Linked from

The 15 pages that link to Placebo-controlled trial, each with the reason it gives.

• PlaceboBroader topic: This design tests whether an intervention produces benefits beyond those seen with placebo.

• Psychedelic therapyRelated: Blinding is difficult when psychedelic effects are noticeable, complicating efficacy comparisons.

• Control groupBroader topic: This specific design uses a placebo as the control condition.

• Psychedelic experienceRelated: Expectations and unmistakable drug effects complicate placebo control in psychedelic studies.

• LevetiracetamRelated: Trials against placebo established levetiracetam's ability to reduce seizure frequency as add-on therapy.

• ModafinilRelated: Clinical trials use this design to test whether modafinil reduces sleepiness beyond placebo effects.

• Mood stabilizerRelated: Controlled trials help distinguish a drug's effects from symptom changes that would occur without it.

• Positive thinkingRelated: It helps distinguish effects of a positive-thinking practice from expectancy and other influences.

• VareniclineRelated: Varenicline’s efficacy and safety have been assessed in placebo-controlled cessation trials.

• Open-label placeboNarrower topic: Open-label placebo is one form of placebo intervention, but disclosure changes how the control is delivered.

• Hypericum perforatumRelated: Clinical trials of St John’s wort use this design to distinguish treatment effects from expectation.

• ResveratrolRelated: Such trials help separate resveratrol's effects from expectation, background changes, and study bias.

• Blinded experimentCompared with: A placebo comparison can support participant masking, unlike many active-control comparisons.

• Louise HayCompared with: Such trials provide a standard for testing health claims that affirmation practices do not establish on their own.

• ThetaHealingRelated: This design can test whether reported benefits exceed expectation and treatment-context effects.