilities as a Quality Indicator for Norwegian Hospitals: Data Management and Analysis

D. Kristoffersen, J. Helgeland, A. Lindman, 2015, PloS one.

Mr Imaging in Recurrent Pain after Back Surgery

S. Holtås, D. Kristoffersen, P. Åkeson, 1996, Acta radiologica.

Survival curves to support quality improvement in hospitals with excess 30-day mortality after acute myocardial infarction, cerebral stroke and hip fracture: a before–after study

Dirk Clemens, D. Kristoffersen, J. Helgeland, 2015, BMJ Open.

Safety and tolerability of iodixanol in healthy volunteers with reference to two monomeric X-ray contrast media.

D. Kristoffersen, L. Theodorsen, K. Borch, 1992, European journal of radiology.

Outcomes of patients who participate in randomised controlled trials compared to similar patients receiving similar interventions who do not participate.

A. Oxman, G. Vist, P. Devereaux, 2007, The Cochrane database of systematic reviews.