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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2002 19
2003 36
2004 30
2005 36
2006 37
2007 43
2008 43
2009 57
2010 40
2011 69
2012 67
2013 89
2014 83
2015 69
2016 69
2017 60
2018 89
2019 81
2020 83
2021 75
2022 48
2023 77
2024 53
2025 55
2026 38

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1,311 results

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Page 1
Comparative Efficacy and Acceptability of 21 Antidepressant Drugs for the Acute Treatment of Adults With Major Depressive Disorder: A Systematic Review and Network Meta-Analysis.
Cipriani A, Furukawa TA, Salanti G, Chaimani A, Atkinson LZ, Ogawa Y, Leucht S, Ruhe HG, Turner EH, Higgins JPT, Egger M, Takeshima N, Hayasaka Y, Imai H, Shinohara K, Tajika A, Ioannidis JPA, Geddes JR. Cipriani A, et al. Among authors: ioannidis jpa. Focus (Am Psychiatr Publ). 2026 Apr;24(2):252-262. doi: 10.1176/appi.focus.26024115. Epub 2026 Apr 4. Focus (Am Psychiatr Publ). 2026. PMID: 42538894
Minimal detectable change of the Patient Health Questionnaire-9, Patient Health Questionnaire-8, and Patient Health Questionnaire-2: individual patient data meta-analysis.
Wang Y, Wu Y, González-Domínguez NP, Boruff JT, Levis B, Cuijpers P, Gilbody S, Harel D, Ioannidis JPA, Markham S, Patten SB, Vigod SN, Ziegelstein RC, Benedetti A, Thombs BD; DEPRESsion Screening Data (DEPRESSD) PHQ Collaboration. Wang Y, et al. Among authors: ioannidis jpa. BMJ. 2026 Jul 23;394:e100119. doi: 10.1136/bmj-2026-100119. BMJ. 2026. PMID: 42492960 Free article.
Cost of Retracted Articles to the NIH: a Living Analysis.
Sandoval-Lentisco A, Ioannidis JPA. Sandoval-Lentisco A, et al. Among authors: ioannidis jpa. medRxiv [Preprint]. 2026 Jul 7:2026.07.04.26357187. doi: 10.64898/2026.07.04.26357187. medRxiv. 2026. PMID: 42465960 Free PMC article. Preprint.
Balancing Immediate Surgical Risks with Deferred Benefits in Preventive Surgery.
Biemond MJ, Putter H, Bastiaannet E, van der Vorst JR, Matsumura JS, Hamming JF, Ioannidis JPA, Lindeman JHN. Biemond MJ, et al. Among authors: ioannidis jpa. Eur J Vasc Endovasc Surg. 2026 Jul 1:S1078-5884(26)00630-1. doi: 10.1016/j.ejvs.2026.06.049. Online ahead of print. Eur J Vasc Endovasc Surg. 2026. PMID: 42385841 Free article.
Development of a single‑item patient‑reported measure of treatment side‑effect burden in clinical trials of rheumatic and musculoskeletal diseases using stakeholder input and large language model refinement.
Berthelsen DB, Horgan B, Simon L, Ioannidis JPA, Goel N, Tugwell P, Balay-Dustrude E, Bartlett SJ, Bingham CO, Boers M, Bouillot C, Böhm P, Choy E, Cowern M, Dagsvik K, Djurtoft C, Furst DE, Haugegaard T, Hazlewood GS, Hoens AM, Jørgensen TS, Kelly SE, Kruzikas D, Musaus J, Richards P, Shea BJ, Strand V, Thomas M, Torralba K, Voshaar M, Weinbrecht-Mischkewitz M, Woodworth TG, Wright G, Flurey C, Christensen R; OMERACT Safety Working Group. Berthelsen DB, et al. Among authors: ioannidis jpa. Semin Arthritis Rheum. 2026 Aug;79:153026. doi: 10.1016/j.semarthrit.2026.153026. Epub 2026 Jun 19. Semin Arthritis Rheum. 2026. PMID: 42364594 Free article.
SPIRIT 2025 statement: updated guideline for protocols of randomised trials.
Chan AW, Boutron I, Hopewell S, Moher D, Schulz KF, Collins GS, Tunn R, Aggarwal R, Berkwits M, Berlin JA, Bhandari N, Butcher NJ, Campbell MK, Chidebe RCW, Elbourne DR, Farmer AJ, Fergusson DA, Golub RM, Goodman SN, Hoffmann TC, Ioannidis JPA, Kahan BC, Knowles RL, Lamb SE, Lewis S, Loder E, Offringa M, Ravaud P, Richards DP, Rockhold FW, Schriger DL, Siegfried NL, Staniszewska S, Taylor RS, Thabane L, Torgerson DJ, Vohra S, White IR, Hróbjartsson A. Chan AW, et al. Among authors: ioannidis jpa. Lancet. 2025 May 17;405(10491):e19-e27. doi: 10.1016/S0140-6736(25)00770-6. Epub 2025 Apr 28. Lancet. 2025. PMID: 42290521 Review.
Comparison of the accuracy of latent factor and sum scoring of the Hospital Anxiety and Depression Scale to screen for major depression: An individual participant data meta-analysis.
