T. Røraas

发表

Sickness absence with musculoskeletal or mental diagnoses, transition into disability pension and all-cause mortality: A 9-year prospective cohort study

S. Vollset, K. Alexanderson, J. Hagberg, 2009, Scandinavian journal of public health.

Point-of-care urine albumin in general practice offices: effect of participation in an external quality assurance scheme

N. G. Christensen, S. Sandberg, T. Røraas, 2015, Clinical chemistry and laboratory medicine.

Calcium, magnesium, albumin, and total protein measurement in serum as assessed with 20 fresh-frozen single-donation sera.

S. Sandberg, L. Thienpont, D. Stöckl, 2012, Clinical chemistry.

Biological variation: Evaluation of methods for constructing confidence intervals for estimates of within-person biological variation for different distributions of the within-person effect.

P. H. Petersen, S. Sandberg, Bård Støve, 2017, Clinica chimica acta; international journal of clinical chemistry.

A systematic review of data on biological variation for alanine aminotransferase, aspartate aminotransferase and γ-glutamyl transferase

S. Sandberg, W. Bartlett, F. Braga, 2013, Clinical chemistry and laboratory medicine.

Weekly and 90-minute biological variations in cardiac troponin T and cardiac troponin I in hemodialysis patients and healthy controls.

P. H. Petersen, S. Sandberg, E. Svarstad, 2014, Clinical chemistry.

Sample collections from healthy volunteers for biological variation estimates’ update: a new project undertaken by the Working Group on Biological Variation established by the European Federation of Clinical Chemistry and Laboratory Medicine

S. Sandberg, M. Serteser, I. Unsal, 2016, Clinical chemistry and laboratory medicine.

Biological variation of hemoglobin A1c: consequences for diagnosing diabetes mellitus.

S. Sandberg, E. Lenters-Westra, R. Slingerland, 2014, Clinical chemistry.

The influence of coagulation factors on the in-treatment biological variation of international normalized ratio for patients on warfarin

P. H. Petersen, Grete Monsen, S. Sandberg, 2014, Scandinavian journal of clinical and laboratory investigation.

The EuBIVAS Project: Within- and Between-Subject Biological Variation Data for Serum Creatinine Using Enzymatic and Alkaline Picrate Methods and Implications for Monitoring.

Mustafa Serteser, Mario Plebani, Sverre Sandberg, 2017, Clinical chemistry.

Harmonization initiatives in the generation, reporting and application of biological variation data

S. Sandberg, W. Bartlett, F. Braga, 2018, Clinical chemistry and laboratory medicine.

Feasibility of using self-reported patient data in a national diabetes register

S. Sandberg, G. Thue, J. Cooper, 2015, BMC Health Services Research.

Biological Variation Estimates Obtained from 91 Healthy Study Participants for 9 Enzymes in Serum.

Mustafa Serteser, Mario Plebani, Sverre Sandberg, 2017, Clinical chemistry.

Concentration of fibrin monomer in pregnancy and during the postpartum period

P. H. Petersen, S. Sandberg, L. Bjørge, 2019, Annals of clinical biochemistry.

Week-to-week biological variation in the N-terminal prohormone of brain natriuretic peptide in hemodialysis patients and healthy individuals.

P. H. Petersen, S. Sandberg, E. Svarstad, 2013, Clinical chemistry.

Biological variation – reliable data is essential

S. Sandberg, A. Aarsand, T. Røraas, 2015, Clinical chemistry and laboratory medicine.

Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women

P. H. Petersen, S. Sandberg, L. Bjørge, 2018, Clinical chemistry and laboratory medicine.

Biological Variation: The Effect of Different Distributions on Estimated Within-Person Variation and Reference Change Values.

P. H. Petersen, S. Sandberg, Bård Støve, 2016, Clinical chemistry.

Estimates of Within-Subject Biological Variation of Protein C, Antithrombin, Protein S Free, Protein S Activity, and Activated Protein C Resistance in Pregnant Women.

P. H. Petersen, S. Sandberg, T. Røraas, 2017, Clinical chemistry.

The variation in high sensitive cardiac troponin concentration during haemodialysis treatment is not similar to the biological variation observed in stable end stage renal disease patients

Sverre Sandberg, Per Hyltoft Petersen, Thomas Røraas, 2016, Scandinavian journal of clinical and laboratory investigation.

Effect of coagulation factors on discrepancies in International Normalized Ratio results between instruments

P. H. Petersen, Grete Monsen, S. Sandberg, 2012, Clinical chemistry and laboratory medicine.

The Biological Variation Data Critical Appraisal Checklist: A Standard for Evaluating Studies on Biological Variation.

Joana Minchinela, Carmen Perich, Margarita Simón, 2018, Clinical chemistry.

Biological variation estimates for prostate specific antigen from the European Biological Variation Study; consequences for diagnosis and monitoring of prostate cancer.

S. Sandberg, A. Briganti, F. Ceriotti, 2018, Clinica chimica acta; international journal of clinical chemistry.

The EuBIVAS: Within- and Between-Subject Biological Variation Data for Electrolytes, Lipids, Urea, Uric Acid, Total Protein, Total Bilirubin, Direct Bilirubin, and Glucose.

S. Sandberg, M. Serteser, I. Unsal, 2018, Clinical chemistry.

Confidence intervals and power calculations for within-person biological variation: effect of analytical imprecision, number of replicates, number of samples, and number of individuals.

Sverre Sandberg, Thomas Røraas, P. H. Petersen, 2012, Clinical chemistry.

Statistical power for commutability testing in the presence of random, sample-related effects by use of the EP14 protocol.

Dietmar Stöckl, Thomas H Røraas, Sofie K Van Houcke, 2012, Clinica chimica acta; international journal of clinical chemistry.

The European Biological Variation Study (EuBIVAS): Biological Variation Data for Coagulation Markers Estimated by a Bayesian Model.

S. Sandberg, F. Ceriotti, Bård Støve, 2021, Clinical chemistry.

Diagnosing diabetes mellitus: performance of hemoglobin A1c point-of-care instruments in general practice offices.

N. G. Christensen, S. Sandberg, T. Røraas, 2013, Clinical chemistry.

Regional differences in sales of glucometer strips and antidiabetics.

S. Sandberg, A. Granås, T. Røraas, 2012, Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke.

A checklist for critical appraisal of studies of biological variation

Sverre Sandberg, Federica Braga, Anna Carobene, 2015, Clinical chemistry and laboratory medicine.

Systematic review of the biological variation data for diabetes related analytes.

S. Sandberg, W. Bartlett, F. Braga, 2019, Clinica chimica acta; international journal of clinical chemistry.

The prevalence of self-monitoring of blood glucose and costs of glucometer strips in a nationwide cohort.

S. Sandberg, A. Granås, K. Nerhus, 2010, Diabetes technology & therapeutics.

A Bayesian Approach to Biological Variation Analysis.

Thomas Røraas, Sverre Sandberg, Aasne K Aarsand, 2019, Clinical chemistry.

Biological variation estimates for prostate specific antigen from the European Biological Variation Study; consequences for diagnosis and monitoring of prostate cancer.

S. Sandberg, A. Briganti, F. Ceriotti, 2018, Clinica chimica acta; international journal of clinical chemistry.

Benchmarking by HbA1c in a national diabetes quality register – does measurement bias matter?

S. Sandberg, G. Thue, L. Gøransson, 2015, Clinical chemistry and laboratory medicine.