Authors Sample size Sample size Age Age Age Intervention Intervention Intervention Controls Outcomes
T C T T C Stage Intervention measures Auricular points
Hu 2012 200 200 19~32 19~32 19~32 Active phase-end of labor A TF2, TF4, CO18, AH6a C e, h, j
Song 2002 30 30 20~36 20~36 20~30 All stages of labor A TF2, TF4, AH8 C d, e, f, h, i
Tian 2006 50 50 22~31 22~31 22~31 All stages of labor A TF2, CO18, AT4 C d, e, f, h,
Liu 2017 92 92 26.51±3.90 26.51±3.90 26.51±3.90 All stages of labor A AT4, CO18, TF2 C d, e, f, h,
Hu 2011 110 110 21~40 21~40 21~42 All stages of labor A TF2, CO18, AT4 C h, i, j, k
Ye 2016 50 50 18.8±4.5 18.5±4.6 18.5±4.6 All stages of labor A CO12, TF4, CO4, CO13 C e ,i, k, j, k
Gao 2009 50 50 20~35 20~35 20~35 All stages of labor A TF2, TF4, AH6a, AH8 C d, e, f
Jiang 1997 30 30 26±3.58 27±3.65 27±3.65 All stages of labor B TF2, TF4, CO14, AT4 C j, k