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The magnitude and temporal changes of response in the placebo arm of surgical randomized controlled trials: a systematic review and meta-analysis.

Wartolowska KA, Feakins BG, Collins GS, Cook J, Judge A, Rombach I, Dean BJ, Smith JA, Carr AJ.

Trials. 2016 Dec 12;17(1):589. Review.


Identifying placebo responders and predictors of response in osteoarthritis: a protocol for individual patient data meta-analysis.

Fu Y, Persson MS, Bhattacharya A, Goh SL, Stocks J, van Middelkoop M, Bierma-Zeinstra SM, Walsh D, Doherty M, Zhang W.

Syst Rev. 2016 Oct 28;5(1):183.


Acupuncture for musculoskeletal pain: A meta-analysis and meta-regression of sham-controlled randomized clinical trials.

Yuan QL, Wang P, Liu L, Sun F, Cai YS, Wu WT, Ye ML, Ma JT, Xu BB, Zhang YG.

Sci Rep. 2016 Jul 29;6:30675. doi: 10.1038/srep30675.


Sensitivity to Excluding Treatments in Network Meta-analysis.

Lin L, Chu H, Hodges JS.

Epidemiology. 2016 Jul;27(4):562-9. doi: 10.1097/EDE.0000000000000482.


Validation of Placebo in a Manual Therapy Randomized Controlled Trial.

Chaibi A, Šaltytė Benth J, Bjørn Russell M.

Sci Rep. 2015 Jul 6;5:11774. doi: 10.1038/srep11774.


Prediction of placebo responses: a systematic review of the literature.

Horing B, Weimer K, Muth ER, Enck P.

Front Psychol. 2014 Oct 1;5:1079. doi: 10.3389/fpsyg.2014.01079. Review.


Bias due to lack of patient blinding in clinical trials. A systematic review of trials randomizing patients to blind and nonblind sub-studies.

Hróbjartsson A, Emanuelsson F, Skou Thomsen AS, Hilden J, Brorson S.

Int J Epidemiol. 2014 Aug;43(4):1272-83. doi: 10.1093/ije/dyu115. Review.


Are treatments more effective than placebos? A systematic review and meta-analysis.

Howick J, Friedemann C, Tsakok M, Watson R, Tsakok T, Thomas J, Perera R, Fleming S, Heneghan C.

PLoS One. 2013 May 15;8(5):e62599. doi: 10.1371/journal.pone.0062599. Review. Erratum in: PLoS One. 2016;11(1):e0147354.


Three-armed trials including placebo and no-treatment groups may be subject to publication bias: systematic review.

Koog YH, We SR, Min BI.

PLoS One. 2011;6(5):e20679. doi: 10.1371/journal.pone.0020679. Review.


Placebo effect studies are susceptible to response bias and to other types of biases.

Hróbjartsson A, Kaptchuk TJ, Miller FG.

J Clin Epidemiol. 2011 Nov;64(11):1223-9. doi: 10.1016/j.jclinepi.2011.01.008.


Systematic review of clinical trials of cervical manipulation: control group procedures and pain outcomes.

Vernon H, Puhl A, Reinhart C.

Chiropr Man Therap. 2011 Jan 11;19(1):3. doi: 10.1186/2045-709X-19-3.


Why do we love medicines so much? An evolutionary perspective on the human love of pills, potions and placebo.

Sullivan R, Behncke I, Purushotham A.

EMBO Rep. 2010 Aug;11(8):572-8. doi: 10.1038/embor.2010.108. No abstract available.


Challenges and recommendations for placebo controls in randomized trials in physical and rehabilitation medicine: a report of the international placebo symposium working group.

Fregni F, Imamura M, Chien HF, Lew HL, Boggio P, Kaptchuk TJ, Riberto M, Hsing WT, Battistella LR, Furlan A; International placebo symposium working group..

Am J Phys Med Rehabil. 2010 Feb;89(2):160-72. doi: 10.1097/PHM.0b013e3181bc0bbd.


The placebo effect: illness and interpersonal healing.

Miller FG, Colloca L, Kaptchuk TJ.

Perspect Biol Med. 2009 Autumn;52(4):518-39. doi: 10.1353/pbm.0.0115. Review.


Placebo response of non-pharmacological and pharmacological trials in major depression: a systematic review and meta-analysis.

Brunoni AR, Lopes M, Kaptchuk TJ, Fregni F.

PLoS One. 2009;4(3):e4824. doi: 10.1371/journal.pone.0004824. Review.


Effectiveness of placebo therapy for maintaining masking in a clinical trial of vergence/accommodative therapy.

Kulp M, Mitchell GL, Borsting E, Scheiman M, Cotter S, Rouse M, Tamkins S, Mohney BG, Toole A, Reuter K; Convergence Insufficiency Treatment Trial Study Group..

Invest Ophthalmol Vis Sci. 2009 Jun;50(6):2560-6. doi: 10.1167/iovs.08-2693.


Spontaneous improvement in randomised clinical trials: meta-analysis of three-armed trials comparing no treatment, placebo and active intervention.

Krogsbøll LT, Hróbjartsson A, Gøtzsche PC.

BMC Med Res Methodol. 2009 Jan 5;9:1. doi: 10.1186/1471-2288-9-1.


Components of placebo effect: randomised controlled trial in patients with irritable bowel syndrome.

Kaptchuk TJ, Kelley JM, Conboy LA, Davis RB, Kerr CE, Jacobson EE, Kirsch I, Schyner RN, Nam BH, Nguyen LT, Park M, Rivers AL, McManus C, Kokkotou E, Drossman DA, Goldman P, Lembo AJ.

BMJ. 2008 May 3;336(7651):999-1003. doi: 10.1136/bmj.39524.439618.25.

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