Table 2.

Sham Controlled Acupuncture Trials

Trial Name	Pain Condition	Average Length of Treatment	Time Points after End of Treatment	Included in meta-analysis
Carlsson 2001[5]	Low Back Pain	8 weeks	Weeks 4, 12 and 26	Yes
Foster 2007[10]	Osteoarthritis	3 weeks	Weeks 3, 23 and 49	Yes
Guerra 2004[14]	Shoulder	8 weeks	Weeks 5 and 18	Yes
Irnich 2001[16]	Neck	3 weeks	Weeks 1 and 10	Yes
Kennedy 2008[18]	Low Back Pain	5 weeks	End of treatment and week 7	Yes
Kerr 2003[19]	Low Back Pain	6 weeks	None	No
White 2004[38]	Neck	4 weeks	End of treatment and weeks 1 through 8	Yes
Linde 2005[22]	Migraine	8 weeks	End of treatment and weeks 4 and 16	Yes
Melchart 2005[25]	Headache	8 weeks	End of treatment and weeks 4 and 16	Yes
Berman 2004[3]	Osteoarthritis	26 weeks	End of treatment	No
Kleinhenz 1999[20]	Shoulder	4 weeks	End of treatment	No
Diener 2006[8]	Migraine	6 weeks	End of treatment and weeks 7 and 20	Yes
Scharf 2006[27]	Osteoarthritis	6 weeks	Weeks 7 and 20	Yes
Haake 2007[15]	Low Back Pain	6 weeks	End of treatment and weeks 7 and 20	Yes
Endres 2007[9]	Headache	6 weeks	End of treatment and weeks 7 and 20	Yes
Vas 2004[32]	Osteoarthritis	12 weeks	Week 1	No
Vas 2006[34]	Neck	3 weeks	Weeks 1 and 25	Yes
Vas 2008[33]	Shoulder	3 weeks	Weeks 1, 10, 23 and 49	Yes
Witt 2005[40]	Osteoarthritis	8 weeks	End of treatment and weeks 18 and 44	Yes
Brinkhaus 2006[4]	Low Back Pain	8 weeks	End of treatment and weeks 18 and 44	Yes