Integration of evidence from multiple meta-analyses: a primer on umbrella reviews, treatment networks and multiple treatments meta-analyses
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Meta-analysis is an important research design for appraising evidence and guiding medical practice and health policy. [1][1] Meta-analyses draw strength from combining data from many studies. However, even if perfectly done with perfect data, a single meta-analysis that addresses 1 treatment
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Evidence of outcomes was classified into four categories following evidence classification criteria.
“Additionally, we classified evidence of outcomes into four categories following the evidence classification criteria: class I (convincing evidence), class II (highly suggestive evidence), class III (suggestive evidence), class IV (weak evidence), and NS (non-significant).”
From Dietary sugar consumption and health: umbrella review (2023) · cites this paper as [46]
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Schulz (1995) · doi:10.1001/jama.1995.03520290060030 · Cited by 5,634 · see citing works
Moher, D., Pham, B., Jones, A., Cook, D. J., Jadad, A. R., Moher, M., Tugwell, P., & Klassen, T. P. (1998) · The Lancet · doi:10.1016/s0140-6736(98)01085-x · Cited by 3,560 · see citing works
Assessing the quality of controlled clinical trials
Jüni, P., Altman, D. G., & Egger, M. (2001) · BMJ · doi:10.1136/bmj.323.7303.42 · Cited by 3,309 · see citing works
Wood, L., Egger, M., Gluud, L. L., Schulz, K. F., Jüni, P., Altman, D. G., Gluud, C., Martin, R. M., Wood, A. J. G., & Sterne, J. A. C. (2008) · BMJ · doi:10.1136/bmj.39465.451748.ad · Cited by 2,538 · see citing works
Kirsch, I., Deacon, B. J., Huedo-Medina, T. B., Scoboria, A., Moore, T. J., & Johnson, B. T. (2008) · PLoS Medicine · doi:10.1371/journal.pmed.0050045 · Cited by 2,442 · see citing works
Gluud, L. L., Villumsen, J., & Gluud, C. N. (2001) · Annals of Internal Medicine · doi:10.7326/0003-4819-135-11-200112040-00010 · Cited by 2,262 · see citing works
Empirical evidence of design-related bias in studies of diagnostic tests.
Lijmer, J. G. (1999) · JAMA · doi:10.1001/jama.282.11.1061 · Cited by 1,861 · see citing works
Systematic meta-analyses of Alzheimer disease genetic association studies: the AlzGene database
Bertram, L., McQueen, M. B., Mullin, K., Blacker, D., & Tanzi, R. E. (2007) · Nature Genetics · doi:10.1038/ng1934 · Cited by 1,857 · see citing works
Chan, A.-W., Hróbjartsson, A., Haahr, M. T., Gøtzsche, P. C., & Altman, D. G. (2004) · JAMA · doi:10.1001/jama.291.20.2457 · Cited by 1,845 · see citing works
Simultaneous comparison of multiple treatments: Combining direct and indirect evidence.
Caldwell, D. M., Ades, A. E., & Higgins, J. P. T. (2005) · BMJ · doi:10.1136/bmj.331.7521.897 · Cited by 1,600 · see citing works
Why Most Discovered True Associations Are Inflated
Ioannidis, J. P. A. (2008) · Epidemiology · doi:10.1097/ede.0b013e31818131e7 · Cited by 1,495 · see citing works
Self-citationOutcomes associated with drug-eluting and bare-metal stents: a collaborative network meta-analysis
Stettler, C., Wandel, S., Allemann, S., Kastrati, A., Morice, M., Schömig, A., Pfisterer, M. E., Stone, G. W., Leon, M. B., de Lezo, J. S., et al. (2007) · The Lancet · doi:10.1016/s0140-6736(07)61444-5 · Cited by 1,429 · see citing works
Competing interests: none declared.