Zhang J, Fischer F, Falk C, Wu Y, Alkan A, Sun Y, González-Domínguez NP, Boruff JT, Cuijpers P, Gilbody S, Harel D, Ioannidis JPA, Levis B, Markham S, Patten SB, Takwoingi Y, Ziegelstein RC, Benedetti A, Thombs BD; DEPRESSD HADS Collaboration. Zhang J, et al. Among authors: ioannidis jpa. J Affect Disord. 2026 Nov 1;412:122051. doi: 10.1016/j.jad.2026.122051. Epub 2026 May 30. J Affect Disord. 2026. PMID: 42217642 Free article.
How does prior infection and vaccination relate to the risk of incident SARS-CoV-2 infection/reinfection? A prospective cohort study among nine clinical sites in the USA, February 2021 to January 2023.
Judge A, Beidelman ET, Allison DB, Dickinson S, Gadde KM, Golzarri Arroyo L, Ioannidis JP, Macagno AL, Macy JT, Maki KC, Perlman S, Ricciardi MJ, Rosenberg M, Ludema C. Judge A, et al. Among authors: ioannidis jp. BMJ Open. 2026 May 12;16(5):e112893. doi: 10.1136/bmjopen-2025-112893. BMJ Open. 2026. PMID: 42129996 Free PMC article.
Examining predictors of scale-up penalty in preliminary studies of health behavior interventions and subsequent larger trials: a meta-epidemiological review of diverse fields.
von Klinggraeff L, Pfledderer CD, Burkart S, Ramey K, Smith M, McLain AC, Armstrong B, Weaver RG, Okely A, Lubans D, Ioannidis JPA, Jago R, Turner-McGrievy G, Thrasher J, Li X, Beets MW. von Klinggraeff L, et al. Among authors: ioannidis jpa. Pilot Feasibility Stud. 2026 May 13;12(1):96. doi: 10.1186/s40814-026-01836-4. Pilot Feasibility Stud. 2026. PMID: 42129912 Free PMC article. Review.
Validity and utility of a single-item patient-reported measure of treatment-related bother in rheumatoid arthritis: A cross-sectional OMERACT study.
Berthelsen DB, Haugegaard T, Kamso MM, Tugwell P, Simon LS, Ioannidis JPA, Flurey C, Boers M, Voshaar M, Richards P, Shea B, Furst DE, Singh JA, Stevens R, Woodworth T, Bartlett SJ, Hazlewood GS, Christensen R; OMERACT Safety Working Group. Berthelsen DB, et al. Among authors: ioannidis jpa. Semin Arthritis Rheum. 2026 Jun;78:152983. doi: 10.1016/j.semarthrit.2026.152983. Epub 2026 Apr 19. Semin Arthritis Rheum. 2026. PMID: 42034888 Free article.
Guidance for umbrella reviews of observational studies: A scoping review.
Zhou C, Fabiano N, Gupta A, Wong S, Cobey KD, Moher D, Ebrahimzadeh S, Ng JY, Dragioti E, Shin JI, Radua J, Cortese S, Shea B, Veronese N, Hartling L, Pollock M, Papatheodorou S, Ioannidis JPA, Solmi M. Zhou C, et al. Among authors: ioannidis jpa. JCPP Adv. 2025 Aug 1;6(1):e70017. doi: 10.1002/jcv2.70017. eCollection 2026 Mar. JCPP Adv. 2025. PMID: 41815760 Free PMC article.
Benefits and harms of ADHD interventions: umbrella review and platform for shared decision making.
Gosling CJ, Garcia-Argibay M, De Prisco M, Arrondo G, Ayrolles A, Antoun S, Caparos S, Catalán A, Ellul P, Dobrosavljevic M, Farhat LC, Fico G, Eudave L, Groenman AP, Højlund M, Jurek L, Nourredine M, Oliva V, Parlatini V, Psyllou C, Salazar-de-Pablo G, Tomlinson A, Westwood SJ, Cipriani A, Correll CU, Yon DK, Larsson H, Ostinelli EG, Shin JI, Fusar-Poli P, Ioannidis JPA, Radua J, Solmi M, Delorme R, Cortese S. Gosling CJ, et al. Among authors: ioannidis jpa. BMJ. 2025 Nov 26;391:e085875. doi: 10.1136/bmj-2025-085875. BMJ. 2025. PMID: 41297970 Free PMC article.
CONSORT 2025 statement: updated guideline for reporting randomized trials: a Korean translation.
Hopewell S, Chan AW, Collins GS, Hróbjartsson A, Moher D, Schulz KF, Tunn R, Aggarwal R, Berkwits M, Berlin JA, Bhandari N, Butcher NJ, Campbell MK, Chidebe RCW, Elbourne D, Farmer A, Fergusson DA, Golub RM, Goodman SN, Hoffmann TC, Ioannidis JPA, Kahan BC, Knowles RL, Lamb SE, Lewis S, Loder E, Offringa M, Ravaud P, Richards DP, Rockhold FW, Schriger DL, Siegried NL, Staniszewska S, Taylor RS, Thabane L, Torgerson D, Vohra S, White IR, Boutron I. Hopewell S, et al. Among authors: ioannidis jpa. Ewha Med J. 2025 Jul;48(3):e50. doi: 10.12771/emj.2025.00409. Epub 2025 Jul 2. Ewha Med J. 2025. PMID: 40739975 Free PMC article. English.
1,311 results