Authors Sample size Sample size Age Age Intervention Intervention Intervention Controls Outcomes
T C T C Stage Intervention measures Auricular points
He 2020 50 50 33.5±2.4 36.2±8.5 Latent phase A TF2, AH6a, TF5, AH9, TF4 C a, b, c, d, g
Li 2017 40 40 30.57±2.14 31.04±4.62 Latent phase A TF4, TF2, TF5, AH6a, AH9 C c, g
Wei 2016 100 100 27.0±2.6 26.1±2.9 Latent phase A AH6a, TF2, TF5, TF4, AH9 C a, b, c, d, g
Lu 2016 50 50 26.32±3.35 27.22±3.09 Latent phase A AH9, TF4, TF5, TF2, AH6a C a, b, d
Ding 2019 100 100 27.5±3.1 27.5±3.1 Latent phase A AH9, TF4, TF5, TF2, AH6a C d
Liu2016 100 100 20-35 20-35 First stage of labor A CO18, TF2, AH6a, TF4, AT4 C d
Chen 2021 100 100 28.20±3.38 28.41±3.40 Latent phase A TF2, TF4, AT4, CO18, AH6a, AH9 C a, b, c, d, g
Fu 2018 102 100 31.30±8.70 31.30±8.70 Latent phase A TF2, CO10, TF4, TG2p, CO18, AH6a, AT4, AT3 C a
Zhao 2020 34 34 31.20±8.6 31.20±8.6 Latent phase A TF2, CO18, AT4, AH6a C a