Hirsch, L. (2006) · Cited by 1,396 · see citing works
Network meta‐analysis for indirect treatment comparisons
Lumley, T. (2002) · Statistics in Medicine · doi:10.1002/sim.1201 · Cited by 1,206 · see citing works
Evaluation of networks of randomized trials
Salanti, G., Higgins, J. P., Ades, A., & Ioannidis, J. P. (2008) · Statistical Methods in Medical Research · doi:10.1177/0962280207080643 · Cited by 1,078 · see citing works
Self-citationAllen, N. C., Bagade, S., McQueen, M. B., Ioannidis, J. P. A., Kavvoura, F. K., Khoury, M. J., Tanzi, R. E., & Bertram, L. (2008) · Nature Genetics · doi:10.1038/ng.171 · Cited by 1,054 · see citing works
Self-citationSong, F., Altman, D. G., Glenny, A., & Deeks, J. J. (2003) · BMJ · doi:10.1136/bmj.326.7387.472 · Cited by 944 · see citing works
Shang, A., Huwiler, K., Nartey, L., Jüni, P., Dörig, S., Sterne, J. A. C., Pewsner, D., & Egger, M. (2005) · The Lancet · doi:10.1016/s0140-6736(05)67177-2 · Cited by 836 · see citing works
Assessing Evidence Inconsistency in Mixed Treatment Comparisons
Lu, G., & Ades, A. E. (2006) · Journal of the American Statistical Association · doi:10.1198/016214505000001302 · Cited by 756 · see citing works
An exploratory test for an excess of significant findings
Ioannidis, J. P., & Trikalinos, T. A. (2007) · Clinical Trials · doi:10.1177/1740774507079441 · Cited by 751 · see citing works
Self-citationIndirect comparisons of competing interventions
Glenny, A., Altman, D. G., Song, F., Sakarovitch, C., Deeks, J. J., D’Amico, R., Bradburn, M. J., & Eastwood, A. J. (2005) · Health Technology Assessment · doi:10.3310/hta9260 · Cited by 682 · see citing works
Evidence of bias and variation in diagnostic accuracy studies
Rutjes, A. W., Reitsma, J. B., Nisio, M. D., Smidt, N., van Rijn, J. C., & Bossuyt, P. M. (2006) · Canadian Medical Association Journal · doi:10.1503/cmaj.050090 · Cited by 613 · see citing works
Chan, A.-W., & Altman, D. G. (2005) · BMJ · doi:10.1136/bmj.38356.424606.8f · Cited by 613 · see citing works
Multiple-Treatments Meta-analysis of Chemotherapy and Targeted Therapies in Advanced Breast Cancer
Mauri, D. N., Polyzos, N. P., Salanti, G., Pavlidis, N. A., & Ioannidis, J. P. A. (2008) · JNCI Journal of the National Cancer Institute · doi:10.1093/jnci/djn414 · Cited by 524 · see citing works
Self-citationRelative Citation Impact of Various Study Designs in the Health Sciences
Patsopoulos, N. A. (2005) · JAMA · doi:10.1001/jama.293.19.2362 · Cited by 498 · see citing works
Effectiveness of smoking cessation therapies: a systematic review and meta-analysis
Wu, P., Wilson, K., Dimoulas, P., & Mills, E. J. (2006) · BMC Public Health · doi:10.1186/1471-2458-6-300 · Cited by 484 · see citing works
Balk, E. M. (2002) · JAMA · doi:10.1001/jama.287.22.2973 · Cited by 478 · see citing works
Reasons or excuses for avoiding meta-analysis in forest plots
Ioannidis, J. P. A., Patsopoulos, N. A., & Rothstein, H. R. (2008) · BMJ · doi:10.1136/bmj.a117 · Cited by 457 · see citing works
Self-citationHeres, S., Davis, J. M., Maino, K., Jetzinger, E., Kissling, W., & Leucht, S. (2006) · American Journal of Psychiatry · doi:10.1176/appi.ajp.163.2.185 · Cited by 447 · see citing works
Outcome reporting bias in randomized trials funded by the Canadian Institutes of Health Research
Chan, A.-W. (2004) · Canadian Medical Association Journal · doi:10.1503/cmaj.1041086 · Cited by 444 · see citing works
An evidence based approach to individualising treatment
Glasziou, P., & Irwig, L. (1995) · BMJ · doi:10.1136/bmj.311.7016.1356 · Cited by 389 · see citing works
Sterne, J. A. C., Jüni, P., Schulz, K. F., Altman, D. G., Bartlett, C., & Egger, M. (2002) · Statistics in Medicine · doi:10.1002/sim.1184 · Cited by 382 · see citing works
Pharmacotherapies for smoking cessation: a meta-analysis of randomized controlled trials
Eisenberg, M., Filion, K., Yavin, D., Belisle, P., Mottillo, S., Joseph, L., Gervais, A., O'Loughlin, J., Paradis, G., Rinfret, S., et al. (2008) · Canadian Medical Association Journal · doi:10.1503/cmaj.070256 · Cited by 338 · see citing works
Stettler, C., Allemann, S., Wandel, S., Kastrati, A., Morice, M. C., Schomig, A., Pfisterer, M. E., Stone, G. W., Leon, M. B., Lezo, J. S. D., et al. (2008) · BMJ · doi:10.1136/bmj.a1331 · Cited by 320 · see citing works
Effectiveness of antidepressants: an evidence myth constructed from a thousand randomized trials?
