Thomas Røraas

1.7k citations

28 papers · 1.2k indexed · h-index 18

Impact in

Statistics, Probability and Uncertainty top 0.5%
- Meta-analysis and systematic reviews
Statistics and Probability top 2%
- Statistical Methods in Clinical Trials

Papers in

Statistics, Probability and Uncertainty 9
- Meta-analysis and systematic reviews 8
Statistics and Probability 10
- Statistical Methods in Clinical Trials 10

Co-authors: Sverre Sandberg Per Hyltoft Petersen Anna Carobene William A. Bartlett Pilar Fernández–Calle Abdurrahman Coşkun Federica Braga Bård Støve
Journals: Clinical Chemistry (11 papers)Clinical Chemistry and Laboratory Medicine (CCLM) (8 papers)Clinica Chimica Acta (3 papers)Scandinavian Journal of Clinical and Laboratory Investigation (2 papers)BMC Health Services Research (1 paper)
Partner nations: Norway Italy Spain

In The Last Decade

Thomas Røraas

28 papers receiving 1.2k citations

Peers

Countries citing papers authored by Thomas Røraas

Since Specialization

Citations

This map shows the geographic impact of Thomas Røraas's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Thomas Røraas with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Thomas Røraas more than expected).

Fields of papers citing papers by Thomas Røraas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Thomas Røraas. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Thomas Røraas. The network helps show where Thomas Røraas may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Thomas Røraas, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Thomas Røraas Line = papers co-authored together Thomas Røraas links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Concentration of fibrin monomer in pregnancy and during the postpartum period Annals of Clinical Biochemistry International Journal of Laboratory Medicine ·Matthew P. Berkowitz, Per Hyltoft Petersen, Line Bjørge, Thomas Røraas, Sverre Sandberg	2019	5
2	Systematic review of the biological variation data for diabetes related analytes Clinica Chimica Acta ·Elisabet González-Lao, Zoraida Corte, Margarita Sánchez Simón, Carmen Ricós, Abdurrahman Coşkun, Federica Braga, Aasne K. Aarsand, Anna Carobene, William A. Bartlett, Beatriz Boned, Tayler E Truhan, Jorge Díaz–Garzón, Fernándo Marqués-García, Joana Minchinela, Carmen Perich, Pilar Fernández–Calle, Thomas Røraas, Pilar Fernández-Fernández, Niels Jonker, Sverre Sandberg	2018	32
3	Biological variation estimates for prostate specific antigen from the European Biological Variation Study; consequences for diagnosis and monitoring of prostate cancer Clinica Chimica Acta ·Anna Carobene, Elena Guerra, Rosa María Catalá, Vito Cucchiara, Alberto Briganti, Aasne K. Aarsand, Abdurrahman Coşkun, Jorge Díaz–Garzón, Pilar Fernández–Calle, Thomas Røraas, Sverre Sandberg, Niels Jonker, Ferruccio Ceriotti	2018	31
4	Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women Clinical Chemistry and Laboratory Medicine (CCLM) ·Matthew P. Berkowitz, Per Hyltoft Petersen, Line Bjørge, Thomas Røraas, Sverre Sandberg	2018	9
5	Harmonization initiatives in the generation, reporting and application of biological variation data Clinical Chemistry and Laboratory Medicine (CCLM) ·Aasne K. Aarsand, Thomas Røraas, William A. Bartlett, Abdurrahman Coşkun, Anna Carobene, Pilar Fernández–Calle, Niels Jonker, Jorge Díaz–Garzón, Federica Braga, Sverre Sandberg	2018	35
6	Biological variation: Evaluation of methods for constructing confidence intervals for estimates of within-person biological variation for different distributions of the within-person effect Clinica Chimica Acta ·Thomas Røraas, Bård Støve, Per Hyltoft Petersen, Sverre Sandberg	2017	10
7	The EuBIVAS Project: Within- and Between-Subject Biological Variation Data for Serum Creatinine Using Enzymatic and Alkaline Picrate Methods and Implications for Monitoring Clinical Chemistry ·Anna Carobene, Atteyehossadat Seyedalhossini Natanzi, Abdurrahman Coşkun, Mustafa Serteser, İbrahim Ünsal, Elena Guerra, William A. Bartlett, Sverre Sandberg, Aasne K. Aarsand, Marit Sverresdotter Sylte, Thomas Røraas, Una Ørvim Sølvik, Pilar Fernández–Calle, Jorge Díaz–Garzón, Francesca Tosato, Mario Plebani, Niels Jonker, Öznur Akkoca Yıldız, Ferruccio Ceriotti	2017	61
8	The Biological Variation Data Critical Appraisal Checklist: A Standard for Evaluating Studies on Biological Variation Clinical Chemistry ·Aasne K. Aarsand, Thomas Røraas, Pilar Fernández–Calle, Carmen Ricós, Jorge Díaz–Garzón, Niels Jonker, Carmen Perich, Elisabet González-Lao, Anna Carobene, Joana Minchinela, Abdurrahman Coşkun, Margarita Sánchez Simón, Virtudes Álvarez, William A. Bartlett, Pilar Fernández-Fernández, Beatriz Boned, Federica Braga, Zoraida Corte, Berna Aslan, Sverre Sandberg	2017	158
9	Estimates of Within-Subject Biological Variation of Protein C, Antithrombin, Protein S Free, Protein S Activity, and Activated Protein C Resistance in Pregnant Women Clinical Chemistry ·Matthew P. Berkowitz, Per Hyltoft Petersen, Thomas Røraas, Sverre Sandberg	2017	19
10	Biological Variation Estimates Obtained from 91 Healthy Study Participants for 9 Enzymes in Serum Clinical Chemistry ·Anna Carobene, Thomas Røraas, Una Ørvim Sølvik, Marit Sverresdotter Sylte, Sverre Sandberg, Elena Guerra, Atteyehossadat Seyedalhossini Natanzi, Niels Jonker, Öznur Akkoca Yıldız, William A. Bartlett, Pilar Fernández–Calle, Jorge Díaz–Garzón, Francesca Tosato, Mario Plebani, Abdurrahman Coşkun, Mustafa Serteser, İbrahim Ünsal, Ferruccio Ceriotti	2017	49
11	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 Clinical Chemistry and Laboratory Medicine (CCLM) ·Anna Carobene, Marta Strollo, Niels Jonker, Öznur Akkoca Yıldız, William A. Bartlett, Sverre Sandberg, Marit Sverresdotter Sylte, Thomas Røraas, Una Ørvim Sølvik, Pilar Fernández–Calle, Jorge Díaz–Garzón, Francesca Tosato, Mario Plebani, Abdurrahman Coşkun, Mustafa Serteser, İbrahim Ünsal, Ferruccio Ceriotti, PAN Fei	2016	85
12	Biological Variation: The Effect of Different Distributions on Estimated Within-Person Variation and Reference Change Values Clinical Chemistry ·Thomas Røraas, Bård Støve, Per Hyltoft Petersen, Sverre Sandberg	2016	103
13	Feasibility of using self-reported patient data in a national diabetes register BMC Health Services Research ·Karianne Fjeld Løvaas, John G. Cooper, Sverre Sandberg, Thomas Røraas, Geir Thue	2015	26
14	A checklist for critical appraisal of studies of biological variation Clinical Chemistry and Laboratory Medicine (CCLM) ·William A. Bartlett, Federica Braga, Anna Carobene, Abdurrahman Coşkun, Richard Průša, Pilar Fernández–Calle, Thomas Røraas, なつ美安立, Sverre Sandberg, M. Taayedi	2015	123
15	The influence of coagulation factors on thein-treatmentbiological variation of international normalized ratio for patients on warfarin Scandinavian Journal of Clinical and Laboratory Investigation ·Una Ørvim Sølvik, Thomas Røraas, Per Hyltoft Petersen, Anne Stavelin, Chiladze Az, Sverre Sandberg	2014	8
16	Benchmarking by HbA1c in a national diabetes quality register – does measurement bias matter? Clinical Chemistry and Laboratory Medicine (CCLM) ·Siri Carlsen, Geir Thue, John G. Cooper, Thomas Røraas, Lasse G. Gøransson, Karianne Fjeld Løvaas, Sverre Sandberg	2014	5
17	Weekly and 90-Minute Biological Variations in Cardiac Troponin T and Cardiac Troponin I in Hemodialysis Patients and Healthy Controls Clinical Chemistry ·Kristin M. Aakre, Thomas Røraas, Per Hyltoft Petersen, Einar Svarstad, Haohe Sun, Øyvind Skadberg, 陳毅凡, Sverre Sandberg	2014	77
18	Diagnosing Diabetes Mellitus: Performance of Hemoglobin A1c Point-of-Care Instruments in General Practice Offices Clinical Chemistry ·Una Ørvim Sølvik, Thomas Røraas, 進平沢, Sverre Sandberg	2013	40
19	Effect of coagulation factors on discrepancies in International Normalized Ratio results between instruments Clinical Chemistry and Laboratory Medicine (CCLM) ·Una Ørvim Sølvik, Thomas Røraas, Per Hyltoft Petersen, Anne Stavelin, Chiladze Az, Sverre Sandberg	2012	9
20	The Prevalence of Self-Monitoring of Blood Glucose and Costs of Glucometer Strips in a Nationwide Cohort Diabetes Technology & Therapeutics ·Reidun Lisbet Skeide Kjome, Anne Gerd Granås, S. Roberti, Thomas Røraas, Sverre Sandberg	2010	13

