Does different information disclosure on placebo control affect blinding and trial outcomes? A case study of participant information leaflets of randomized placebo-controlled trials of acupuncture

Boutron I(2013)World medical association declaration of Helsinki: ethical principles for medical research involving human subjects JAMA 310 2191-2194

Guittet L(2007)Reporting methods of blinding in randomized trials assessing nonpharmacological treatments PLoS Med 4 e61-385

Estellat C(2004)How informed is consent in sham-controlled trials of acupuncture? J Altern Complement Med 10 379-44

Moher D(2007)Acupuncture trials and informed consent J Med Ethics 33 43-243

Hróbjartsson A(2011)The placebo phenomenon and medical ethics: rethinking the relationship between informed consent and risk–benefit assessment Theor Med Bioeth 32 229-1283

Ravaud P(2010)Getting the pain you expect: mechanisms of placebo, nocebo and reappraisal effects in humans Nat Med 16 1277-553

Linde K(2015)Role of explicit verbal information in conditioned analgesia Eur J Pain 19 546-336

Dincer F(2016)Nocebo in headache Curr Opin Neurol 29 331-352

Miller FG(2012)Informed consent and placebo effects: a content analysis of information leaflets to identify what clinical trial participants are told about placebos PLoS One 7 e39661-1288

Kaptchuk TJ(2013)Blinding measured: a systematic review of randomized controlled trials of acupuncture Evid Based Complement Altern Med 2013 708251-156

Boutron I(2013)World medical association declaration of Helsinki: ethical principles for medical research involving human subjects JAMA 310 2191-2194

Guittet L(2007)Reporting methods of blinding in randomized trials assessing nonpharmacological treatments PLoS Med 4 e61-385

Estellat C(2004)How informed is consent in sham-controlled trials of acupuncture? J Altern Complement Med 10 379-44

Moher D(2007)Acupuncture trials and informed consent J Med Ethics 33 43-243

Hróbjartsson A(2011)The placebo phenomenon and medical ethics: rethinking the relationship between informed consent and risk–benefit assessment Theor Med Bioeth 32 229-1283

Ravaud P(2010)Getting the pain you expect: mechanisms of placebo, nocebo and reappraisal effects in humans Nat Med 16 1277-553

Linde K(2015)Role of explicit verbal information in conditioned analgesia Eur J Pain 19 546-336

Dincer F(2016)Nocebo in headache Curr Opin Neurol 29 331-352

Miller FG(2012)Informed consent and placebo effects: a content analysis of information leaflets to identify what clinical trial participants are told about placebos PLoS One 7 e39661-1288

Kaptchuk TJ(2013)Blinding measured: a systematic review of randomized controlled trials of acupuncture Evid Based Complement Altern Med 2013 708251-156