Ioannidis, J. P. (2008) · Philosophy, Ethics, and Humanities in Medicine · doi:10.1186/1747-5341-3-14 · Cited by 253 · see citing works
Self-citationBero, L., Oostvogel, F., Bacchetti, P., & Lee, K. (2007) · PLoS Medicine · doi:10.1371/journal.pmed.0040184 · Cited by 249 · see citing works
Almost all articles on cancer prognostic markers report statistically significant results
Kyzas, P., Denaxa-Kyza, D., & Ioannidis, J. P. A. (2007) · European Journal of Cancer · doi:10.1016/j.ejca.2007.08.030 · Cited by 231 · see citing works
Self-citationExploring the Geometry of Treatment Networks
Salanti, G., Kavvoura, F. K., & Ioannidis, J. P. A. (2008) · Annals of Internal Medicine · doi:10.7326/0003-4819-148-7-200804010-00011 · Cited by 229 · see citing works
Self-citationSong, F., Harvey, I. M., & Lilford, R. J. (2007) · Journal of Clinical Epidemiology · doi:10.1016/j.jclinepi.2007.06.006 · Cited by 195 · see citing works
Evolution of treatment effects over time: Empirical insight from recursive cumulative metaanalyses
Ioannidis, J. P. A., & Lau, J. (2001) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.98.3.831 · Cited by 190 · see citing works
Self-citationGolfinopoulos, V., Salanti, G., Pavlidis, N. A., & Ioannidis, J. P. A. (2007) · The Lancet Oncology · doi:10.1016/s1470-2045(07)70281-4 · Cited by 159 · see citing works
Self-citationAssociation between pharmaceutical involvement and outcomes in breast cancer clinical trials.
Peppercorn, J., Blood, E., Winer, E., & Partridge, A. (2007) · Cancer · doi:10.1002/cncr.22528 · Cited by 123 · see citing works
Lam, S., & Owen, A. (2007) · BMJ · doi:10.1136/bmj.39343.511389.be · Cited by 116 · see citing works
Kwartz, A. J., Henson, D. B., Harper, R. A., Spencer, A. F., & McLeod, D. (2005) · Health Technology Assessment · doi:10.3310/hta9460 · Cited by 112 · see citing works
What are the implications of optimism bias in clinical research?
Chalmers, I., & Matthews, R. (2006) · The Lancet · doi:10.1016/s0140-6736(06)68153-1 · Cited by 95 · see citing works
Indirect comparisons: the mesh and mess of clinical trials
Ioannidis, J. P. A. (2006) · The Lancet · doi:10.1016/s0140-6736(06)69615-3 · Cited by 94 · see citing works
Self-citationKyzas, P., Denaxa-Kyza, D., & Ioannidis, J. P. A. (2007) · JNCI Journal of the National Cancer Institute · doi:10.1093/jnci/djk032 · Cited by 94 · see citing works
Self-citationMacfadyen, C. A., Acuin, J. M., & Gamble, C. L. (2005) · Cochrane Database of Systematic Reviews · doi:10.1002/14651858.cd004618.pub2 · Cited by 87 · see citing works
Siersma, V., Als-Nielsen, B. E. T., Chen, W., Hilden, J., Gluud, L. L., & Gluud, C. N. (2006) · Statistics in Medicine · doi:10.1002/sim.2752 · Cited by 84 · see citing works
Availability of large-scale evidence on specific harms from systematic reviews of randomized trials.