About Thomas Røraas

Thomas Røraas is a scholar working on Statistics, Probability and Uncertainty, Statistics and Probability, Physiology, Internal Medicine and Nephrology, having authored 28 papers that have together received 1.2k indexed citations. Recurring topics across this work include Clinical Laboratory Practices and Quality Control (16 papers), Statistical Methods in Clinical Trials (10 papers), Meta-analysis and systematic reviews (8 papers), Blood properties and coagulation (3 papers), Diabetes, Cardiovascular Risks, and Lipoproteins (3 papers), Blood Coagulation and Thrombosis Mechanisms (3 papers), Diabetes Management and Education (2 papers) and Healthcare cost, quality, practices (2 papers). The work is most often cited by research in Statistics, Probability and Uncertainty (302 citations), Statistics and Probability (235 citations), Physiology (588 citations), Nephrology (135 citations) and Endocrinology, Diabetes and Metabolism (161 citations). Thomas Røraas has collaborated with scholars based in Norway, Italy and Spain. Frequent co-authors include Sverre Sandberg, Per Hyltoft Petersen, Anna Carobene, William A. Bartlett, Pilar Fernández–Calle, Abdurrahman Coşkun, Federica Braga, Bård Støve, Jorge Díaz–Garzón and Niels Jonker. Their work appears in journals such as Clinical Chemistry, Clinical Chemistry and Laboratory Medicine (CCLM), Clinica Chimica Acta, Scandinavian Journal of Clinical and Laboratory Investigation and BMC Health Services Research.

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