Table 4.

Articles' levels of evidence using Oxford's level of evidence (n (references)).

Literatures	Level
	I	II	III	IV	V
Acupuncture for pain relief during delivery (n = 23)	0	20  [3–22]	1  [23]	2  [24, 25]	0
Acupuncture for the process of labor (n = 11)	0	9  [26–34]	0	2  [35, 36]	0
Acupuncture for disorder of postpartum period (n = 31)	0	9  [37–45]	2  [46, 47]	20 [48–67]	0
Acupuncture for abortion (n = 3)	0	3  [68–70]	0	0	0