🏆 Finalist — NIH Data Sharing Index (“S-Index”) Challenge

Unnur Valdimarsdóttir

Harvard University

ORCID: 0000-0001-5382-946X

Also affiliated with University of Iceland, Karolinska Institutet

Social SciencesMedicinePsychology

Pilot corpus only

This score is computed over theSindex pilot corpus and does not cover the full scientific literature. Scores are relative to papers we have ingested — papers, authors, and institutions outside the pilot are not represented. Methodology.

Top 2%percentile
2.0Author DataRank

Indexed papers

3in pilot corpus
datarank_citation_only_1hop_v6· scope data_onlyMethodology
Why this DataRank?

An author's DataRank is the sum of the DataRanks of all 3 indexed papers attributed to them. A prolific author with many moderate-impact papers can outrank one with a single high-impact paper.

Author scores recompute whenever paper DataRanks are refreshed, so this number lags the underlying paper scores by at most one batch run.

Read the full methodology →

Top data-sharing exemplar

The highest-impact dataset this researcher has shared, ranked by DataRank — the single contribution doing the most to lift their data-sharing standing.

Psychiatric disorders and subsequent risk of cardiovascular disease: a longitudinal matched cohort study across three countries

EClinicalMedicine(2023)10.1016/j.eclinm.2023.102063
Top 16%
1.3DataRank
Top 16%62 citations

Dorte Helenius Mikkelsen, Laura Birgit Luitva, Huan Song, Silva Kasela, Thor Aspelund +13 more

Papers

Driven by 13 papers — median percentile 77. Top paper: “Acute COVID-19 severity and mental health morbidity trajectories in patient populations of six nations: an observational study”.

Acute COVID-19 severity and mental health morbidity trajectories in patient populations of six nations: an observational study

The Lancet Public Health(2022)10.1016/s2468-2667(22)00042-1
N/A
4.6DataRank · unranked
169 citations

Anikó Lovik, Anna Bára Unnarsdóttir, Daniel L. McCartney, Helga Ask, Kadri Kõiv +44 more

Time to abandon early detection cancer screening

European Journal of Clinical Investigation(2019)10.1111/eci.13062
N/A
1.4DataRank · unranked
31 citations

Mette Kalager, Unnur Valdimarsdottir, Michael Bretthauer, John P. A. Ioannidis, Unnur Valdimarsdóttir +1 more

Psychiatric disorders and subsequent risk of cardiovascular disease: a longitudinal matched cohort study across three countries

EClinicalMedicine(2023)10.1016/j.eclinm.2023.102063
Top 16%
1.3DataRank
Top 16%62 citations

Dorte Helenius Mikkelsen, Laura Birgit Luitva, Huan Song, Silva Kasela, Thor Aspelund +13 more

Distinct biological signature and modifiable risk factors underlie the comorbidity between major depressive disorder and cardiovascular disease

Nature Cardiovascular Research(2024)10.1038/s44161-024-00488-y
N/A
1.1DataRank · unranked
48 citations

Joëlle A. Pasman, Ziyan Ma, Arvid Harder, Shuyang Yao, Nadine Parker +21 more

Quantifying the relative importance of genetics and environment on the comorbidity between mental and cardiometabolic disorders using 17 million Scandinavians

Nature Communications(2024)10.1038/s41467-024-49507-3
Top 30%
0.671DataRank
Top 30%25 citations

Kejia Hu, Morten Dybdahl Krebs, Georgios Athanasiadis, Sarah Washbrook, Richard Zetterberg +18 more

Distinct genomic signatures and modifiable risk factors underly the comorbidity between major depressive disorder and cardiovascular disease

medRxiv(2023)10.1101/2023.09.01.23294931
N/A
0.600DataRank · unranked
7 citations

Joëlle A. Pasman, Ziyan Ma, Arvid Harder, Shuyang Yao, Nadine Parker +21 more

The Relationship of Attention-Deficit/Hyperactivity Disorder With Posttraumatic Stress Disorder: A Two-Sample Mendelian Randomization and Population-Based Sibling Comparison Study

Biological Psychiatry(2022)10.1016/j.biopsych.2022.08.012
N/A
0.538DataRank · unranked
35 citations

Miguel Garcia‐Argibay, Brenda Cabrera‐Mendoza, Unnur Valdimarsdóttir, Joel Gelernter, Murray B Stein +91 more

Assessing neurocognitive outcomes in PTSD: a multilevel meta-analytical approach

European Journal of Psychotraumatology(2025)10.1080/20008066.2025.2469978
N/A
0.330DataRank · unranked
8 citations

Hjordis Lilja Lorange, Thorhildur Halldorsdottir, Birna Baldursdottir, Heiðdís Valdimarsdóttir, Unnur Valdimarsdóttir +2 more

Adiposity, Weight Change, and Urinary Melatonin Levels among Men in the Multiethnic Cohort

Cancer Epidemiology Biomarkers & Prevention(2023)10.1158/1055-9965.epi-23-0860
N/A
0DataRank · unranked
3 citations

Jane B. Vaselkiv, Iona Cheng, Eva Schernhammer, Zhike Lin, Christopher A. Haiman +6 more

Childhood asthma, allergies and risk of premenstrual disorders in young adulthood

Nature Mental Health(2023)10.1038/s44220-023-00066-4
N/A
0DataRank · unranked
11 citations

Tong Gong, Carlos A. Camargo, Unnur Valdimarsdóttir, Elizabeth R. Bertone‐Johnson, Donghao Lu +1 more

The prevalence of hypnic headache in Iceland

Cephalalgia(2020)10.1177/0333102420911209
N/A
0DataRank · unranked
12 citations

I Scher, Dawn C. Buse, Gretchen E. Tietjen, Richard B. Lipton, Lenore J. Launer +3 more

Genome-Wide Association Study of Distressing Premenstrual Symptoms in Two Nordic Populations

medRxiv(2025)10.64898/2025.12.01.25341208
N/A
0DataRank · unranked
0 citations

Piotr Jahołkowski, Alexey Shadrin, Jacob Bergstedt, Yi Lu, Elizabeth R. Bertone‐Johnson +12 more

Pubertal development and risk of premenstrual disorders in young adulthood

Human Reproduction(2020)10.1093/humrep/deaa309
N/A
0DataRank · unranked
41 citations

Jūratė Aleknavičiūtė, Ragnar Bjarnason, Rulla M. Tamimi, Unnur Valdimarsdóttir, Elizabeth R. Bertone‐Johnson +1 more