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

Christopher Levi

John Hunter Hospital

ORCID: 0000-0002-9474-796X

Also affiliated with Hunter Medical Research Institute, Hunter New England Local Health District, University of Newcastle Australia

Medicine

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 7%percentile
0.104Author DataRank

Indexed papers

1in 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 1 indexed paper 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.

Deep profiling of multiple ischemic lesions in a large, multi-center cohort: Frequency, spatial distribution, and associations to clinical characteristics

medRxiv(2022)10.1101/2022.07.01.22277062
Top 78%
0.104DataRank
Top 78%1 citations

Teresa Ullberg, Martin Bretzner, Sung‐Min Hong, Markus D. Schirmer, Robert W. Regenhardt +48 more

Papers

Driven by 11 papers — median percentile 22. Top paper: “Thrombolysis for Wake-Up Stroke Versus Non–Wake-Up Unwitnessed Stroke: EOS Individual Patient Data Meta-Analysis”.

Thrombolysis for Wake-Up Stroke Versus Non–Wake-Up Unwitnessed Stroke: EOS Individual Patient Data Meta-Analysis

Stroke(2024)10.1161/strokeaha.123.043358
N/A
0.613DataRank · unranked
10 citations

Kaori Miwa, Ḱazunori Toyoda, Märit Jensen, Manabu Inoue, Sohei Yoshimura +42 more

Deep profiling of multiple ischemic lesions in a large, multi-center cohort: Frequency, spatial distribution, and associations to clinical characteristics

medRxiv(2022)10.1101/2022.07.01.22277062
Top 78%
0.104DataRank
Top 78%1 citations

Teresa Ullberg, Martin Bretzner, Sung‐Min Hong, Markus D. Schirmer, Robert W. Regenhardt +48 more

MRI Radiomic Signature of White Matter Hyperintensities Is Associated with Clinical Phenotypes

bioRxiv (Cold Spring Harbor Laboratory)(2021)10.1101/2021.01.24.427986
N/A
0DataRank · unranked
3 citations

Anna K. Bonkhoff, Markus D. Schirmer, Sung‐Min Hong, Adrian V. Dalca, Kathleen Donahue +51 more

Lesions in putative language and attention regions are linked to more severe strokes in patients with higher white matter hyperintensity burden

medRxiv(2021)10.1101/2021.11.05.21265496
N/A
0DataRank · unranked
2 citations

Sung‐Min Hong, Martin Bretzner, Markus D. Schirmer, Robert W. Regenhardt, Ethem Murat Arsava +52 more

Contribution of Common Genetic Variants to Risk of Early-Onset Ischemic Stroke

Neurology(2022)10.1212/wnl.0000000000201006
N/A
0DataRank · unranked
37 citations

Huichun Xu, Brady Gaynor, John W. Cole, Kristiina Rannikmäe, Tara M. Stanne +95 more

The relevance of rich club regions for functional outcome post‐stroke is enhanced in women

Human Brain Mapping(2022)10.1002/hbm.26159
N/A
0DataRank · unranked
7 citations

Markus D. Schirmer, Martin Bretzner, Sung‐Min Hong, Robert W. Regenhardt, Kathleen Donahue +46 more

Sex-specific lesion pattern of functional outcomes after stroke

Brain Communications(2022)10.1093/braincomms/fcac020
N/A
0DataRank · unranked
15 citations

Martin Bretzner, Sung‐Min Hong, Markus D. Schirmer, Alexander L. Cohen, Robert W. Regenhardt +53 more

The relevance of rich club regions for functional outcome post-stroke is enhanced in women

medRxiv(2022)10.1101/2022.06.28.22277020
N/A
0DataRank · unranked
0 citations

Markus D. Schirmer, Martin Bretzner, Sung‐Min Hong, Robert W. Regenhardt, Kathleen Donahue +46 more

Intravenous alteplase for stroke with unknown time of onset guided by advanced imaging: systematic review and meta-analysis of individual patient data

The Lancet(2020)10.1016/s0140-6736(20)32163-2
N/A
0DataRank · unranked
185 citations

Florent Boutitie, Henry Ma, Masatoshi Koga, Peter Ringleb, Lee H. Schwamm +93 more

Long-Term Risk of Stroke After Transient Ischemic Attack or Minor Stroke

JAMA(2025)10.1001/jama.2025.2033
N/A
0DataRank · unranked
27 citations

Vignan Yogendrakumar, Ronda Lun, Aravind Ganesh, Philip A. Barber, Vasileios-Arsenios Lioutas +55 more

Outcome after acute ischemic stroke is linked to sex-specific lesion patterns

Nature Communications(2021)10.1038/s41467-021-23492-3
N/A
0DataRank · unranked
107 citations

Markus D. Schirmer, Martin Bretzner, Sung‐Min Hong, Robert W. Regenhardt, Mikael Brudfors +52 more