Although almost everyone controls for placebo, almost no one evaluates them, yet more placebos have been administered and confirmed than for any experimental drug. Medicinal efficacy are exclusive effects, if any. Kirsh and Sapirstein, Ph. D's at Univ. The same for homoeopathic medicines, which to date have not achieved any proven success.
Any statistical significance is negated by Bayesian analysis to standard arbitrary P-value results.
The body's internal energetic systems may be accessed by the conscious mind through the use of several techniques that do not involve the addition of any external energy into the body . Such an approach would empower and ethically serve both patient and practitioner, yet most homoeo-paths apparently feel intimidated. This means evaluating instead of controlling it. Deliberate use of the placebo response will maximise patient satisfaction and treatment efficacy. If the placebo effect could be patented and bottled, it would be worth a fortune.