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Sometimes the ritual of surgery can be as effective as an actual procedure. HRAUN/Getty Images Usually, when we think of a placebo it s a harmless sugar pill, taken in place of an experimental drug. This is common practice, so that medical researchers can compare the results between two groups of volunteers and thus determine if the new treatment is effective. Less common are placebo or sham surgeries. These involve sedation, scalpels and stitches, but just not the actual intervention. Even though they are relatively rare, they are sometimes used to determine in studies how effective a real surgery is.

Eteläuomen läiUnited statesLewis flintUniversity of helsinkiUniversity of oxfordFinnish centre for evidenceAmerican college of surgeonsHelsinki university hospitalSimo taimelaFinnish centreEvidence based orthopedicsAmerican collegeSelected readingsஒன்றுபட்டது மாநிலங்களில்லெவிஸ் பிளின்ட்பல்கலைக்கழகம் ஆஃப் ஹெல்சின்கி