Papanikolaou, P. N., & Ioannidis, J. P. A. (2004) · The American Journal of Medicine · doi:10.1016/j.amjmed.2004.04.026 · Cited by 79 · see citing works
Self-citationPerfect Study, Poor Evidence: Interpretation of Biases Preceding Study Design
Ioannidis, J. P. A. (2008) · Seminars in Hematology · doi:10.1053/j.seminhematol.2008.04.010 · Cited by 72 · see citing works
Self-citationMoe, R. H., Haavardsholm, E. A., Christie, A., Jamtvedt, G., Dahm, K. T., & Hagen, K. B. (2007) · Physical Therapy · doi:10.2522/ptj.20070042 · Cited by 51 · see citing works
Kavvoura, F. K., McQueen, M. B., Khoury, M. J., Tanzi, R. E., Bertram, L., & Ioannidis, J. P. A. (2008) · American Journal of Epidemiology · doi:10.1093/aje/kwn206 · Cited by 47 · see citing works
Self-citationTHIERS, B. H. (2008) · Yearbook of Dermatology and Dermatologic Surgery · doi:10.1016/s0093-3619(08)70884-0 · Cited by 14 · see citing works
Completeness of Safety Reporting in Randomized Trials: An Evaluation of 7 Medical Areas
Ioannidis, J. P. A., & Lau, J. (2001) · JAMA · doi:10.1001/jama.285.4.437 · Cited by 3 · see citing works
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Hutton, B., Salanti, G., Caldwell, D. M., Chaimani, A., Schmid, C. H., Cameron, C., Ioannidis, J. P. A., Straus, S., Thorlund, K., Jansen, J. P., et al. (2015) · Annals of Internal Medicine · doi:10.7326/m14-2385 · Cited by 8,269 · see citing works
Self-citationSalanti, G., Ades, A. E., & Ioannidis, J. P. A. (2011) · Journal of Clinical Epidemiology · doi:10.1016/j.jclinepi.2010.03.016 · Cited by 3,766 · see citing works
Self-citationConsistency and inconsistency in network meta-analysis: concepts and models for multi-arm studies
Higgins, J. P. T., Jackson, D., Barrett, J. K., Lu, G., Ades, A. E., & White, I. R. (2012) · Research Synthesis Methods · doi:10.1002/jrsm.1044 · Cited by 2,098 · see citing works
Physical Activity and Incident Depression: A Meta-Analysis of Prospective Cohort Studies
Schuch, F. B., Vancampfort, D., Firth, J., Rosenbaum, S., Ward, P. B., Silva, E. S., Hallgren, M., Ponce De Leon, A., Dunn, A. L., Deslandes, A. C., et al. (2018) · American Journal of Psychiatry · doi:10.1176/appi.ajp.2018.17111194 · Cited by 1,763 · see citing works
Theodoratou, E., Tzoulaki, I., Zgaga, L., & Ioannidis, J. P. A. (2014) · BMJ · doi:10.1136/bmj.g2035 · Cited by 956 · see citing works
Self-citationGates, M., Gates, A., Pieper, D., Fernandes, R. M., Tricco, A. C., Moher, D., Brennan, S. E., Li, T., Pollock, M., Lunny, C., et al. (2022) · BMJ · doi:10.1136/bmj-2022-070849 · Cited by 856 · see citing works
Adiposity and cancer at major anatomical sites: umbrella review of the literature
Kyrgiou, M., Kalliala, I., Markozannes, G., Gunter, M. J., Paraskevaidis, E., Gabra, H., Martin-Hirsch, P., & Tsilidis, K. K. (2017) · BMJ · doi:10.1136/bmj.j477 · Cited by 803 · see citing works
Demystifying trial networks and network meta-analysis
Mills, E. J., Thorlund, K., & Ioannidis, J. P. A. (2013) · BMJ · doi:10.1136/bmj.f2914 · Cited by 742 · see citing works
Self-citationCupp, M. A., Cariolou, M., Tzoulaki, I., Aune, D., Evangelou, E., & Berlanga-Taylor, A. J. (2020) · BMC Medicine · doi:10.1186/s12916-020-01817-1 · Cited by 697 · see citing works
