PubMed Central (PMC) Search Page
Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 2006 | 35 |
| 2007 | 41 |
| 2008 | 75 |
| 2009 | 123 |
| 2010 | 123 |
| 2011 | 417 |
| 2012 | 246 |
| 2013 | 717 |
| 2014 | 514 |
| 2015 | 991 |
| 2016 | 610 |
| 2017 | 632 |
| 2018 | 715 |
| 2019 | 816 |
| 2020 | 1033 |
| 2021 | 969 |
| 2022 | 1065 |
| 2023 | 822 |
| 2024 | 856 |
| 2025 | 678 |
| 2026 | 557 |
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Publication date
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Publication stage
These filters represent the three primary types of content included in the PMC archive: 1) content published in a scholarly journal 2) peer-reviewed author manuscripts accepted for publication in a journal and 3) preprint versions of articles collected through the NIH Preprint Pilot, made public prior to peer review
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Collections
The PMC Open Access Subset includes journal articles and preprints that are made available under license terms that allow reuse. Historical back issues refers to digitized content from print journals made available in PMC through the Biomedical Journal Digitization Projects.
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"Trials"[Journal]
The embargo is the time during which the publisher retains exclusive rights to distribute articles. Those articles are made freely available on the PMC website after the embargo period has ended. Citations for articles under an embargo period will still display in the PMC results list by default. Choose “Exclude” to prevent embargoed articles from displaying in your results.
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Design, reporting, and research focus of neurology and psychiatry drug trials (2020-2023): a registry-based meta-epidemiological study using ClinicalTrials.gov and NLP.
- Doneva SE, Sick B, Ellendorff TR, Goldman JP, Reich DS, Hemkens LG, Schneider G, Ineichen BV.
- Trials. 2026 Jul 28;27(1):622. doi: 10.1186/s13063-026-09909-8.
- PMCID: PMC13692975
Doneva SE, et al.Trials. 2026.PMCID: PMC13692975 -
Addressing the challenges of including older people with osteoarthritis and multi-morbidity in digitally enabled trials: a mixed methods Study Within a Project (TIPTOE SWAP).
- Shepherd V, Prout H, Button K, Brookes-Howells L, Randell E, Lowe R, Nash S, Deere R, Busse M.
- Trials. 2026 Jul 27;27(1):620. doi: 10.1186/s13063-026-09907-w.
- PMCID: PMC13685351
Shepherd V, et al.Trials. 2026.PMCID: PMC13685351 -
Accelerated intermittent theta burst stimulation (iTBS) for the upper limb recovery after subacute stroke (ATLAS): study protocol for a multicenter randomized controlled trial.
- Yang H, Shu T, Duan C, Chen L, Zhang X, Xu X, Chen Y, Chen H, Hou J.
- Trials. 2026 Jul 24;27(1):619. doi: 10.1186/s13063-026-09857-3.
- PMCID: PMC13685232
Yang H, et al.Trials. 2026.PMCID: PMC13685232 -
Crystalloid vs colloid for Hemodynamics during Anesthesia INduction in TAVR patients (CHAIN-T): study protocol for a randomized controlled trial.
- Tuo X, Wang F, Chen Y, Chen M, Lu Z.
- Trials. 2026 Jul 24;27(1):616. doi: 10.1186/s13063-026-09906-x.
- PMCID: PMC13685197
Tuo X, et al.Trials. 2026.PMCID: PMC13685197 -
Randomised, placebo-controlled study to assess the safety and efficacy of Enterosgel® in the treatment of functional abdominal pain in children and young people (ENTOPIC): study protocol for a clinical trial.
- Howell CA, Nair MV, Auth MK, Spray C, Basude D, Dodd M, Markaryan E, Hnatič R, Allen SJ.
- Trials. 2026 Jul 25;27(1):618. doi: 10.1186/s13063-026-09913-y.
- PMCID: PMC13685227
Howell CA, et al.Trials. 2026.PMCID: PMC13685227 -
Preoperative antibiotics for mild or moderate acute cholecystitis (POMMAC): study protocol for a non-inferiority, open-label, randomized controlled trial.
- Terho P, Sallinen V, Lampela H, Koppatz H, Sammalkorpi H, Mentula P.
- Trials. 2026 Jul 25;27(1):617. doi: 10.1186/s13063-026-09917-8.
- PMCID: PMC13685358
Terho P, et al.Trials. 2026.PMCID: PMC13685358 -
Intracluster correlation coefficients for neonatal trials: an analysis of national population level clinical data.
- Jawad S, Prevost AT, Gale C.
- Trials. 2026 Jul 23;27(1):614. doi: 10.1186/s13063-026-09893-z.
- PMCID: PMC13679098
Jawad S, et al.Trials. 2026.PMCID: PMC13679098 -
Gut Regulated Associations of Neuronal Signalling in High Blood Pressure (GRAINS-BP): a double-blinded randomised crossover placebo-controlled trial.
- Welathanthree M, Snelson M, Rim D, McCarthy B, Sesa-Ashton G, Farmer DGS, Yang C, Lu J, Cheong PTT, Pase MP, McCaffrey T, Ha FJ, Dhital S, Davis E, Lambert E, Macefield VG, Marques FZ, R Muralitharan R.
- Trials. 2026 Jul 22;27(1):613. doi: 10.1186/s13063-026-09911-0.
- PMCID: PMC13679180
Welathanthree M, et al.Trials. 2026.PMCID: PMC13679180 -
Correction: Efficacy of five-step shoulder manipulation for rotator cuff-related shoulder pain: protocol for a multicenter randomized controlled trial.
- Liu S, Liu JT, Chen L, Fan TY, Cui XJ, Cheng SD, Chen YJ, Shi Q, Xue CC, Li XF.
- Trials. 2026 Oct 18;27(1):612. doi: 10.1186/s13063-026-10049-2.
- PMCID: PMC13679025
Liu S, et al.Trials. 2026.PMCID: PMC13679025 -
Correction: Protocol for a randomized controlled trial comparing saturated and unsaturated fat sources of a ketogenic diet (KETO-IM) investigating cardiovascular, inflammatory and immune function outcomes in adults living with overweight and prediabetes or type 2 diabetes in Edmonton, Canada.
- Fulton JL, Gartke T, Blanco Cervantes P, Mojibi Y, Makarowski A, Mereu L, Yeung RO, Richard C, Chan CB.
- Trials. 2026 Oct 14;27(1):608. doi: 10.1186/s13063-026-10050-9.
- PMCID: PMC13670854
Fulton JL, et al.Trials. 2026.PMCID: PMC13670854