Study	Reason for exclusion
Bi 2011	The intervention was warm acupuncture combined with foot massage and pelvic floor muscle training
Chen 2003	Acupuncture versus another type of acupuncture
Chen 2010	Acupuncture combined with treatment A versus acupuncture combined with treatment B
Gao 2011	The intervention was acupuncture combined with another treatment
He 2011	Not a randomised controlled trial
Jung 2008	Some important data were absent
Le 2008	Acupuncture combined with treatment B versus treatment B combined with C
Ni 2008	Acupuncture plus herb, moxibustion and PFMT versus drug plus PFMT
Shang 2010	Acupuncture compared with another kind of acupuncture
Sun 2011	The intervention was acupuncture combined with another treatment
Tang 2009	Acupuncture plus moxibustion and PFMT versus PFMT
Wang 2006	Acupuncture compared with another kind of acupuncture
Xiong 2005	Acupuncture plus PFMT versus herb
Yang 2004	Acupuncture compared with another type of acupuncture
Yang 2008	Not a randomised controlled trial
Yang 2010	Acupuncture compared with another type of acupuncture
Yang B 2010	Not a randomised controlled trial
Yang T 2004	Acupuncture compared with another type of acupuncture
Yue 2008	Acupuncture compared with another type of acupuncture
Zheng 1992	Not a randomised controlled trial. Acupuncture compared with another type of acupuncture

PFMT: pelvic floor muscle training.