Risk factors for type 2 diabetes mellitus: An exposure-wide umbrella review of meta-analyses
Bellou, V., Belbasis, L., Tzoulaki, I., & Evangelou, E. (2018) · PLOS ONE · doi:10.1371/journal.pone.0194127 · Cited by 713 · see citing works
Network meta-analysis: application and practice using Stata
Shim, S., Yoon, B.-H., Shin, I.-S., & Bae, J.-M. (2017) · Epidemiology and Health · doi:10.4178/epih.e2017047 · Cited by 656 · see citing works
What causes psychosis? An umbrella review of risk and protective factors
Radua, J., Ramella‐Cravaro, V., Ioannidis, J. P. A., Reichenberg, A., Phiphopthatsanee, N., Amir, T., Yenn Thoo, H., Oliver, D., Davies, C., Morgan, C., et al. (2018) · World Psychiatry · doi:10.1002/wps.20490 · Cited by 553 · see citing works
Self-citationDietary fiber and health outcomes: an umbrella review of systematic reviews and meta-analyses
Veronese, N., Solmi, M., Caruso, M. G., Giannelli, G., Osella, A. R., Evangelou, E., Maggi, S., Fontana, L., Stubbs, B., & Tzoulaki, I. (2018) · The American Journal of Clinical Nutrition · doi:10.1093/ajcn/nqx082 · Cited by 536 · see citing works
Goldberg, S. B., Riordan, K. M., Sun, S., & Davidson, R. J. (2022) · Perspectives on Psychological Science · doi:10.1177/1745691620968771 · Cited by 520 · see citing works
Catalá-López, F., Hutton, B., Núñez-Beltrán, A., Page, M. J., Ridao, M., Macías Saint-Gerons, D., Catalá, M. A., Tabarés-Seisdedos, R., & Moher, D. (2017) · PLOS ONE · doi:10.1371/journal.pone.0180355 · Cited by 396 · see citing works
GetReal in network meta-analysis: a review of the methodology
Efthimiou, O., Debray, T. P. A., van Valkenhoef, G., Trelle, S., Panayidou, K., Moons, K. G. M., Reitsma, J. B., Shang, A., Salanti, G., & on behalf of GetReal Methods Review Group (2016) · Research Synthesis Methods · doi:10.1002/jrsm.1195 · Cited by 401 · see citing works
Barbui, C., Purgato, M., Abdulmalik, J., Acarturk, C., Eaton, J., Gastaldon, C., Gureje, O., Hanlon, C., Jordans, M., Lund, C., et al. (2020) · The Lancet Psychiatry · doi:10.1016/s2215-0366(19)30511-5 · Cited by 349 · see citing works
Dietary sugar consumption and health: umbrella review
Huang, Y., Chen, Z., Chen, B., Li, J., Yuan, X., Li, J., Wang, W., Dai, T., Chen, H., Wang, Y., et al. (2023) · BMJ · doi:10.1136/bmj-2022-071609 · Cited by 348 · see citing works
Belbasis, L., Bellou, V., & Ioannidis, J. P. A. (2022) · BMJ Medicine · doi:10.1136/bmjmed-2021-000071 · Cited by 325 · see citing works
Self-citationKöhler, C. A., Evangelou, E., Stubbs, B., Solmi, M., Veronese, N., Belbasis, L., Bortolato, B., Melo, M. C. A., Coelho, C. A., Fernandes, B. S., et al. (2018) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2018.05.020 · Cited by 302 · see citing works
Self-citationSoysal, P., Hurst, C., Demurtas, J., Firth, J., Howden, R., Yang, L., Tully, M. A., Koyanagi, A., Ilie, P. C., López-Sánchez, G. F., et al. (2021) · Journal of Sport and Health Science · doi:10.1016/j.jshs.2020.06.009 · Cited by 283 · see citing works
Kim, J. H., Kim, J. Y., Lee, J., Jeong, G. H., Lee, E., Lee, S., Lee, K. H., Kronbichler, A., Stubbs, B., Solmi, M., et al. (2020) · The Lancet Psychiatry · doi:10.1016/s2215-0366(20)30312-6 · Cited by 258 · see citing works
