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

Joshua R. Freeman

National Institutes of Health

ORCID: 0000-0001-7483-7848

Also affiliated with Swedish Covenant Hospital, University of Massachusetts Amherst, Swedish American Hospital, ETH Zurich, National Cancer Institute, Eunice Kennedy Shriver National Institute of Child Health and Human Development

PsychologyNeuroscienceMedicine

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 3%percentile
0.997Author 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.

Associations between actigraphy-measured sleep duration, continuity, and timing with mortality in the UK Biobank

SLEEP(2023)10.1093/sleep/zsad312
Top 20%
0.997DataRank
Top 20%25 citations

Joshua R. Freeman, D. Russ, Jonas S. Almeida, Marissa Shams‐White, Shreya Patel +7 more

Papers

Driven by 16 papers — median percentile 80. Top paper: “Associations between actigraphy-measured sleep duration, continuity, and timing with mortality in the UK Biobank”.

Associations between actigraphy-measured sleep duration, continuity, and timing with mortality in the UK Biobank

SLEEP(2023)10.1093/sleep/zsad312
Top 20%
0.997DataRank
Top 20%25 citations

Joshua R. Freeman, D. Russ, Jonas S. Almeida, Marissa Shams‐White, Shreya Patel +7 more

Cannabis use while trying to conceive: a prospective cohort study evaluating associations with fecundability, live birth and pregnancy loss

Human Reproduction(2020)10.1093/humrep/deaa355
N/A
0.962DataRank · unranked
36 citations

Kerry S.J. Flannagan, Jeannie G. Radoc, Lindsey A. Sjaarda, Jessica R. Zolton, Torri D. Metz +12 more

Physical activity and incidence of subclinical and clinical pregnancy loss: a secondary analysis in the effects of aspirin in gestation and reproduction randomized trial

Fertility and Sterility(2020)10.1016/j.fertnstert.2019.10.027
N/A
0.586DataRank · unranked
7 citations

Brian W. Whitcomb, Joshua R. Freeman, Sunni L. Mumford, Lindsey A. Sjaarda, Neil J. Perkins +5 more

Preconception sleep duration, sleep timing, and shift work in association with fecundability and live birth among women with a history of pregnancy loss

Fertility and Sterility(2022)10.1016/j.fertnstert.2022.10.026
N/A
0.502DataRank · unranked
11 citations

Brian W. Whitcomb, Elizabeth R. Bertone‐Johnson, Laura B. Balzer, Louise O’Brien, Galit Levi Dunietz +6 more

The role of maternal preconception vitamin D status in human offspring sex ratio

Nature Communications(2021)10.1038/s41467-021-23083-2
N/A
0.442DataRank · unranked
18 citations

Keewan Kim, Carrie J. Nobles, Enrique F. Schisterman, Karen C. Schliep, Neil J. Perkins +9 more

Sleep and Risk of Pancreatic Cancer in the UK Biobank

Cancer Epidemiology Biomarkers & Prevention(2024)10.1158/1055-9965.epi-23-0983
N/A
0.345DataRank · unranked
9 citations

Pedro F. Saint‐Maurice, Ting Zhang, Charles E. Matthews, Rachael Z. Stolzenberg‐Solomon, Joshua R. Freeman

Preconception sleep, pregnancy loss, and adverse pregnancy outcomes among women with a history of pregnancy loss

Human Reproduction(2025)10.1093/humrep/deaf074
N/A
0.208DataRank · unranked
3 citations

Brian W. Whitcomb, Elizabeth R. Bertone‐Johnson, Louise M. O’Brien, Galit Levi Dunietz, Alexandra Purdue‐Smithe +5 more

Characterizing ActiGraph’s Idle Sleep Mode in Free-Living Assessments of Physical Behavior

Journal for the Measurement of Physical Behaviour(2024)10.1123/jmpb.2023-0038
N/A
0DataRank · unranked
1 citations

Robert J. Brychta, Joshua R. Freeman, Pedro F. Saint‐Maurice, Charles E. Matthews, Asuka Ishihara +2 more

Monitoring sleep duration, timing, and continuity among US youth and adults in NHANES using actigraphy

Sleep Health(2025)10.1016/j.sleh.2025.10.008
N/A
0DataRank · unranked
2 citations

Jennifer Zink, Marissa Shams‐White, Dana L. Wolff‐Hughes, Wayne R. Lawrence, Samuel R. LaMunion +7 more

Sleep characteristics in association with risk of sporadic anovulation among eumenorrheic women

Chronobiology International(2025)10.1080/07420528.2025.2481165
N/A
0DataRank · unranked
0 citations

Brian W. Whitcomb, Elizabeth R. Bertone‐Johnson, Louise M. O’Brien, Galit Levi Dunietz, Alexandra Purdue‐Smithe +5 more

Is Alcohol Consumption Associated With Risk of Early Menopause?

American Journal of Epidemiology(2021)10.1093/aje/kwab182
N/A
0DataRank · unranked
20 citations

Brian W. Whitcomb, Alexandra Purdue‐Smithe, JoAnn E. Manson, Christine R. Langton, Susan E. Hankinson +3 more

Association of Leisure Time Physical Activity Types and Risks of All-Cause, Cardiovascular, and Cancer Mortality Among Older Adults

JAMA Network Open(2022)10.1001/jamanetworkopen.2022.28510
N/A
0DataRank · unranked
106 citations

Charles E. Matthews, Joshua R. Freeman, Jessica Gorzelitz, Hyokyoung G. Hong, Linda M. Liao +5 more

The Role of Maternal Preconception Adiposity in Human Offspring Sex and Sex Ratio

American Journal of Epidemiology(2022)10.1093/aje/kwac209
N/A
0DataRank · unranked
3 citations

Alexandra Purdue‐Smithe, Lindsey A. Sjaarda, Brandie D. Taylor, Joshua R. Freeman, Neil J. Perkins +4 more

Actigraphy-derived measures of sleep and risk of prostate cancer in the UK Biobank

JNCI Journal of the National Cancer Institute(2023)10.1093/jnci/djad210
N/A
0DataRank · unranked
13 citations

Pedro F. Saint‐Maurice, Eleanor L. Watts, Steven C. Moore, Marissa Shams‐White, Dana L. Wolff‐Hughes +7 more

Variability in Sleep Duration and Biomarkers of Cardiovascular Disease Across the Menstrual Cycle

American Journal of Epidemiology(2023)10.1093/aje/kwad060
N/A
0DataRank · unranked
12 citations

Kerby Shedden, Kara A. Michels, Ronald D. Chervin, Xiru Lyu, Joshua R. Freeman +6 more

0816 Actigraphy-Measured Sleep Timing and Risk of Breast Cancer in the UK Biobank

SLEEP(2023)10.1093/sleep/zsad077.0816
N/A
0DataRank · unranked
1 citations

Pedro F. Saint‐Maurice, Eleanor L. Watts, Steve Moore, Marissa Shams‐White, Dana L. Wolff‐Hughes +4 more