Table 4.

Characteristics of included RCTs of acupuncture for luteinized unruptured follicle syndrome.

Included studies	Sample size	Age	Treatment group interventions	Control group interventions	Course of treatment	Outcome
(41)	T: 36 C: 36	T:/ C:/	Acupuncture + HCG	HCG	4 weeks	Pregnancy rate
(40)	T: 30 C: 30	T: 32.51 ± 2.75 C: 31.79 ± 3.62	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(38)	T: 36 C: 36	T: 23–38 C: 22–38	Acupuncture + HCG	HCG	3 menstrual cycles	Pregnancy rate
(39)	T: 43 C: 41	T:/ C:/	Acupuncture + HCG + letrozole	HCG + letrozole	3 menstrual cycles	Pregnancy rate
(35)	T: 30 C: 30	T: 29.30 ± 3.67 C: 28.37 ± 3.79	Acupuncture	HCG	No report	Pregnancy rate
(37)	T: 33 C: 33	T: 23–40 C: 23–40	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(36)	T: 40 C: 40	T: 25.8 ± 2.56 C: 24.8 ± 2.16	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(34)	T: 30 C: 30	T: 28.27 ± 3.84 C: 28.85 ± 2.13	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(33)	T: 32 C: 32	T: 29.59 ± 3.44 C: 31.22 ± 12.79	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(32)	T: 30 C: 30	T: 31.87 ± 3.58 C: 31.77 ± 3.63	Acupuncture + HCG	HCG	1 month	Pregnancy rate
(31)	T: 30 C: 30	T:/ C:/	Acupuncture	HCG	No report	Pregnancy rate
(29)	T: 33 C: 32	T: 29.39 ± 4.39 C: 29.22 ± 4.15	Acupuncture	HCG	3 months	Pregnancy rate
(30)	T: 30 C: 26	T: 30.27 ± 3.44 C: 30.07 ± 2.89	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(28)	T: 25 C: 25	T: 30.48 ± 4.03 C: 29.71 ± 3.05	Acupuncture	HCG	3 menstrual cycles	Pregnancy rate
(27)	T: 25 C: 25	T: 30.88 ± 3.37 C: 31.60 ± 4.56	Acupuncture	No treatment	No report	Pregnancy rate
(26)	T: 40 C: 40	T: 29.18 ± 2.63 C: 29.00 ± 2.71	Acupuncture + HCG + endovascular therapy	HCG	3 menstrual cycles	Pregnancy rate
(25)	T: 30 C: 30	T:/ C:/	Acupuncture + HCG	HCG	3 menstrual cycles	Pregnancy rate

T, treatment group; C, the control group; HCG, human chorionic gonadotropin.