Bougioukas, K. I., Liakos, A., Tsapas, A., Ntzani, E., & Haidich, A.-B. (2018) · Journal of Clinical Epidemiology · doi:10.1016/j.jclinepi.2017.10.002 · Cited by 251 · see citing works
Kim, J. Y., Son, M. J., Son, C. Y., Radua, J., Eisenhut, M., Gressier, F., Koyanagi, A., Carvalho, A. F., Stubbs, B., Solmi, M., et al. (2019) · The Lancet Psychiatry · doi:10.1016/s2215-0366(19)30181-6 · Cited by 271 · see citing works
van IJzendoorn, M. H., Bakermans‐Kranenburg, M. J., Coughlan, B., & Reijman, S. (2020) · Journal of Child Psychology and Psychiatry · doi:10.1111/jcpp.13147 · Cited by 262 · see citing works
Belbasis, L., Savvidou, M. D., Kanu, C., Evangelou, E., & Tzoulaki, I. (2016) · BMC Medicine · doi:10.1186/s12916-016-0692-5 · Cited by 237 · see citing works
Development of the summary of findings table for network meta-analysis
Yepes-Nuñez, J. J., Li, S.-A., Guyatt, G., Jack, S. M., Brozek, J. L., Beyene, J., Murad, M. H., Rochwerg, B., Mbuagbaw, L., Zhang, Y., et al. (2019) · Journal of Clinical Epidemiology · doi:10.1016/j.jclinepi.2019.04.018 · Cited by 218 · see citing works
Association of Antidepressant Use With Adverse Health Outcomes: A Systematic Umbrella Review
Dragioti, E., Solmi, M., Favaro, A., Fusar-Poli, P., Dazzan, P., Thompson, T., Stubbs, B., Firth, J., Fornaro, M., Tsartsalis, D., et al. (2019) · JAMA Psychiatry · doi:10.1001/jamapsychiatry.2019.2859 · Cited by 215 · see citing works
Evidence-based umbrella review of 162 peripheral biomarkers for major mental disorders
Carvalho, A. F., Solmi, M., Sanches, M., Machado, M. O., Stubbs, B., Ajnakina, O., Sherman, C., Sun, Y. R., Liu, C. S., Brunoni, A. R., et al. (2020) · Translational Psychiatry · doi:10.1038/s41398-020-0835-5 · Cited by 204 · see citing works
Lunny, C., Brennan, S. E., McDonald, S., & McKenzie, J. E. (2017) · Systematic Reviews · doi:10.1186/s13643-017-0617-1 · Cited by 184 · see citing works
Cooper, H., & Koenka, A. C. (2012) · American Psychologist · doi:10.1037/a0027119 · Cited by 196 · see citing works
Umbrella reviews: what they are and why we need them
Papatheodorou, S. (2019) · European Journal of Epidemiology · doi:10.1007/s10654-019-00505-6 · Cited by 201 · see citing works
Sample size and power considerations in network meta-analysis
Thorlund, K., & Mills, E. J. (2012) · Systematic Reviews · doi:10.1186/2046-4053-1-41 · Cited by 197 · see citing works
Zhang, X., Chen, X., Xu, Y., Yang, J., Du, L., Li, K., & Zhou, Y. (2021) · Nutrition & Metabolism · doi:10.1186/s12986-020-00527-y · Cited by 195 · see citing works
Dragioti, E., Tsartsalis, D., Mentis, M., Mantzoukas, S., & Gouva, M. (2022) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2022.104272 · Cited by 176 · see citing works
Stubbs, B., Rosenbaum, S., Vancampfort, D., Ward, P. B., & Schuch, F. B. (2016) · Journal of Affective Disorders · doi:10.1016/j.jad.2015.10.010 · Cited by 163 · see citing works
Lunny, C., Brennan, S. E., McDonald, S., & McKenzie, J. E. (2018) · Systematic Reviews · doi:10.1186/s13643-018-0784-8 · Cited by 139 · see citing works
