Study	Reason for exclusion
Ailioaie 1999	No inactive control group
Aillioaie 2000	Not acupuncture
Berger 1975	Non‐randomised controlled trial.
Choudhury 1989	Before and after study of acupuncture in extrinsic asthma
Chow 1983	RCT on induced asthma attacks (not covered by this review)
Eber 2001	RCT on exercise‐induced asthma (not covered by this review)
Fung 1986	RCT on induced asthma attacks (not covered by this review)
Gruber 2002	RCT on induced asthma attacks (not covered by this review)
Jobst 1986	RCT of acupuncture in COPD.
Karst 2002	RCT of acupuncture in healthy participants
Luu 1985	RCT of thoracic trigger points with evaluation of lung function 2hs after treatment
Maa 1997	RCT of acupressure in COPD.
Mehl‐Madrona 2007	No sham control group
Morton 1993	RCT on induced asthma attacks (not covered by this review)
Sovijarvi 1977	Not randomized, short‐term observation
Stockert 2007	Addition of therapy to acupuncture not given to control group
Takishima 1982	Not randomized, short term observation
Tandon 1989	RCT on induced asthma (not covered by this review)
Tashkin 1977	RCT on induced asthma attacks (not covered by this review)
Virsik 1980	Not randomized, short time observation
Yu 1976	Randomization not reported, treatment on an acute attack
Zhang 2006	Methods not sufficient to determine quality