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

Year Number of Results
1998 1
1999 3
2000 2
2001 16
2002 3
2003 5
2004 5
2005 5
2006 5
2007 10
2008 8
2009 2
2010 12
2011 13
2012 10
2013 10
2014 18
2015 18
2016 18
2017 25
2018 32
2019 29
2020 42
2021 31
2022 35
2023 1
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306 results
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Page 1
The Placebo and Nocebo effect on sports performance: A systematic review.
Hurst P, Schipof-Godart L, Szabo A, Raglin J, Hettinga F, Roelands B, Lane A, Foad A, Coleman D, Beedie C. Hurst P, et al. Eur J Sport Sci. 2020 Apr;20(3):279-292. doi: 10.1080/17461391.2019.1655098. Epub 2019 Aug 20. Eur J Sport Sci. 2020. PMID: 31414966
Small to moderate placebo effects were found for both placebo (d = 0.36) and nocebo (d = 0.37) effects and when separated by nutritional (d = 0.35) and mechanical (d = 0.47) ergogenic aids. The pooled effect size revealed a small to moderate effect size across all s …
Small to moderate placebo effects were found for both placebo (d = 0.36) and nocebo (d = 0.37) effects and when separated by nutritional (d …
Potential safety, benefits, and influence of the placebo effect in microdosing psychedelic drugs: A systematic review.
Ona G, Bouso JC. Ona G, et al. Neurosci Biobehav Rev. 2020 Dec;119:194-203. doi: 10.1016/j.neubiorev.2020.09.035. Epub 2020 Oct 5. Neurosci Biobehav Rev. 2020. PMID: 33031815 Review.
In this systematic review, we searched the available evidence from human studies, focusing our results in terms of three main axes: efficacy, safety, and the influence of the placebo effect in microdosing practices. While the available evidence has some strengths (e.g. lar …
In this systematic review, we searched the available evidence from human studies, focusing our results in terms of three main axes: efficacy …
Placebo effect of acupuncture on insomnia: a systematic review and meta-analysis.
Liu C, Xi H, Wu W, Wang X, Qin S, Zhao Y, Zheng S, Wan Q, Xu L. Liu C, et al. Ann Palliat Med. 2020 Jan;9(1):19-29. doi: 10.21037/apm.2019.11.15. Ann Palliat Med. 2020. PMID: 32005059 Free article.
As the underlying mechanism is yet unclear, its efficacy is often considered as placebo effect. To clarify whether acupuncture treatment of insomnia is only due to its placebo effect, a systematic review and a meta-analysis were designed based on the comparison betw …
As the underlying mechanism is yet unclear, its efficacy is often considered as placebo effect. To clarify whether acupuncture treatm …
Acamprosate for alcohol dependence.
Rösner S, Hackl-Herrwerth A, Leucht S, Lehert P, Vecchi S, Soyka M. Rösner S, et al. Cochrane Database Syst Rev. 2010 Sep 8;(9):CD004332. doi: 10.1002/14651858.CD004332.pub2. Cochrane Database Syst Rev. 2010. PMID: 20824837 Free article. Review.
Compared to placebo, acamprosate was shown to significantly reduce the risk of any drinking RR 0.86 (95% CI 0.81 to 0.91); NNT 9.09 (95% CI 6.66 to 14.28) and to significantly increase the cumulative abstinence duration MD 10.94 (95% CI 5.08 to 16.81), while secondary outcomes (g …
Compared to placebo, acamprosate was shown to significantly reduce the risk of any drinking RR 0.86 (95% CI 0.81 to 0.91); NNT 9.09 (95% CI …
Antipsychotics for treatment of delirium in hospitalised non-ICU patients.
Burry L, Mehta S, Perreault MM, Luxenberg JS, Siddiqi N, Hutton B, Fergusson DA, Bell C, Rose L. Burry L, et al. Cochrane Database Syst Rev. 2018 Jun 18;6(6):CD005594. doi: 10.1002/14651858.CD005594.pub3. Cochrane Database Syst Rev. 2018. PMID: 29920656 Free PMC article. Review.
We used risk ratios (RR) with 95% confidence intervals (CI) as a measure of treatment effect for dichotomous outcomes, and between-group standardised mean differences (SMD) with 95% CI for continuous outcomes. ...
We used risk ratios (RR) with 95% confidence intervals (CI) as a measure of treatment effect for dichotomous outcomes, and between-gr …
A review of the ketogenic diet for endurance athletes: performance enhancer or placebo effect?
Bailey CP, Hennessy E. Bailey CP, et al. J Int Soc Sports Nutr. 2020 Jun 22;17(1):33. doi: 10.1186/s12970-020-00362-9. J Int Soc Sports Nutr. 2020. PMID: 32571422 Free PMC article.
This paper systematically reviews the evidence regarding the effect of the endurance athlete's ketogenic diet (EAKD) on maximal oxygen consumption (VO(2) max) and secondary performance outcomes. ...When compared to a high carbohydrate diet, there are mixed findings for the …
This paper systematically reviews the evidence regarding the effect of the endurance athlete's ketogenic diet (EAKD) on maximal oxyge …
Systematic review of the Hawthorne effect: new concepts are needed to study research participation effects.
McCambridge J, Witton J, Elbourne DR. McCambridge J, et al. J Clin Epidemiol. 2014 Mar;67(3):267-77. doi: 10.1016/j.jclinepi.2013.08.015. Epub 2013 Nov 22. J Clin Epidemiol. 2014. PMID: 24275499 Free PMC article. Review.
OBJECTIVES: This study aims to (1) elucidate whether the Hawthorne effect exists, (2) explore under what conditions, and (3) estimate the size of any such effect. STUDY DESIGN AND SETTING: This systematic review summarizes and evaluates the strength of availa …
OBJECTIVES: This study aims to (1) elucidate whether the Hawthorne effect exists, (2) explore under what conditions, and (3) e …
Ferrous sulfate supplementation causes significant gastrointestinal side-effects in adults: a systematic review and meta-analysis.
Tolkien Z, Stecher L, Mander AP, Pereira DI, Powell JJ. Tolkien Z, et al. PLoS One. 2015 Feb 20;10(2):e0117383. doi: 10.1371/journal.pone.0117383. eCollection 2015. PLoS One. 2015. PMID: 25700159 Free PMC article. Review.
Ferrous sulfate supplementation significantly increased risk of GI side-effects versus placebo with an odds ratio (OR) of 2.32 [95% CI 1.74-3.08, p<0.0001, I2 = 53.6%] and versus i.v. iron with an OR of 3.05 [95% CI 2.07-4.48, p<0.0001, I2 = 41.6%]. Subgroup analysis in IBD …
Ferrous sulfate supplementation significantly increased risk of GI side-effects versus placebo with an odds ratio (OR) of 2.32 [95% CI 1.74- …
Antihypertensive drug therapy for mild to moderate hypertension during pregnancy.
Abalos E, Duley L, Steyn DW, Gialdini C. Abalos E, et al. Cochrane Database Syst Rev. 2018 Oct 1;10(10):CD002252. doi: 10.1002/14651858.CD002252.pub4. Cochrane Database Syst Rev. 2018. PMID: 30277556 Free PMC article.
SECONDARY OUTCOMES: we are uncertain of the effect of antihypertensive drug(s) on the risk of maternal death, severe pre-eclampsia, or eclampsia, orimpaired long-term growth and development of the baby in infancy and childhood, because the certainty of this evidence is ver …
SECONDARY OUTCOMES: we are uncertain of the effect of antihypertensive drug(s) on the risk of maternal death, severe pre-eclampsia, o …
306 results