Captieux, M., Pearce, G., Parke, H. L., Epiphaniou, E., Wild, S., Taylor, S. J. C., & Pinnock, H. (2018) · BMJ Open · doi:10.1136/bmjopen-2018-024262 · Cited by 132 · see citing works
Barbui, C., Purgato, M., Abdulmalik, J., Caldas-de-Almeida, J. M., Eaton, J., Gureje, O., Hanlon, C., Nosè, M., Ostuzzi, G., Saraceno, B., et al. (2021) · The British Journal of Psychiatry · doi:10.1192/bjp.2020.144 · Cited by 148 · see citing works
Ballard, M., & Montgomery, P. (2017) · Research Synthesis Methods · doi:10.1002/jrsm.1229 · Cited by 136 · see citing works
Exercise for Adults with Fibromyalgia: An Umbrella Systematic Review with Synthesis of Best Evidence
Bidonde, J., Busch, A., Bath, B., & Milosavljevic, S. (2014) · Current Rheumatology Reviews · doi:10.2174/1573403x10666140914155304 · Cited by 132 · see citing works
Balki, E., Hayes, N., & Holland, C. (2022) · JMIR Aging · doi:10.2196/40125 · Cited by 132 · see citing works
Pre‐eclampsia and long‐term health outcomes for mother and infant: an umbrella review
Pittara, T., Vyrides, A., Lamnisos, D., & Giannakou, K. (2021) · BJOG: An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.16683 · Cited by 125 · see citing works
Dragioti, E., Radua, J., Solmi, M., Gosling, C. J., Oliver, D., Lascialfari, F., Ahmed, M., Cortese, S., Estradé, A., Arrondo, G., et al. (2023) · World Psychiatry · doi:10.1002/wps.21068 · Cited by 130 · see citing works
Solmi, M., Veronese, N., Correll, C. U., Favaro, A., Santonastaso, P., Caregaro, L., Vancampfort, D., Luchini, C., De Hert, M., & Stubbs, B. (2016) · Acta Psychiatrica Scandinavica · doi:10.1111/acps.12556 · Cited by 124 · see citing works
Catalá-López, F., Macías Saint-Gerons, D., González-Bermejo, D., Rosano, G. M., Davis, B. R., Ridao, M., Zaragoza, A., Montero-Corominas, D., Tobías, A., de la Fuente-Honrubia, C., et al. (2016) · PLOS Medicine · doi:10.1371/journal.pmed.1001971 · Cited by 109 · see citing works
Hutton, B., Salanti, G., Chaimani, A., Caldwell, D. M., Schmid, C., Thorlund, K., Mills, E., Catalá-López, F., Turner, L., Altman, D. G., et al. (2014) · PLoS ONE · doi:10.1371/journal.pone.0092508 · Cited by 105 · see citing works
What we already know about the effects of exercise in patients with fibromyalgia: An umbrella review
Andrade, A., Dominski, F. H., & Sieczkowska, S. M. (2020) · Seminars in Arthritis and Rheumatism · doi:10.1016/j.semarthrit.2020.02.003 · Cited by 95 · see citing works
Amerio, A., Stubbs, B., Odone, A., Tonna, M., Marchesi, C., & Ghaemi, S. N. (2015) · Journal of Affective Disorders · doi:10.1016/j.jad.2015.06.005 · Cited by 92 · see citing works
Meta-analytic insights into evolutionary ecology: an introduction and synthesis
Nakagawa, S., & Poulin, R. (2012) · Evolutionary Ecology · doi:10.1007/s10682-012-9593-z · Cited by 77 · see citing works
Impact of organized activities on mental health in children and adolescents: An umbrella review
Boelens, M., Smit, M. S., Raat, H., Bramer, W. M., & Jansen, W. (2022) · Preventive Medicine Reports · doi:10.1016/j.pmedr.2021.101687 · Cited by 65 · see citing works
“Other types of reviews (i.e. narrative or rapid reviews) were excluded as we aim to summarize studies with the highest level of evidence (Ioannidis, 2009).”
