Is Placebo Acupuncture What It Is Intended to Be?

Table 3

Results, treatment of knee osteoarthritis pain.

Intervention: Author, year (ref.); number of included subjects (n)	Proportion patients (in%) reporting decreased knee osteoarthritis pain and increased function [13–15]
Acupuncture
Witt, 2005 [14]; n = 294	52
Scharf, 2006 [15]; n = 1007	53
Witt, 2006 [16]; n = 712	35
Minimal acupuncture
Witt, 2005 [14]; n = 294	28
Scharf, 2006 [15]; n = 1007	51
Standard care
Scharf, 2006 [15]; n = 1007	29
Routine care
Witt, 2006 [16]; n = 712	7
Waiting list
Witt, 2005 [14]; n = 294	3