BackgroundEffectiveness of multidisciplinary programmes for clinical pain conditions: an umbrella review.
Dragioti, E., Evangelou, E., Larsson, B., & Gerdle, B. (2018) · Journal of Rehabilitation Medicine · doi:10.2340/16501977-2377 · Cited by 53 · see citing works
Stuart, B., Maund, E., Wilcox, C., Sridharan, K., Sivaramakrishnan, G., Regas, C., Newell, D., Soulsby, I., Tang, K. F., Finlay, A. Y., et al. (2021) · British Journal of Dermatology · doi:10.1111/bjd.20080 · Cited by 48 · see citing works
Solmi, M., Correll, C. U., Carvalho, A. F., & Ioannidis, J. P. A. (2018) · Epidemiology and Psychiatric Sciences · doi:10.1017/s204579601800032x · Cited by 44 · see citing works
Self-citationBaldini, V., Stefano, R. D., Rindi, L. V., Ahmed, A. O., Koola, M. M., Solmi, M., Papola, D., De Ronchi, D., Barbui, C., & Ostuzzi, G. (2023) · Psychiatry Research · doi:10.1016/j.psychres.2023.115488 · Cited by 46 · see citing works
Diagnostic biomarkers for obsessive-compulsive disorder: A reasonable quest or ignis fatuus?
Fullana, M. A., Abramovitch, A., Via, E., López-Sola, C., Goldberg, X., Reina, N., Fortea, L., Solanes, A., Buckley, M. J., Ramella-Cravaro, V., et al. (2020) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2020.08.008 · Cited by 44 · see citing works
Baldini, V., Gottardi, C., Di Stefano, R., Rindi, L. V., Pazzocco, G., Varallo, G., Purgato, M., De Ronchi, D., Barbui, C., & Ostuzzi, G. (2025) · European Psychiatry · doi:10.1192/j.eurpsy.2025.2452 · Cited by 41 · see citing works
“Ourfindings align with prior meta-analytic evidence in the general population, which has consistently reported an increased risk of suicidal behaviors among individuals exposed to ACEs [26].”
Meta-analysis of meta-analyses in plant evolutionary ecology
Castellanos, M. C., & Verdú, M. (2012) · Evolutionary Ecology · doi:10.1007/s10682-012-9562-6 · Cited by 19 · see citing works
Solanes, A., Albajes-Eizagirre, A., Fullana, M. A., Fortea, L., Fusar-Poli, P., Torrent, C., Solé, B., Bonnín, C. M., Shin, J. I., Vieta, E., et al. (2021) · Revista de Psiquiatría y Salud Mental · doi:10.1016/j.rpsm.2020.08.002 · Cited by 19 · see citing works
- Authors
- Ioannidis, J. P. A.
- Affiliations
- University of Ioannina (GR)
- Corresponding author
- Ioannidis, J. P.A.
- ORCID
- Ioannidis, J. P.A.
- Venue
- Canadian Medical Association Journal
- Publisher
- CMA Impact Inc.
- Published
- 2009-08-04
- Volume
- 181
- Issue
- 8
- Pages
- 488-493
- ISSN
- 0820-3946 (ISSN-L)
- 1488-2329
- PMC
- PMC2761440
- OpenAlex
- W2133413753
- Cited by
- 716
- References
- 55
- Citations by year
- 2026: 75 · 2025: 83 · 2024: 75 · 2023: 65 · 2022: 69 · 2021: 54 · 2020: 51 · 2019: 35 · 2018: 42 · 2017: 28 · 2016: 40 · 2015: 20 · 2014: 20 · 2013: 16 · 2012: 21
- FWCI
- 1.06
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Canadian Medical Association Journal (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Clinical practice guidelines implementation
- Social Sciences › Sociology and Political Science › Delphi Technique in Research
- Keywords
- umbrella review, treatment networks, evidence integration
- MeSH terms
- Clinical Trials as Topic, Humans, Meta-Analysis as Topic, Practice Guidelines as Topic, Evidence-Based Medicine
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